WTF to convert integer to string:

var i = 1;
var str = i + "";

What's wrong with it?

Well, it's shorter than i.toString()

Why not
var i = 1;
i = i + “”;

Also I prefer

i = "" + i;

so I'm sure, what the resulting datatype is. Consider

i = 5 + c * s + f + a + i + "";

for the "proof".

@moagggi pretty much as expected. Adding ' ' at start and end won't make any different. Anything did I miss?

Foremost, it looks ugly.

Secondly, the purpose of '+' operator is addition/concatenation, not to convert number into string.

Lastly, engine/compiler has to do 2 operations: first convert the number and then concatenate empty string.