this post was submitted on 25 Jan 2024
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[–] [email protected] 42 points 6 months ago* (last edited 6 months ago) (24 children)

I still don't understand the === operator

Edit: I think a more type strict ==? Pretty sure I understand the point of typescript now.

[–] [email protected] 127 points 6 months ago* (last edited 6 months ago) (1 children)

So in JavaScript there’s the assignment

=

and the comparator is

==

Since there’s no types JS will do implicit conversion before comparison when using == in a case like this

if(false == '0'){
    //this is true
}

But with === it doesn’t. It means literally compare these

if(false === '0'){
    //this is false
}else{
    //so this will execute instead 
}

But this, however, will

var someState = false;
 if(someState === false){
    //this is true
}
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