What is the best way to invoke a JavaScript function after an event or from a user interface?

I am struggling to call a JavaScript subroutine on the client-side after the server has completed its task. Even though I have tried putting breakpoints in <% ... %> areas between <script...> and </script>, it seems that VS2010 does not allow me to do so. This is making it difficult for me to understand how things are running. In my view, I have included the necessary JavaScript code for the function to run, however, it is not being executed as expected.

I just need to execute the "RunOnceRoutines;" but it is not happening!

My main concerns are: How can we effectively call JavaScript functions from the server-side, and why am I unable to find the JavaScript debugging feature that was available since VS2008?


    <%@ Control Language="VB" Inherits="System.Web.Mvc.ViewUserControl(Of FP.RatePicModel)" %>

<script type="text/javascript" language="javascript">
        var RatePicPanelRunCount = 0;

        function ChangeMainPic(newSrc) {
        $get("imgPic").src = newSrc;
        alert($get("imgPic").src + '\n' + newSrc);
        RatePicPanelRunCount++;
        }

...

Answer №1

It appears that there are syntax errors causing the JavaScript to malfunction before reaching the function call. Have you reviewed your debug output? Using the Firebug plugin for Firefox can be very helpful for this.

Update: To enable JavaScript debugging in Internet Explorer, it is necessary to configure it in the internet explorer settings. You can refer to this link for more information.

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