One more reason to check for strict equality in JavaScript
12th February 2014 | by Adam Beres-Deak | javascript, fun
Some JavaScript fun without further explanation.
var a = [0, 1, 2, 3, 4, 5, 6];
console.log(a[3]); // 3
console.log(a[[3]]); // 3
console.log(a[[[3]]]); // 3
console.log(a[[[[3]]]]); // 3
console.log(a[[[[[3]]]]]); // 3
console.log(a["3"]); // 3
console.log(3 == [3]); // true
console.log(3 == [[3]]); // true
console.log(3 === [[3]]); // false
3 === Number([3].valueOf().toString()) // true
console.log([3].valueOf()) // [3]
console.log([3].valueOf().toString()) // 3
console.log(Number("3")) // 3
// therefore:
3 === Number([3].valueOf().toString()) // trueResources - questions on Stack Overflow:
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