复制代码代码如下:
<Html>
<head>
<Title> dokumen baru </iteme>
<meta name = "generator" content = "editplus">
<meta name = "penulis" konten = "">
<meta name = "kata kunci" content = "">
<meta name = "description" content = "">
</head>
<bahasa skrip = "javascript">
function isreadonly () {
var obj = document.geteLementById ("nama pengguna");
obj.setAttribute ("readonly", true);
obj.style.backgroundcolor = "#d2d2d2";
}
fungsi readwrite () {
var obj = document.geteLementById ("nama pengguna");
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 = "tombol" name = "只读" value = "baca" ontClick = "isReadOnly ();">
<input type = "tombol" name = "可写" value = "write" onclick = "readWrite ();">
</form>
</body>
</html>
<!-
点击 “baca” 按钮 ， input 框不能书写 ， 且变灰；点击 “tulis” 按钮 ， input 框恢复。
->