tryjsref_number_get 在线代码实例

 <h3>以下实例演示了如何访问 Number 字段</h3>

<input type="number" id="myNumber" value="2">

<p>点击按钮获取 number 字段的数字。</p>

<button onclick="myFunction()">点我</button>

<p id="demo"></p>

<script>
function myFunction() {
    var x = document.getElementById("myNumber").value;
    document.getElementById("demo").innerHTML = x;
}
</script>