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Welcome back everybody.

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All right.

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So let's go ahead and let's go and add something to the if statement so if I type in any kind of word

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here and I change the text it all works just same as the last of Toral.

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Now you can add something to the statement called an L statement which is something you just say.

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Else.

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Now of course an else statement needs to curly braces.

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And what I mean to do here is I'm going to copy this over and paste it in here instead of making change

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text variable to something.

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I'm just going to make it make two strings saying else statement fired up like that k and all it's all

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going to say is that when I do this here for example if I type in word f here it's going to work because

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cool numbers equal one.

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But if I change just two instead of the if statement is going to go to the else and let's just walk

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through.

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So is if the if statement is equal to 1 then this is going to work.

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Elle's means that if cool number is equal to any other number other than 1 it will go ahead and put

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this in here so I can type in whatever I want but it's going to say L statement as far as always going

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to say that if cool number is not equal to what it could be equal to a thousand it can be equal to negative

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56.

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It doesn't matter what what cool number is equal to if it's not equal to 1.

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The statements get to fire.

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Now the other thing that we need to check up here is that you'll see that there are two change text

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variables.

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And why is why can this work.

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So you'll see that there is a change text variable here and then a change takes a variable here.

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Now in a couple of previous tutorials I did tell you that you can't make a variable equal to the same

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name.

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And I did say that but it changes a little bit here.

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If I were to add a number another variable called Cool number it would throw an exception because the

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computer doesn't necessarily know which cue which variable to look at.

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So it could be cool number or cool number which is the same.

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It gets confused.

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However when you set up a variable within these curly brackets this this works is something called variable

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scope meaning that change takes variable is only usable within this if statement.

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I can't use it outside of this if statement at all.

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Right.

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And again just change text variable is only usable within the else statement.

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It's not usable outside that.

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So if I Hopoate outside the IF and then by the way this is the entire If statement here.

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This is the if statement and this is the statement but the whole thing works like this.

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OK.

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And.

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And so if you think about it here this is more function we can you know do some stuff in here but if

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I type in change text variable k you see that it does kind of work but it won't it won't.

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You can see that there's a whole bunch of warnings here that the text changes.

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But again you know in this editor it doesn't it only looks for the strings within within the document

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and doesn't look for it inside scope.

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You need to go to something like Visual Studio or next quarter of stuff like that.

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OK.

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But you can see there's four warnings here and because this variable is essentially undefined meaning

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that it doesn't even know it exists right.

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And again remember you have to declare the variable which is what I've done here.

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In order for the computer to see if that variable is actually usable.

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So again I can get away with this and we can I can get away with actually having to change text variable

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in as many if statements is what I could have a 100 of these if I really wanted to.

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Now the major question is is should you change the variable within the if any else statement.

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So for example here you can see that it says there's two changes text variables that can get kind of

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confusing.

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Some people do change it up.

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It's up to you whether you want to do that or not.

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Personally I tend to not use these local variables as much as I can.

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One thing that javascript is actually really good at is referencing virtual variables across scope in

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other programming languages.

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It's not necessarily that easy.

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All right so for the most part that is how an else statement works.

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All right I'll see you guys in next tutorial.