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複製代碼 代碼如下:
<html>
<head>
<title> New Document </title>
<meta name="Generator" content="EditPlus">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
</head>
<script language="JavaScript">
function isreadonly(){
var obj = document.getElementById("username");
obj.setAttribute("readOnly",true);
obj.style.backgroundColor="#d2d2d2";
}
function readwrite(){
var obj = document.getElementById("username");
obj.setAttribute("readOnly",false);
obj.style.backgroundColor="#ffffff";
}
</script>
<body>
<form name="addform" id="addform" method="post" action="" >
<input type="text" id="username" name="username">
<input type="button" name="唯讀" value="read" onclick="isreadonly();">
<input type="button" name="可寫" value="write" onclick="readwrite();">
</form>
</body>
</html>
<!--
點擊“read”按鈕，input框不能書寫，且變灰；點擊“write”按鈕，input框恢複。
-->
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