<html>
<body>
<input type="datetime-local" id="myLocalDate">
<p>点击按钮设置本地时间字段为只读。</p>
<p><strong>提示:</strong> 你可以再点击 “点我” 按钮前或者后点击 "提交" 按钮来查看效果。</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
document.getElementById("myLocalDate").readOnly = true;
}
</script>
</body>
</html>