BootWiki教程网
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>BootWiki 教程网</title> <script> function displayResult(){ var x=document.getElementById("button1").form.id; alert(x); } </script> </head> <body> <form id="form1"> <input id="button1" onclick="displayResult()" type="button" value="显示包含按钮的表单id"> </form> </body> </html>
运行结果