JavaScript DOM操作案例点击按钮禁用文本框
<!DOCTYPE html>
<html >
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<input type="button" value="禁用文本框" />
<input type="text" value="我是文本框" />
<script>
document.getElementById("bt").onclick = function () {
document.getElementById("tex").disabled = "disabled";
};
</script>
</body>
</html>