How does the single equal sign work in the if statement in javascript

Question

Recently I saw a statement that works in javascript on the internet and I wonder what the meaning of a single equal sign (=) in javascript as I mostly use in if statements i

Answer 1

If you check the console, it says Unexpected token var. You're just not supposed to declare variables in the condition of an if statement.

If you ever do actually mean to make an assignment inside the condition, just declare the variable first, like this:

var i;
if(i = 1){
   alert(i);
}

I see that you already know the difference between assignment and comparison, though, which is good :)