简单教程
提交运行
代码编辑器:
<script> function displayResult(){ var x=document.getElementById("submit1").form.id; alert(x); } </script> <form id="form1"> Email: <input type="text" id="email"> <input type="submit" id="submit1"> </form> <button type="button" onclick="displayResult()">显示所属表单的ID</button>
运行结果: