geeky · javascript

Javascript Hoisting

Hey for those who think they really know javascript, what do you think the following code will do:

var foo = 1;
function bar() {
    if(!foo) {
        var foo = 10;

Then, run the following
Were you expecting 1? so WTF?

Look up javascript hoisting 🙂

2 thoughts on “Javascript Hoisting

    1. yup. all floating point math has rounding issues tho not really a unique problem to javascript

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