All JavaScript Passengers, Attention Please

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 === false] == [true, false] – > Feels better now, ain’t it?

“Follow the rules” is sometime a rule one should follow