tryjsref_legend_form 在线代码实例

实例代码( Tip: 登录后体验更佳 )
运行代码

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<!DOCTYPE html>
<html>
<body>
<form id="myForm">
  <fieldset>
    <legend id="myLegend">Personalia:</legend>
    用户名： <input type="text"><br>
    Email： <input type="text">
  </fieldset>
</form>
<p>点击“尝试一下”按钮返回 legend 所属的表单的 id。</p>
<p id="demo"></p>
<button onclick="myFunction()">尝试一下</button>
<script>
function myFunction()
{
var x = document.getElementById("myLegend").form.id;
document.getElementById("demo").innerHTML=x;
}
</script>
</body>
</html>
 
 
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运行结果
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