How to communicate between two aspx pages using js?
Question
I have two aspx pages namely one.aspx and two.aspx and i have a javascript file named link.js
Now i need to communicate between this two aspx pages using javascript file as intermediate.
In one.aspx file i am having an ModalPopupExtender and the content of its panel is loacted in two.aspx ie, in "one.aspx" :
<html>
<head>
<script type="text/javascript" src="link.js"></script>
<script type="type="text/javascript">
function test(){
var str=callPopup();
document.getElementById('pnlPopUp').innerHtml = str;
}
</script>
</head>
<body>
<ajaxToolkit:ModalPopupExtender ID="popup1" runat="server" TargetControlID="btnOK" CancelControlID="btnCancel" PopupControlID="pnlPopUp"></ajaxToolkit:ModalPopupExtender>
<asp:Panel ID="pnlPopUp" runat="server"></asp:Panel>
</body>
</html>
in "two.aspx" :
<html>
<head>
<script type="text/javascript" src="link.js"></script>
</head>
<body>
<asp:Panel ID="pPanel1" runat="server">
<table>
<tr>
<td>
<p>test</p>
</td>
<td>
<asp:Button ID="BtnTest" runat="server" Text="Click" OnClientClick="javascript:alert('hello world..!'); return false;" />
</td>
</tr>
</table>
</asp:Panel> </body> </html>
in link.js:
function callPopup() {
var s = document.getElementById('pPanel1').innerHtml;
return s;
}
i am able to call callPopup() from one.aspx but unable to get the content from two.aspx page. please help me.
Thanks in advance.
2 answers
solution1
0 2012-08-06 05:31:09
I'll give you 2 ways to accomplish this.
Use SignalR to broadcast to multiple clients. Read more at https://github.com/SignalR/SignalR
(more low level. SignalR usually takes care of all of this for you)
Try using Ajax to call a function server side: http://www.w3schools.com/ajax/default.asp . You can then have the function that is called server side write to some output source; Some examples: file, session, cookie.
Then have the other web page constantly reading from that same output (the file, session or cookie) source via Ajax.
solution2
0 2012-08-07 18:03:28
Are you sure that your architecture is correct? Is there really a good reason why you need two.aspx - can't one.aspx do it all?
Having used the AjaxToolkit in the past, I struggle to think of a good reason to use it in modern web development. Have you looked at http://knockoutjs.com/ or Backbone ? They are really worth a look.
I know this doesn't answer your question per se , I'm just trying to save you from a world of pain.
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