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Last post 11-19-2008 11:17 AM by davey_b. 5 replies.

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Links and postbacks

11-18-2008, 5:00 PM

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davey_b
Joined on 06-14-2004, 7:20 AM
Posts 69
Points 53

Hello,

I'm trying to have a popup window on my site without having the link I click on to open the popup cause a postback. I've tried server-side hyperlinks and linkbuttons (which both postback by default) setting the onclick event to return false and had enabled = false on both of the them but the postback still occured.

Now I'm trying just a plain html anchor tag:

<a onclick="return LoadHelp();">click me</a>

With this javascript:

function LoadHelp() {

var newWin = window.open("scrhelp.aspx", "Help", "location=0,status=0,scrollbars=1,width=400,height=400");
newWin.focus();
return false;
}

And I still have a postback occurring. Any ideas as to what I can do to prevent the page from posting back?

Thanks!

Re: Links and postbacks

11-18-2008, 6:01 PM

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vlad322
Joined on 10-23-2007, 6:15 AM
Posts 98
Points 317

try onclick="javascript:LoadHelp();"

and forget the "return false" in the function

Re: Links and postbacks

11-18-2008, 6:46 PM

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davey_b
Joined on 06-14-2004, 7:20 AM
Posts 69
Points 53

Thanks for your replay vlad322. I thought for sure that would work, I actually LOL'd when I saw that I didn't have the "javascript:" in front of my function.

When I load the page and click the link a postback occurs, however it doesn't postback on any subsequent clicks, it only postbacks once.

Re: Links and postbacks

11-18-2008, 9:25 PM

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x-format
Joined on 08-26-2008, 9:59 PM
Posts 266
Points 1,663

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
    <script type="text/javascript">

function LoadHelp() {
    var newWin = window.open("scrhelp.aspx", "Help", "location=0,status=0,scrollbars=1,width=400,height=400");
    newWin.focus();
}

    </script>
</head>
<body>
    <a href="#" onclick="javascript: LoadHelp(); return false;">Click for help</a>
</body>
</html>

no postback here...

Simply JS | june blog

Re: Links and postbacks

11-19-2008, 10:58 AM

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NC01
Joined on 08-26-2005, 3:33 PM
Posts 13,275
Points 71,391

According to his description, I think that something else is causing the PostBack, because it certainly does not happen for me. I tried server-side HyperLinks and LinkButtons setting the onclick event to return false and also tried anchor tags with no PostBacks whatsoever.

NC...

Re: Links and postbacks

11-19-2008, 11:17 AM

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davey_b
Joined on 06-14-2004, 7:20 AM
Posts 69
Points 53

Thanks guys, I've made a new page here and don't have postbacks either. It must be something else on the page causing it.

Cheers.

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