js 解密 16进制转10进制，再取ascii码的对应值

<div id=code style='display:none'>这里放你的那些代码</div>
<script>
s = document.getElementById('code').innerHTML;
s = s.replace(/\x../g, function(a) {return eval('"'+a+'"')})
  .replace(/\u(....)/g, function(a,b){return String.fromCharCode(eval('0x'+b))})
document.write(s)
</script>