id.length==0 || id=="" Don't you think both mean the same thing?

I think it's my first time seeing the code written like you said.
I don't know the intention, but I don't think it's a good code either.
To see if it is an empty string or not, just compare it with ".

Also, id.length == 0 and id == " do not have the same meaning.
For example, if id is 0, id.length is undefined, so the result of id.length==0 is false and id=="/code> is the result of is the result of undefined.

const id = 0;
console.log(id.length == 0); // false
console.log(id == ""); // true

Of course, if you assume that id is a string, the result will be the same.

There are several reasons why I don't think this code is good: