JavaScript实现Unicode与ASCII相互转换的方法

<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>Unicode、ASCII相互转换</title>
<script type="text/javascript">
//AsciiToUnicode("中国");
UnicodeToAscii("&#27979;&#35797;");
//ASCII 转换 Unicode
function AsciiToUnicode(content) {
  result = '';
  for (var i=0; i<content.length; i++)
  result+='&#' + content.charCodeAt(i) + ';';
  alert("ASCII："+content+"\nUnicode："+result);
}
//Unicode 转换 ASCII
function UnicodeToAscii(content) {
  var code = content.match(/&#(\d+);/g);
  result= '';
  for (var i=0; i<code.length; i++)
  result += String.fromCharCode(code[i].replace(/[&#;]/g, ''));
  alert("Unicode："+content+"\nASCII："+result);
}
</script>
</head>
<body>
</body>
</html>