如何用javascript将中文转换为UTF-8编码?

发布网友发布时间：2022-04-22 23:33

共4个回答

热心网友时间：2022-04-23 02:53

//--------把中文字符转换成Utf8编码------------------------//
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_r(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_r(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_r(i)+1)*8);



            retS += sss.charAt(Dig2Dec(ss.substring(0,4)));
            retS += sss.charAt(Dig2Dec(ss.substring(4,8)));
         }
         return retS;
     }
     return "";
  }

热心网友时间：2022-04-23 04:11

　　（1）在网页head标签里添加<meta charset="utf-8"></meta>即可转换为utf-8编码
　　（2）要是转换为中文同理只需将charset="gb2312"即可

热心网友时间：2022-04-23 05:46

中文转换为UTF-8编码:
function ConvUtf(obj, btn) {
document.getElementById("result").value = obj.value.replace(/[^\u0000-\u00FF]/g, function ($0) { return escape($0).replace(/(%u)(\w{4})/gi, "&#x$2;") });
}
UTF-8编码转换为中文:
function ResChinese(obj, btn) {
document.getElementById("content").value = unescape(obj.value.replace(/&#x/g, '%u').replace(/;/g, ''));
}

热心网友时间：2022-04-23 07:37

匿名的那位是对的，代码当中确实有，这个应该是可以的：function ConvUtf(obj, btn) {document.getElementById(</FONT>"result").value = obj.value.replace(/[^\u0000-\u00FF]/g, function ($0) { return escape($0).replace(/(%u)(\w{4})/gi, "&#x$2;") });}</FONT>function ResChinese(obj, btn) {document.getElementById(</FONT>"content").value = unescape(obj.value.replace(/&#x/g, '%u').replace(/;/g, ''));} </FONT>转自http://blog.csdn.net/ji_gr/archive/2004/07/22/48813.aspx//--------把中文字符转换成Utf8编码------------------------//
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 "";
}