<!DOCTYPE html>
<head>
<meta charset="utf-8">
<title>W3Cschool教程(w3cschool.cn)</title>
</head>
<html>
<body>
<form>
地址:<br>
<textarea id="mytxt">
342 Alvin Road Ducksburg</textarea>
</form>
<p>单击下面的按钮禁用文本区域</p>
<button onclick="disableElement()">禁用文本区域</button>
<script>
function disableElement(){
document.getElementById("mytxt").disabled=true;
}
</script>
</body>
</html>
