JS按回车追踪按钮提交表单

 1    <script language="javascript" type="text/javascript">
 2 //page 有两个button，两个textbox，回车触发第二个button
 3        var x = document.getElementById('<%=Textbox1.ClientID %>'); //获取控件对象
 4        x.onkeydown = txtsubmit;
 5 
 6        var y = document.getElementById('<%=TextBox2.ClientID %>'); 
 7        y.onkeydown = txtsubmit;
 8 
 9        function txtsubmit() {
10            var e = event.srcElement;
11            if (event.keyCode == 13) {
12                document.getElementById('<%=Button2.ClientID %>').click(); //提交按钮Button2
13                return false;
14            }
15        }
16 </script>