1<head runat="server">
2 <title></title>
3 <script type="text/javascript">
4 window.addEventListener('load', function () {
5 var submitbtn = document.createElement("INPUT");
6 submitbtn.setAttribute("id", "button2");
7 submitbtn.type = "submit";
8 submitbtn.value = "SUBMIT2";
9 submitbtn.addEventListener("click", postbackfunction);
10 document.getElementById('form1').appendChild(submitbtn);
11
12 });
13
14 function postbackfunction() {
15 console.log("Heihei");
16 __doPostBack("submit", "");
17 }
18 </script>
19</head>
20<body>
21 <form id="form1" runat="server">
22 <asp:ScriptManager ID="ScriptManager1" runat="server">
23 </asp:ScriptManager>
24 <div>
25 <asp:Button ID="button1" runat="server" OnClick="button1_Click" Text="SUBMIT1" />
26
27 <asp:TextBox ID="text1" runat="server"></asp:TextBox>
28 </div>
29 </form>
30</body>