hex to string in javascript

How can I convert: from: '\\x3c' to: '<';

I tried:

s=eval(s.replace("\\\\", "")); 

does not work. How I do this? Thanks i开发者_开发技巧n advance!

Use String.fromCharCode instead of eval, and parseInt using base 16:

s=String.fromCharCode(parseInt(s.substr(2), 16));

If you're using jQuery, try this: $('<div>').html('\x3c').text()

Else (taken from here)

function htmlDecode(input){
  var e = document.createElement('div');
  e.innerHTML = input;
  return e.childNodes.length === 0 ? "" : e.childNodes[0].nodeValue;
}

One way to do it, which will incur the wrath of people who believe that "eval" is unequivocally evil, is as follows:

var s = "\\x3c";
var s2 = eval('"' + s + '"'); // => "<"