<html>
<head>
<title> New Document </title>
<meta content="EditPlus">
<meta content="">
<meta content="">
<meta 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 method="post" action="" >
<input type="text">
<input type="button" value="read">
<input type="button" value="write">
</form>
</body>
</html>
<!--
点击“read”按钮，input框不能书写，且变灰；点击“write”按钮，input框恢复。
-->
js控制input框只读实现示例
内容版权声明：除非注明，否则皆为本站原创文章。