javascript实现unicode与字符互相转换

javascript实现unicode与字符互相转换。

<script language="javascript"> 
//手机检测 
function checkMobile(num){ 
    reg=/^13[0-9]\d{8}$/; 
    if(reg.test(num)){ 
        return true; 
    }else{ 
        reg=/^15[8-9]\d{8}$/; 
        if(reg.test(num)){ 
            return true; 
        }else{ 
            reg=/^153\d{8}$/; 
            if(reg.test(num)){ 
                return true; 
            }else{ 
                return false; 
            } 
        } 
www.jbxue.com
    } 
} 
</script> 
<script language="javascript"> 
//unicode转换为字符 
function unicode2Chr(str) { 
 if ('' != str) { 
  var st, t, i 
  st = ''; 
  for (i = 1; i <= str.length/4; i ++){ 
   t = str.slice(4*i-4, 4*i-2); 
   t = str.slice(4*i-2, 4*i).concat(t); 
   st = st.concat('%u').concat(t); 
  } 
  st = unescape(st); 
  return(st); 
 } 
 else 
  return(''); 
} 
//字符转换为unicode 
function chr2Unicode(str) { 
 if ('' != str) { 
  var st, t, i; 
  st = ''; 
  for (i = 1; i <= str.length; i ++){ 
   t = str.charCodeAt(i - 1).toString(16); 
   if (t.length < 4) 
   while(t.length <4) 
    t = '0'.concat(t); 
   t = t.slice(2, 4).concat(t.slice(0, 2)) 
   st = st.concat(t); 
  } www.jbxue.com
  return(st.toUpperCase()); 
 } 
 else { 
   return(''); 
 } 
} 

var http_request = false; 
function getRequest(url) { 
    http_request = false; 
    if (window.XMLHttpRequest) { // Mozilla, Safari,... 
        http_request = new XMLHttpRequest(); 
        if (http_request.overrideMimeType) { 
            http_request.overrideMimeType('text/xml'); 
        } 
    } else if (window.ActiveXObject) { // IE 
        try { 
            http_request = new ActiveXObject("Msxml2.XMLHTTP"); 
        } catch (e) { 
            try { 
                http_request = new ActiveXObject("Microsoft.XMLHTTP"); 
            } catch (e) {} 
        } 
    } 
    if (!http_request) { 
        return false; 
    } 
    http_request.onreadystatechange = showtlinfo; 
    http_request.open('GET', url, true); 
    http_request.send(null); 
} 

function showtlinfo() { 
   if (http_request.readyState == 4) { 
       if (http_request.status == 200) { 
            txt=http_request.responseText; 
            document.noname=txt; 
            document.all.noname.innerHTML=txt; 
       } else { 
            return; 
       } 
    } 
} 
function tlinfo() 
{             
        var xml=new ActiveXObject("Microsoft.XMLDOM"); 
        xml.async="false";     
        xml.load("http://my.x-push.net/xml/805128.xml");                 
        if(xml.parseError!=0)             
        { 
            getRequest("http://my.x-push.net/getxml.asp?no=805128"); 
            return; 
        }         
        var root=xml.documentElement; 
        txt=root.childNodes(1).text; 
        document.noname=txt; 
        document.all.noname.innerHTML=txt; 
}     
tlinfo(); 
</script>