複製到一個html中就能使用，這裏小記錄一下。
<HTML>
<head>
<title>漢字轉unicode|unicode轉漢字</title>
<style type="text/css">
<!--
td {color: #FF9900}
A {
COLOR: #66CC22; TEXT-DECORATION: none
}
A:hover {
COLOR: #ff0000; TEXT-DECORATION: none
}
.gree {color: #66CC33}
.btn {font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 12px;
color: #666666;
text-align: left;
text-decoration: none;
display: block;
overflow: visible;
margin-right: 10px;
margin-left: 10px;
}
-->
</style>
</head>
<body >
<table width="728" height="54" border="0" align="center" cellpadding="0" cellspacing="1" >
<tr>
<td height="52"><table width="726" height="46" border="0" cellpadding="0" cellspacing="0">
<tr align="center">
<td>
<TABLE style="MARGIN-TOP: 6px" cellSpacing=0 cellPadding=0 width="100%" border=0>
<TR>
<TD width="774" vAlign=top style="PADDING-RIGHT: 6px; PADDING-LEFT: 6px"><h2 align="center"> unicode轉化漢字 漢字轉化unicode編碼</h2>
<hr size="1">
<CENTER>
<TEXTAREA name="source" cols="100" rows="14" id="source">\u7D2B\u964Cl\u7EA4\u5C18\u7684\u4E13\u680F\uFF0C\u6700\u7F8E\u4E0D\u8FC7\u5E73\u6DE1\uFF0C\u6700\u771F\u4E0D\u8FC7\u5E73\u51E1\u3002</TEXTAREA>
</CENTER>
<BR>
<CENTER>
<table width="400" border="0" cellspacing="2">
<tr>
<td><span class="btn"><a href="javascript:action('CONVERT_FMT1')"> <strong>轉化成爲：<br>
</strong>&#xxxx </a></span></td>
<td><span class="btn"><a href="javascript:action('CONVERT_FMT2')"> <strong>轉化成爲unicode字符：<br>
</strong> \uxxxx </a></span></td>
<td><span class="btn"><a href="javascript:action('RECONVERT')"> <strong>轉化爲漢字：<br>
</strong> ::WV </a></span></td>
</tr>
</table>
<p>
<div id="tt" style="display:none"></div>
<textarea name="show2" rows="14" id="show2" cols="100"></textarea>
</p>
<P style="MARGIN-TOP: 0px"> </P>
</CENTER></TD>
<TD noWrap width=1></TD>
</TR>
</TABLE>
</td>
</tr>
</table></td>
</tr>
</table>
<br>
</BODY>
<script language="javascript" type="text/javascript">
var oSource = document.getElementById("source");
var oShow2 = document.getElementById("show2");
var oTt = document.getElementById("tt");
function action(pChoice){
switch(pChoice){
case "CONVERT_FMT1":
oShow2.value = ascii(oSource.value);
break;
case "CONVERT_FMT2":
oShow2.value = unicode(oSource.value);
break;
case "RECONVERT":
oShow2.value = reconvert(oSource.value);
break;
}
}
function ascii(str){
return str.replace(/[^\u0000-\u00FF]/g,function($0){return escape($0).replace(/(%u)(\w{4})/gi,"\&#x$2;")});
}
function unicode(str){
return str.replace(/[^\u0000-\u00FF]/g,function($0){return escape($0).replace(/(%u)(\w{4})/gi,"\\u$2")});
}
function reconvert(str){
str = str.replace(/(\\u)(\w{4})/gi,function($0){
return (String.fromCharCode(parseInt((escape($0).replace(/(%5Cu)(\w{4})/g,"$2")),16)));
});
str = str.replace(/(&#x)(\w{4});/gi,function($0){
return String.fromCharCode(parseInt(escape($0).replace(/(%26%23x)(\w{4})(%3B)/g,"$2"),16));
});
return str;
}
</script>
</HTML>
