Negative numbers to binary string in JavaScript

Question

Anyone knows why javascript Number.toString function does not represents negative numbers correctly?

//If you try
(-3).toString(2); //shows \"-11\"
// but if         


        

Answer 1

var binary = (-3 >>> 0).toString(2); // coerced to uint32

console.log(binary);

console.log(parseInt(binary, 2) >> 0); // to int32

on jsfiddle

output is

11111111111111111111111111111101
-3