All JavaScript Passengers, Attention Please
September 28, 2007
This is an example why should one follow the rule of using ‘===’ and avoid ‘==’
var a = [];
[!!a, a == false] == [true, true]
You get !!a == true and at the same time a == false, now you are confused, ain’t you?
Therefore never ever you should be using in your code ‘==’ operator.
[!!a, a [...]