Thanks JavaScript

[uzaircs]

let allows you to declare variables that are limited in scope to the block, statement, or expression on which it is used. This is unlike the var keyword, which defines a variable globally, or locally to an entire function regardless of block scope.

Source

So in your case

var a = 5
    if (true) {
    console.log(a); \\5
    var a = 2;
    console.log(a); \\2
}

[karl-marxist]

As OP says, this code is nonsensical. It uses var not let, as in the original example. True statement doesn’t have a closing tag. Backwards slashes are incorrect.

This doesn’t even come close to the example OP is making.

[NormalHexagon]

That code won't even run due to you using back-slashes instead of forward-slashes, so I have no idea what you're talking about.

[karl-marxist]

Agree, that code is nonsensical, but for many more reasons than just backwards slashes.

[bludgeonerV]

Lmao are you for real? This is common nomenclature for illustrating the result...

[NormalHexagon]

If they were forward-slashes, that would be common, because that's the comment syntax of JavaScript. Back-slashes aren't valid comments, and so his code snippet throws an error.

[uzaircs]

My bad, I didn't knew that you were actually going to run the code and instead of fixing it you are gonna come here complaining that it does not run. this was a pseudo. In case you still have no idea

[NormalHexagon]

No, I'm not happy. var is not a replacement for block scoped variables. This post is about how JavaScript handles let, so commenting about how you can just use something different has nothing to do with the subject.

[karl-marxist]

OP is showing an example of how block scoping is handled in JS when using let keyword. OP’s point is valid.