JavaScript中encodeURI与decodeURI函数的字符串编码与解码应用

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>使用系统函数</title>
<script language="JavaScript">
<!--
 function showMsg()
 {
  var strURL= url.value;
  var encodeStr = encodeURI(strURL);
  var temp = encodeStr+"\n";
  temp += decodeURI(encodeStr);
  alert(temp);
 }
-->
</script> 
</head>
<body>
<div>
  请输入一个URL：<input name="url" type="text" id="url" value="/search.php?keyword=搜索关键字" size="60" />
  <input type="submit" name="button" id="button" value="我要提交" onclick="showMsg();" /></div>
 <dIV class="vc" style="margin: 20px auto" >
<h2>使用encodeURI()和decodeURI()函数：</h2>
</dIV>
</body>
</html>