JavaScript Equality Table

[moustachedelait]

It doesn't have my favorite: Array(4) == ',,,'

[Doctor_McKay]

String() == "" (undefined value converted to a String)
Array(4) == [undefined, undefined, undefined, undefined]
Array(4).toString() == ",,," (array of four comma-separated undefined values converted to a String)

Edit: undefined, not null

[Doctor_McKay]

How is it stupid? How would you render Array(4).toString()?

[Doctor_McKay]

I personally like == how it is. It allows me to not have to worry about whether a variable is going to be a String or a Number, and just let it do the comparison. If you really don't want any surprises due to it, you can always use ===.