js unicode处理

//岗位详细界面
var str="1、u000Du21B52、u000Du21B53";

var pad = function() {
 var tbl = [];
 return function(num, n) {
  var len = n-num.toString().length;
  if (len <= 0) return num;
  if (!tbl[len]) tbl[len] = (new Array(len+1)).join('0');
  return tbl[len] + num;
 }
}();

setValue_Instructions(str);

console.log(str)
console.log("---------------------")
console.log(getValue_Instructions());


 "u21B5".charCodeAt(0).toString(16)
--------------------------------------------------------------

 "u21B5".charCodeAt(0).toString(16)



String.fromCharCode(72,69,76,76,79)