中文转utf8

function EncodeUtf8(s1){
       var s = escape(s1);    var sa = s.split("%");    var retV ="";    if(sa[0] != "")    {
           retV = sa[0];    }    for(var i = 1; i < sa.length; i ++)    {
             if(sa[i].substring(0,1) == "u")          {
                 retV += Hex2Utf8(Str2Hex(sa[i].substring(1,5)));          }          else retV += "%" + sa[i];    }    return retV;}function Str2Hex(s){
       var c = "";    var n;    var ss = "0123456789ABCDEF";    var digS = "";    for(var i = 0; i < s.length; i ++)    {
          c = s.charAt(i);       n = ss.indexOf(c);       digS += Dec2Dig(eval(n));    }    //return value;    return digS;}function Dec2Dig(n1){
       var s = "";    var n2 = 0;    for(var i = 0; i < 4; i++)    {
           n2 = Math.pow(2,3 - i);        if(n1 >= n2)        {
             s += '1';          n1 = n1 - n2;        }        else        s += '0';    }    return s;}function Dig2Dec(s){
       var retV = 0;    if(s.length == 4)    {
           for(var i = 0; i < 4; i ++)        {
               retV += eval(s.charAt(i)) * Math.pow(2, 3 - i);        }        return retV;    }    return -1;}function Hex2Utf8(s){
       var retS = "";    var tempS = "";    var ss = "";    if(s.length == 16)    {
           tempS = "1110" + s.substring(0, 4);        tempS += "10" +  s.substring(4, 10);         tempS += "10" + s.substring(10,16);         var sss = "0123456789ABCDEF";        for(var i = 0; i < 3; i ++)        {
             retS += "%";          ss = tempS.substring(i * 8, (eval(i)+1)*8);          retS += sss.charAt(Dig2Dec(ss.substring(0,4)));          retS += sss.charAt(Dig2Dec(ss.substring(4,8)));        }        return retS;    }    return "";}

utf8转中文

// UTF8编码转成汉字字符串function revertUTF8(szInput) {
   	var x,wch,wch1,wch2,uch="",szRet="";	for (x=0; x

测试

var utf = EncodeUtf8("你好");  var uni = revertUTF8(utf);  console.log('utf:'+utf + ' '+'uni:' + uni);  输出：	monitor_pd.js:159 utf:%E4%BD%A0%E5%A5%BD uni:你好

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