title: how to convert a string containing utf8 hex codes to a javascript string
body: <p>I have a string that contains hexadecimal string (content of a utf8 string )</p>
  
  <pre><code>"666f6f6c 6973686e 6573732c 20697420 77617320 74686520 65706f63 68206f66 2062656c 6965662c 20697420 77617320 74686520 65706f63 68206f66 20696e63 72656475 6c697479 2c206974 20776173 20746865 20736561 736f6e20 6f66204c 69676874 2c206974 20776173 20746865 2073656"
  </code></pre>
  
  <p>I need to convert it back to a javascript string. how to do it ?</p>