javascript字符集转换函数

function Str2Unicode(str){
var arr = new Array();
for(var i=0;i<str.length;i++){
  arr[i]="&#" + str.charCodeAt(i) + ";";
}
return(arr.toString().replace(/,/g,""));
}

function Unicode2oStr(str){
var re=/&#[\da-fA-F]{1,5};/ig;
var arr=str.match(re);
if(arr==null)return("");
for(var i=0;i<arr.length;i++){
  arr[i]=String.fromCharCode(arr[i].replace(/[&#;]/g,""));
}
return(arr.toString().replace(/,/g,""))
}