十六进制到javascript中的字符串

Question

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

I tried:

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

does not work. How I do this? Thanks in advance!

Answer 1

使用String.fromCharCode而不是eval ，使用parseInt使用base 16：

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

Answer 2

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;
}

Answer 3

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 + '"'); // => "<"