Call JavaScript function on DropDownList SelectedIndexChanged Event

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I have a java script:

JavaScript

<script type="text/javascript">

    function mycarousel_initCallback(carousel) {
        // Disable autoscrolling if the user clicks the prev or next button.
        carousel.buttonNext.bind('click', function () {
            carousel.startAuto(0);
        });

        carousel.buttonPrev.bind('click', function () {
            carousel.startAuto(0);
        });

        // Pause autoscrolling if the user moves with the cursor over the clip.
        carousel.clip.hover(function () {
            carousel.stopAuto();
        }, function () {
            carousel.startAuto();
        });
    };

    jQuery(document).ready(function () {
        jQuery('#mycarousel').jcarousel({
            auto: 2,
            wrap: 'last',
            initCallback: mycarousel_initCallback
        });
    });
   
</script>

This java script is put in master page and i want to call this java script in drop down selected index changed, dropdown is placed in user control So how can i do this plz help me

Posted 23-Dec-12 18:24pm

Arun kumar Gauttam

Updated 23-Dec-12 18:31pm

Krunal Rohit

v2

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Comments

bbirajdar 24-Dec-12 0:38am

use the 'onchange' client side event of dropdown to call the javascript

Arun kumar Gauttam 24-Dec-12 0:44am

sir plz put eject line then how i call "function mycarousel_initCallback(carousel)" and i pass "carousel" in that function, because with out parameter function is call easily,

3 solutions

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Sunny_Kumar_ · Answer 1 · 2012-12-23T19:57:00

Solution 1

Hi Arun,

Try using Response.Write() method for this but before this please ensure that the JS file is referenced properly in the output HTML.

JavaScript

Response.Write("<script>mycarousel_initCallback(carousel);</script>");

Hope this helps.
Happy Coding :)

Posted 23-Dec-12 19:57pm

Sunny_Kumar_

Updated 23-Dec-12 20:02pm

v2

Usman Khan Mohammad · Answer 2 · 2012-12-23T20:02:00

In your code behind write as below.

C#

protected void Page_Load(object sender, EventArgs e)
    {
        ddl.SelectedIndexChanged += new EventHandler(ddl_SelectedIndexChanged);
        if (!Page.IsPostBack)
        {
            ddl.Attributes.Add("onchange", "mycarousel_initCallback(ddl);");
        }
    }

    protected void ddl_SelectedIndexChanged(object sender, EventArgs e)
    {
       //Your Code
    }

And your ASPX will be like:

XML

<asp:DropDownList ID="ddl" runat="server"  AutoPostBack="true">
        <asp:ListItem Text="a" Value="a"></asp:ListItem>
         <asp:ListItem Text="b" Value="b"></asp:ListItem>
        </asp:DropDownList>

Sisir Patro · Answer 3 · 2013-05-06T23:08:00

Solution 3

Hi,

You can also do like this:

You can add the

C#

onchange="yourfunctionname()"

code to the dropdown and add the function in the script tag in the begining.

This is the best way to do...

Thanks

Posted 6-May-13 23:08pm

Sisir Patro