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Welcome back, ladies and gentlemen, welcome to new lecture about JavaScript conditionals.

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Now, this is a very important lecture in make sure that you understand all of these conditions here.

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If you don't just re watch the lecture, because this is the fundamental part of JavaScript.

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So we're going to start with if statements, then we're going to go to else.

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Then we're going to check what else means switch statements, ternary operator and logical operators.

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These means and or and the last one, the exclamation mark means not OK, we don't have time to waste.

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We have a lot of things I've created JavaScript lecture for and I'm illington here.

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Just do way, not waste time.

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OK, so write a comment here that we are going to do.

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Let's put it in.

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Was working mockable caps, Lock wasn't working for some reason, so JavaScript conditional.

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Operators and we're going to say and logical operators very you now make here multiline comment.

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Sorry.

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And.

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Here, what I'm going to right is Java script conditionals, and we're going to I'm going to rewrite

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each and every of them if.

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Alice.

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Or else if switch.

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And ternary operator, operator.

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Very good.

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Now here I will write about logical operators.

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Yep, now here we will have and oops, and.

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Or they will pop and the last one is not exclamation mark, OK, that is pretty much what we going to

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cover in this lecture.

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So let's start working on it.

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Actually, here we can get rid of.

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This doesn't look very nice.

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Make sure your coat looks clean and nice.

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OK, so that's what we are going to cover in today's lecture.

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Let's be clear, a couple of variables here.

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Number one, and that will be a variable number two.

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And number two, let's put it 30.

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And please don't make a space here.

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Variable number three, and that will be value of 16.

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So we have three variables declared and initialized with initial values no one will hold and number

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two will hold 30.

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And number three will hold 16.

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OK, the first things first we need to explain what if condition means.

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So if you say if condition.

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Or if statement, it's pretty much the same.

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So if statements and conditions means the same thing.

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OK, now how we are going to write it if statement.

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So the key word is, if so, this is the key word.

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We always need to write it like that in inside here.

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We need to have these brackets, OK?

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Without these brackets, we don't have condition.

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So inside these brackets, we are putting the condition in here.

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I'm going to say no one is smaller than number two and curly brackets.

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So make sure that you are following this this syntax.

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So we have if then we have a bracket.

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Oops.

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And inside those brackets, we do set the condition and now the condition can be anything.

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And I just put number one to be smaller then number two.

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And that is the true number two.

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Sturdee number one is eighty eight.

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So here we can just type comes a lot, we can have a block of code here.

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We can have anything but just to be very specific and short and to tell you that how if condition is

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working, I'm just going to use Konza.

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So don't think that only we can write comes a lot.

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We can write multiple lines of code here based on our logic and in future you will see just that.

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So here I'm going to say number two is bigger than number one.

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OK, semicolon there.

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And let's go back to our browser.

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And here it is.

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Number two is bigger than number one.

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That is true because we saying if no if this condition is true, then.

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This block of code needs to be executed, so this is how the if condition work, if statements or if

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conditions are working.

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So whatever the condition we set here, that needs to be true in order to go inside and run this code

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so we can have multiple lines of code.

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For example, we can say for ABC it will be to ten.

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And if I can type it correctly.

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Right.

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So even I can do console that, lock that A, B, C if it is ten.

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So we can have multiple lines of code, but they will be executed only if this condition is met.

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When I say Matt means true.

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Now the second part else.

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Our statements, they're very important.

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So how are we arriving, El's statement?

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OK, so if no one is bigger now, I'm going to say then number two.

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Number two, then what I'm going to say here, I'm going to change a little bit.

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No one is bigger than number two.

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I'm going to copy this one.

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Just make sure that you copy everything in here.

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I'm putting the else condition.

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But what's most important for you to understand that we can't have here these brackets and set a new

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condition here?

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That is not how it works.

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So let me just finish this one and I will explain you how it will be executed.

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This means that number two is bigger than number one.

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OK, let's talk about it now.

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We do have the condition here and we say number one, which is waiting to be bigger than 30.

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This condition will be not true.

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So it will not go here and execute this block of code.

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What will happen?

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It will go straight to the alse condition and it will execute this line of code.

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Let's see if that is going to work.

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This means that number two is bigger than number one.

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Very good.

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So our logic is pretty much working because we just fixed the condition to our own needs.

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We say, OK, this will be the condition.

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And if it's not catched here, that means that number two is bigger than number one.

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So the line of code.

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So this is how it's usually been described.

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So block of code will be executed only if this first condition fails, for example.

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Now, if I changed back to this one, this here will be executed.

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Number two is bigger than number one, right.

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This will be executed and this will never be executed.

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So when this condition is true, it will go here and then it will never go in the air.

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So it will continue here.

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So let me show you.

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So it will skip the condition here outside of if else.

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Condition right when they hear this here, outside of Al's condition, even if you put it here, you

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see something here, it's not going to be catched because the first condition, if it's true, it will

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go here and it will do it.

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But let's change it like it was before.

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So that is pretty much about if and else condition.

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So let's check else if now, remember, I told you that here we cannot set a new condition, but with

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ALS, if.

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Yes, that is possible.

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So I'm going to copy again this one and let's change a couple of things.

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I'm going to leave this as it is so no one but I need to change here.

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And I will say no one is bigger than number two.

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Right.

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OK, now what I want here is to have another condition where I'm going to say make sure that you put

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the curly brackets here.

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So inside this condition, I would say number one.

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Is bigger than number three, right, and that is true, no one is bigger than number three because

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18 is always bigger than 16.

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So this here will be false.

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This condition will return false and it will skip this one and it will go to the elusive condition.

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Now, why it will go here, not there?

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Well, because here we have another condition.

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And so the block of coal will be executed if condition one fails and it's false.

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So now the condition, too, needs to be checked.

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OK, so yea I will see counsel that logged in.

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I will ride.

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This means no one is bigger than number three.

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Good.

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And we need to change the last part because if that is not true in our case, it is true here we can

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say this means no one is the smallest of all.

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Now here it will go and it will check.

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It will return false.

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This condition will never be executed, but it will go here and it will check No one.

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It's true.

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That is bigger than number three and it will print this line of code.

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So it will never go to the ALS condition.

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Let's save it and go back.

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Very nice.

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So our logic is working and now you know how to use if all else else if conditions.

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So we shall see if we can put another condition.

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For example, you want to check something extra that you haven't checked in the first one, then that's

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it.

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So these can be used to find which of the three numbers is the smallest.

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Right.

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So you can right here, this means that number three is the smallest of all.

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And it will be true because number three is going to be checked.

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Number one is bigger than number three.

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Yeah, but we can you can have multiple multiple combinations here of if alse conditions.

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Right.

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OK, now, last part, not actually the last part.

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Let's do another condition called switch.

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Now we use switch to specify many alternative blocks of code to be executed.

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So let's write how the if else conditions look like in real world world.

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And after that, we are just going to type it back.

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So for the here we do have if but here in switch, we need to use the key word switch.

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Now inside we will have expression.

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Now you know what expression means and we have case X column then code.

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Block will go here, then break.

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Let me just write it all, semicolon, then case.

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Why in Code Block, then we have a break and the last one is called default.

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And it will be called blog.

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And break nice, so that is pretty much how this is written, so the switch expression is evaluated

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only once.

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So this expression can be anything and you will see, for example, we can put a number here, we can

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put a condition here if we want inside, for example, five is greater than four, or we can just put

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anything that we want.

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And based on that expression, it's going to be evaluated at once.

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So the value of this expression is compared to the value of each case and the value of each case is

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going to be here.

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So we need to put our logic there.

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So if there is a match, for example, if I put X here and it will find there is X in this condition,

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block will be match, and if it's match, then the associate block of code will be executed.

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But we also need to have a break, because if we find a match, which is going to break from this,

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which expression it will go out here.

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So it will get out from this entire switch statement.

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So if there is if there is no match, for example, if I put for example, I have X and Y, if I put

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Z here, it will go through the first one.

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There is no match this value.

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It's not Z disvalue.

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It's not Y.

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Yeah, Y is not Z and it will go to the default.

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It will run the default block and that's it.

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It will get out in pretty much the speech expression is done.

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OK, so that is basically how this switch works.

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And this is pretty much the most complicated of all to understand.

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But when somebody explain to you like this, it's not.

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So let's create a variable here called DE in this program, we'll find the day of the week, for example,

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if today's a Sunday, and that is actually two days of Sunday in my place, the day that I'm recording

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this.

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So we will find that today based on the switch statement, we will find which day of the week is.

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But if you watch this video on Monday or Tuesday, you will have a different output.

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So don't worry if you see Sunday with mine and if you see Monday or Tuesday or any day of the week in

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your place.

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Right.

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So that doesn't mean that the CO is not working so far today.

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And what I'm going to use for the first time is I'm going to use a date function here and this date

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going to get day so we don't have to worry about this.

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Now, what this basically will tell us will return is actual number.

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So it will be zero to six.

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I believe it will be zero till six.

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So zero means Sunday.

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And I will just show you.

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So today.

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So this entire method, it's inbuilt and we can use it right out of the box.

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But you don't have to worry about this at this stage here.

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So today's Sunday, that's why it's going to give me zero so zero in Sunday one.

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It's Monday, Tuesday, three Wednesday for Thursday, five Friday and six Saturday now.

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Because I know what are the numbers, I can build the cases so I can say here, I'm going to put the

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date.

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Now let's do the switch.

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And inside expression, I can just create this variable.

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I can just put this variable.

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And I know that this variable will return a number either will be one zero one two three six doesn't

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matter.

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So it will return us a number so I can build these cases now.

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So everything will be easy.

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Now, let's say case zero and I will say de equal sun.

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Very good.

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Then we will have the break then another case, case one.

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So in case today was Monday, it will go here.

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In this case in what I have a block of code there.

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I will say de equal to Tuesday on Monday.

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Sorry.

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And break, then I'm going to copy and paste it now, look what I have done here just to clear the variable

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day, but I've never initialized to anything you can do that it will be rewritten here because you're

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going to put a new value there.

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So I haven't tell you this.

239
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For example, let's do it like this.

240
00:17:13,000 --> 00:17:14,740
If you put something here.

241
00:17:16,680 --> 00:17:17,070
Right.

242
00:17:17,080 --> 00:17:18,760
And if you cancel it, log.

243
00:17:20,800 --> 00:17:28,810
If you consulate log today day, but let me just first comment about this part now.

244
00:17:30,100 --> 00:17:37,300
I have something in store in the day variable, right, but that will change because in a switch statement,

245
00:17:37,690 --> 00:17:41,680
I'm declaring a new variable for the day variable.

246
00:17:41,680 --> 00:17:46,090
So I'm actually I'm declaring a new value for the day variable.

247
00:17:46,120 --> 00:17:46,430
Right.

248
00:17:46,750 --> 00:17:49,690
So whatever we have here, it will be overridden.

249
00:17:50,260 --> 00:17:53,500
OK, now let's do the rest of the blocks.

250
00:17:53,770 --> 00:17:55,000
So I'm just going to copy them.

251
00:17:56,080 --> 00:17:59,180
And I knew that it will mess it up a little bit.

252
00:18:00,940 --> 00:18:01,220
Right.

253
00:18:01,750 --> 00:18:07,910
OK, that's why I don't want to copy and paste too much, but so zero one it will be too.

254
00:18:08,350 --> 00:18:11,440
This will be three and Tuesday.

255
00:18:13,900 --> 00:18:19,910
And this will be Wednesday, so you can you can use anything you want.

256
00:18:19,930 --> 00:18:22,090
You can say short Wednesday.

257
00:18:24,230 --> 00:18:26,870
Now, let's face this one.

258
00:18:28,330 --> 00:18:33,740
A couple more times here, so case zero, one, two, three, then.

259
00:18:36,230 --> 00:18:45,440
Uh, this will be for this will be Phibes five and this will be six, and we are done, ladies and gentlemen,

260
00:18:45,650 --> 00:18:47,840
so four will be Thursday.

261
00:18:50,380 --> 00:18:55,330
And number five will be Friday, number six will be.

262
00:18:56,650 --> 00:18:57,400
Saturday.

263
00:19:01,070 --> 00:19:12,230
And you can put it here, default, so if there is a some number, but it will not happen, but if you

264
00:19:12,230 --> 00:19:15,890
put here manually seven, we are not getting anything seven.

265
00:19:16,040 --> 00:19:19,390
So we need to specify our default code block here.

266
00:19:19,520 --> 00:19:28,810
So the default statement will say they equal something went wrong.

267
00:19:30,680 --> 00:19:34,710
And Rick, that is pretty much it.

268
00:19:35,120 --> 00:19:35,540
So.

269
00:19:36,820 --> 00:19:41,700
What is the last thing we need to do to control it, like the day of the week?

270
00:19:42,400 --> 00:19:42,880
Nice.

271
00:19:43,940 --> 00:19:50,090
OK, so let's go through this statement one more so the Swedish statement, we said the expression here

272
00:19:50,300 --> 00:19:55,340
and this expression, this function will return from zero until six.

273
00:19:55,610 --> 00:19:59,720
And because of that, we build the cases zero until six.

274
00:19:59,990 --> 00:20:04,750
And if today's zero, it will go here, it will match this value.

275
00:20:04,880 --> 00:20:08,360
So make sure that you are you understanding this part.

276
00:20:08,360 --> 00:20:16,340
Whatever we put here, if we put high here, we need to have high here as well in order to get in this

277
00:20:16,340 --> 00:20:22,340
part before in the past, when I was learning this while I was a little bit confused because no one

278
00:20:22,340 --> 00:20:26,030
told me so, they just gave us exercises to do.

279
00:20:26,030 --> 00:20:29,660
And I was just confused why how is this working?

280
00:20:29,660 --> 00:20:36,740
But now, you know, so based on this, the value of this expression, it will be matched in and in

281
00:20:36,740 --> 00:20:37,820
one of these condition.

282
00:20:37,940 --> 00:20:40,120
If not, the default will kick in.

283
00:20:40,430 --> 00:20:45,290
OK, and inside we setting the date to before was something.

284
00:20:45,290 --> 00:20:50,040
Now we sitting to Sunday, Monday, Tuesday, Wednesday and so on, so forth.

285
00:20:50,090 --> 00:20:51,050
OK, save it.

286
00:20:52,100 --> 00:20:57,280
Now, let's go back here and it's going to say Sunday because today is really Sunday.

287
00:20:57,710 --> 00:20:58,700
Very good.

288
00:20:59,090 --> 00:21:02,720
And I'm not I don't need to control the clock here.

289
00:21:02,900 --> 00:21:05,630
So that is pretty much about the switch statement.

290
00:21:06,780 --> 00:21:11,020
The last thing that I want to explain is ternary operator.

291
00:21:12,240 --> 00:21:17,210
Now, this is a basically pretty much new but I just want to include it here.

292
00:21:17,550 --> 00:21:22,460
So for the ternary operator, we have something like this condition.

293
00:21:22,980 --> 00:21:26,520
Then we have a question mark, then we have expression.

294
00:21:26,970 --> 00:21:36,780
If true, then we have Callon here, an expression if false.

295
00:21:38,700 --> 00:21:40,500
And this is pretty much confusing, right?

296
00:21:40,800 --> 00:21:50,930
So this operator is frequently used as a short cut of this weight of this if statement, if else.

297
00:21:50,970 --> 00:21:51,270
Right.

298
00:21:51,600 --> 00:21:53,580
So we have a condition here.

299
00:21:54,000 --> 00:21:58,890
We're saying if this condition is true, then do this block of code else do this block of code.

300
00:21:58,920 --> 00:21:59,280
Well.

301
00:22:00,570 --> 00:22:05,210
That is pretty much it, but we are going to do in one single line, we are setting the conditions first.

302
00:22:05,400 --> 00:22:09,420
The question mark, if the condition is true, Will will go to this one.

303
00:22:09,690 --> 00:22:16,010
And this column here means if the condition is false, whatever we put here, it will be executed.

304
00:22:16,260 --> 00:22:24,390
Well, let's, for example, set some person age to be twenty six and check if he can drink beer or

305
00:22:24,390 --> 00:22:26,100
juice based on his age.

306
00:22:26,280 --> 00:22:31,050
So I'm going to say var variable my age and let's put it here.

307
00:22:31,050 --> 00:22:31,710
Twenty six.

308
00:22:31,720 --> 00:22:36,240
You can always practice this with prompt, you can prompt the user for age and.

309
00:22:36,240 --> 00:22:38,850
Yeah but today I don't have time to do this.

310
00:22:39,060 --> 00:22:45,810
Now I'm going to say beverage and here I'm going to set the condition actually.

311
00:22:47,240 --> 00:22:48,180
I'm doing this.

312
00:22:48,320 --> 00:22:56,540
Let me just show you first so we can do it like this, my age is greater or equal to twenty six, but

313
00:22:56,540 --> 00:22:58,520
it will work with greater only.

314
00:22:58,790 --> 00:22:59,640
Just want to be sure.

315
00:23:00,320 --> 00:23:08,990
Then the question mark, I can have a beer and else I will have juice.

316
00:23:11,000 --> 00:23:12,780
And that's pretty much it.

317
00:23:13,130 --> 00:23:22,220
Now, the output of this, I just want to store it in a variable called beverage and what will happen.

318
00:23:22,230 --> 00:23:24,060
So my age is 26.

319
00:23:24,380 --> 00:23:27,950
It will go here and it will say, OK, here should be twenty one.

320
00:23:28,490 --> 00:23:30,410
Right to always be.

321
00:23:30,680 --> 00:23:31,660
So twenty six.

322
00:23:32,270 --> 00:23:35,050
So I'm saying twenty six is bigger or equal to twenty one.

323
00:23:35,270 --> 00:23:40,240
It's bigger, it's not equal but it's bigger than twenty one because that condition is true.

324
00:23:40,670 --> 00:23:45,980
We are going to do this part and this part is the if condition.

325
00:23:45,980 --> 00:23:46,320
Right.

326
00:23:46,820 --> 00:23:51,080
If that was not true, I will only be allowed to drink juice.

327
00:23:51,080 --> 00:23:55,160
So beverage will hold beer, not juice.

328
00:23:55,310 --> 00:23:58,100
Because this condition is true and we need true.

329
00:23:58,100 --> 00:24:02,760
We have this expression then if we have something else then we're going to have false conditions.

330
00:24:02,780 --> 00:24:05,920
OK, now control it like the beverage.

331
00:24:07,490 --> 00:24:08,060
Save it.

332
00:24:09,370 --> 00:24:09,980
Here he is.

333
00:24:10,000 --> 00:24:10,910
I do have a beer.

334
00:24:11,110 --> 00:24:14,230
What if what will happen if I have 20 years?

335
00:24:15,700 --> 00:24:23,260
Now, the condition is false and expression is false will be this after this column here.

336
00:24:24,180 --> 00:24:28,950
And I will have juice because a minor I can't drink now.

337
00:24:29,040 --> 00:24:37,590
That is called ternary operator and we usually use this operator as a short version of if our statement

338
00:24:37,950 --> 00:24:39,660
that is pretty much it.

339
00:24:40,120 --> 00:24:43,740
Now, last part, we will do logical operators

340
00:24:47,130 --> 00:24:51,630
and we're going to start wi and now this is a very, very nice.

341
00:24:52,290 --> 00:25:00,800
In order for you to understand, I'm going to say our first first name and that will be Tom, Tom and

342
00:25:00,900 --> 00:25:02,630
Vau last name.

343
00:25:03,030 --> 00:25:05,400
Let me just write this one cruise.

344
00:25:07,000 --> 00:25:17,200
I hope I spelled his last name correctly, if a first name is equal, equal to Hoopes, this means equal

345
00:25:17,830 --> 00:25:20,500
in to Tom.

346
00:25:21,870 --> 00:25:27,000
And last name is equal, equal to Crewes.

347
00:25:29,160 --> 00:25:36,210
And let me just write this one down and we can just talk it, what will happen while we have a famous

348
00:25:37,020 --> 00:25:38,710
by the way, you can write anything you want to hear.

349
00:25:38,970 --> 00:25:39,660
Actor.

350
00:25:42,160 --> 00:25:42,670
Here.

351
00:25:43,710 --> 00:25:45,690
Doing JavaScript.

352
00:25:48,520 --> 00:25:49,520
Nice.

353
00:25:50,440 --> 00:25:50,970
OK.

354
00:25:51,820 --> 00:25:52,480
Ls.

355
00:25:54,840 --> 00:25:57,780
Council that long form.

356
00:25:59,400 --> 00:26:02,760
Get back here and start working.

357
00:26:05,590 --> 00:26:08,460
It is an exclamation mark because we are yelling at him.

358
00:26:09,600 --> 00:26:10,830
That's not good, right?

359
00:26:11,700 --> 00:26:13,650
We not like that, we're not yelling to anyone.

360
00:26:14,270 --> 00:26:18,680
OK, now pretty much this may be a confusing so what we did.

361
00:26:18,990 --> 00:26:20,420
So we create two variables.

362
00:26:20,550 --> 00:26:23,370
First one is the first name it will hold value to.

363
00:26:23,820 --> 00:26:25,740
The second one is the last name.

364
00:26:25,740 --> 00:26:32,070
It will hold value of cruise hits its last name right now what we are doing here.

365
00:26:32,400 --> 00:26:38,800
So we are using logical operators in combination with the JavaScript operator.

366
00:26:39,180 --> 00:26:46,380
Yeah, we are using in combination with JavaScript conditionals with any of this right now why we are

367
00:26:46,380 --> 00:26:46,920
doing this.

368
00:26:47,250 --> 00:26:54,990
So when I have these and means what I have in the first condition needs to be true and what I have in

369
00:26:54,990 --> 00:26:59,580
the second condition needs to be true in order to execute this code of block.

370
00:26:59,790 --> 00:27:06,120
So both of these cases here, the first one, the one that I have on the left from the end operator

371
00:27:06,660 --> 00:27:07,800
needs to be true.

372
00:27:08,040 --> 00:27:08,430
Right?

373
00:27:08,820 --> 00:27:10,170
So that is how it's working.

374
00:27:10,170 --> 00:27:16,560
And in our case, our first name is true for Tom and our last name is true.

375
00:27:16,650 --> 00:27:17,760
It's Kroos.

376
00:27:18,060 --> 00:27:22,080
So it should go here and say, wow, we have a famous actor.

377
00:27:22,410 --> 00:27:23,200
That's pretty much it.

378
00:27:23,520 --> 00:27:30,630
Now, if I, for example, say here that the first name should be Tommy and the last name should be.

379
00:27:31,500 --> 00:27:33,090
Well, this is not true.

380
00:27:33,090 --> 00:27:37,050
The first name holds Tom and this condition will be false.

381
00:27:37,200 --> 00:27:43,380
So I have false and true and false and true will always get me back false.

382
00:27:43,500 --> 00:27:45,510
So it will not go here.

383
00:27:45,510 --> 00:27:47,970
It will be catched in the condition.

384
00:27:47,970 --> 00:27:50,310
Tom, get back here and start working.

385
00:27:50,310 --> 00:27:52,740
So this is how the end operator works.

386
00:27:52,980 --> 00:28:01,910
Both sides of this line here needs to be true in order to order this code or block to be executed.

387
00:28:02,220 --> 00:28:05,850
OK, now I'm going to copy the same thing again.

388
00:28:06,390 --> 00:28:10,740
And, uh, let's change this one to order.

389
00:28:12,090 --> 00:28:14,280
And I'm not going to redeclared him again.

390
00:28:14,610 --> 00:28:14,770
Right.

391
00:28:14,880 --> 00:28:17,100
That's not a good point in here.

392
00:28:17,100 --> 00:28:20,280
Change the end with or now.

393
00:28:21,330 --> 00:28:24,060
If I do it like that, I will have the same same output.

394
00:28:24,060 --> 00:28:24,420
Why?

395
00:28:24,720 --> 00:28:32,290
Because war means only one of the condition doesn't matter if this or this needs to be true in order

396
00:28:32,290 --> 00:28:33,630
for this block to be executed.

397
00:28:33,690 --> 00:28:34,500
It's only one.

398
00:28:34,650 --> 00:28:37,650
For example, if I put here Tommy, that is false.

399
00:28:37,950 --> 00:28:39,480
But this one is true.

400
00:28:39,840 --> 00:28:45,030
So other means just I need any of this condition to be true in order to get here.

401
00:28:45,720 --> 00:28:47,820
And yet we do have the same result.

402
00:28:48,000 --> 00:28:55,950
So any only one, only one scenario is possible to go to the condition when this is both of the conditions

403
00:28:55,950 --> 00:28:56,190
here.

404
00:28:56,190 --> 00:28:57,630
Are we doing we are checking.

405
00:28:57,630 --> 00:28:59,310
They are not true.

406
00:28:59,910 --> 00:29:01,770
And that will go back there.

407
00:29:01,980 --> 00:29:09,090
So Tommy and Cruz, they're not same what we have stored here in this variable now, you know, the

408
00:29:09,090 --> 00:29:10,170
power of.

409
00:29:11,170 --> 00:29:16,090
And I'm going to leave it like this with one mistake here, because you need to know, so that is pretty

410
00:29:16,090 --> 00:29:16,490
much it.

411
00:29:16,900 --> 00:29:20,200
Now, I can see here two of the conditions.

412
00:29:22,390 --> 00:29:35,290
Only one of the conditions can be only one of the conditions needs to be true in order to execute the

413
00:29:35,470 --> 00:29:36,330
if block.

414
00:29:37,690 --> 00:29:38,070
Right.

415
00:29:38,110 --> 00:29:42,340
And I'm going to copy the same thing in here.

416
00:29:42,340 --> 00:29:53,080
It's different to the condition to two of the condition needs to be true in order to execute the IV

417
00:29:53,080 --> 00:29:54,120
like cool.

418
00:29:54,550 --> 00:30:00,500
And the last one is just going to copy this one again and let's change it.

419
00:30:00,730 --> 00:30:02,320
This should be exclamation mark.

420
00:30:02,320 --> 00:30:04,030
End means not.

421
00:30:05,280 --> 00:30:13,620
OK, so what not does pretty much interesting, so let's I don't need here to conditions for this one

422
00:30:13,620 --> 00:30:17,250
to explain it and we're going to do more in future.

423
00:30:18,180 --> 00:30:22,800
So don't worry about it, so we're going to do more in future with not so you're going to have more

424
00:30:22,800 --> 00:30:26,970
practice and if you don't understand it right now, you just don't need to freak out.

425
00:30:27,000 --> 00:30:28,180
That's what I'm trying to say.

426
00:30:28,600 --> 00:30:34,970
OK, now I'm going to say it like this, and I'm just going to cut it from here.

427
00:30:34,980 --> 00:30:36,810
I'm going to say exclamation mark.

428
00:30:37,020 --> 00:30:40,510
I'm going to put another pair of brackets, put the condition there.

429
00:30:40,710 --> 00:30:42,930
So first name equal to Tom.

430
00:30:42,960 --> 00:30:43,950
Let's change this one.

431
00:30:44,640 --> 00:30:46,140
And I will say Conjola.

432
00:30:47,880 --> 00:30:49,230
Hi, Tom.

433
00:30:50,520 --> 00:30:56,730
Make sure that high capital H looks doesn't look good in here.

434
00:30:57,150 --> 00:30:58,830
Who are you?

435
00:30:58,830 --> 00:31:01,360
If you're not Tom, then who are you in questionmark.

436
00:31:01,650 --> 00:31:02,050
Right.

437
00:31:02,460 --> 00:31:03,670
So what do you think will happen?

438
00:31:03,690 --> 00:31:04,570
Let's go back here.

439
00:31:05,130 --> 00:31:05,880
Who are you?

440
00:31:06,600 --> 00:31:07,020
Well.

441
00:31:08,320 --> 00:31:13,120
Let me just copy this one first name here just to explain this one.

442
00:31:13,900 --> 00:31:14,760
So first name?

443
00:31:15,040 --> 00:31:19,330
Well, first name, it's Tom and it's equal to Tom.

444
00:31:19,520 --> 00:31:20,620
So what is happening?

445
00:31:20,650 --> 00:31:27,370
Well, we have this not and what this operate what this operator logical operator would do.

446
00:31:27,370 --> 00:31:39,010
It will do will turn true condition to false and false to true.

447
00:31:39,400 --> 00:31:47,110
Now because I have it here and this entire thing doesn't matter with the operator needs to be true in

448
00:31:47,110 --> 00:31:47,950
order to get here.

449
00:31:47,950 --> 00:31:54,690
But the first part was true and say the first name is pretty much equal to the value system.

450
00:31:55,000 --> 00:31:59,070
But here I just say Nannygate make that opposite.

451
00:31:59,350 --> 00:32:01,190
So if it's true, make it false.

452
00:32:01,240 --> 00:32:06,460
So if this condition is false, then this will never be executed.

453
00:32:06,460 --> 00:32:07,360
It will go here.

454
00:32:07,660 --> 00:32:11,510
So make sure that you understand this part if we have here, Tommy.

455
00:32:12,490 --> 00:32:13,850
Now, look, how bizarre is this.

456
00:32:15,070 --> 00:32:22,200
So if we have here, Tommy, and this is not true, but here with the the not operator will say, yeah,

457
00:32:22,210 --> 00:32:24,880
now the false I will make it true.

458
00:32:25,030 --> 00:32:28,060
If if true, then I will do this part.

459
00:32:28,390 --> 00:32:29,260
Say hi, Tom.

460
00:32:30,000 --> 00:32:30,360
Right.

461
00:32:30,880 --> 00:32:37,420
So make sure that you understand the not operator will turn every anything that we have here to the

462
00:32:37,420 --> 00:32:38,170
opposite value.

463
00:32:38,170 --> 00:32:39,970
If it's true, it will turn into false.

464
00:32:40,120 --> 00:32:42,250
If it's false, it will turn out to true.

465
00:32:42,460 --> 00:32:43,960
And that is pretty much it.

466
00:32:44,140 --> 00:32:45,310
We will do much, much more.

467
00:32:45,310 --> 00:32:46,630
And you have exercises.

468
00:32:46,630 --> 00:32:47,290
Please do them.

469
00:32:47,740 --> 00:32:49,930
So let me just recap what we have done.

470
00:32:50,140 --> 00:32:55,630
We have done all of these conditionals and we have included these logical operators.

471
00:32:55,840 --> 00:33:02,980
And yeah, that is pretty much it for the if to be this code of block to be executed, this condition

472
00:33:02,990 --> 00:33:03,850
should be true.

473
00:33:04,270 --> 00:33:11,890
And the keyword is if now when we have else, when this condition is not true, the else kicks in and

474
00:33:11,890 --> 00:33:14,650
the code of lock here that we have will be executed.

475
00:33:14,830 --> 00:33:23,470
The else if if we use or else if we always use in a combination with if y because this condition, if

476
00:33:23,470 --> 00:33:27,700
this condition is not true, it will go to check the second condition that we said.

477
00:33:27,850 --> 00:33:31,180
And even if that is not true, it will go to the LS.

478
00:33:31,180 --> 00:33:33,940
But if it's true, it will print out here.

479
00:33:34,180 --> 00:33:36,790
The switch statement requires an expression.

480
00:33:37,030 --> 00:33:44,680
Wherever we have here in this expression needs to be found it in the cases so case X and Y so needs

481
00:33:44,680 --> 00:33:45,280
to be matched.

482
00:33:45,280 --> 00:33:46,720
And that's why we did here.

483
00:33:47,020 --> 00:33:49,090
They but I'm just going to delete here.

484
00:33:49,090 --> 00:33:51,610
I'm just going to leave it like they just like that.

485
00:33:52,260 --> 00:33:53,230
It is Sunday.

486
00:33:53,410 --> 00:33:58,370
Now this is working because here we just declaring the value based on the expressions.

487
00:33:58,390 --> 00:34:05,410
If the expression is zero it will go here at zero and the function here and you date that get they will

488
00:34:05,410 --> 00:34:08,320
always return from zero till six.

489
00:34:08,590 --> 00:34:14,680
And that is why we can just create this switch statement and find out what day of the week we are at

490
00:34:14,680 --> 00:34:15,240
the moment.

491
00:34:15,430 --> 00:34:21,580
So in your when you watching this video, if you watching on Tuesday, you will have a different you

492
00:34:21,580 --> 00:34:27,640
will have two and then you will need to probably the output will be Tuesday here.

493
00:34:27,640 --> 00:34:29,620
So don't be afraid.

494
00:34:29,620 --> 00:34:33,160
If you don't see Sunday as me, that's pretty much it for this weekend.

495
00:34:33,160 --> 00:34:36,150
And we did the ternary operator.

496
00:34:36,150 --> 00:34:38,970
Are we going to do this operator in future semicolon here?

497
00:34:38,970 --> 00:34:44,650
I did forget that part and make sure that you're not doing the mistakes that I do.

498
00:34:44,830 --> 00:34:46,350
OK, I will see this one.

499
00:34:46,360 --> 00:34:48,520
This was super long and I'm so sorry about this.