How do I compare string and boolean in Javascript?

Question

I got the Json \"false\" from server. I respond as bool but it\'s Json so it\'s in browser type is String instead of bool

Answer 1

String.prototype.revalue= function(){
  if(/^(true|false|null|undefined|NaN)$/i.test(this)) return eval(this);
  if(parseFloat(this)+''== this) return parseFloat(this);
  return this;
}

From: http://www.webdeveloper.com/forum/showthread.php?t=147389

Actually, you just need the first "if" statement from the function -- tests to find true or false in the code and the evals it, turning it into the boolean value