<!DOCTYPE html>
<html>
<body>
<input type="month" id="myMonth">
<p>点击按钮设置 month 字段为只读。</p>
<p><strong>提示：</strong> 在点击按钮之前后之后再 month 字段中输入数据查看效果。</p>
<button onclick="myFunction()">点我</button>
<p id="demo"></p>
<script>
function myFunction() {
document.getElementById("myMonth").readOnly = true;
}
</script>
</body>
</html>
