How to select Listbox item via Javascript Jquery

I have a asp.net ListBox control on a page, that has nothing selected.

I will display a generated TABLE that includes a Javascript ONCLICK event to call a JS function to select that item.

Generated onclick event for the row:
onclick=\"addListbox('" + row.Channel_ID.ToString() + "')"

Open in new window


the JS:
<script type="text/javascript">
    function addListbox(selectedItem)
    {
        $("#ddChannels option[value='" + selectedItem + "']").attr("selected", true);
    }
</script>

Open in new window


Just for reference, the listbox:

<asp:ListBox ID="ddChannels" runat="server" CssClass="chzn-select" SelectionMode="Multiple"></asp:ListBox>

Open in new window


This ListBox is populated by the code behind...

But it doesn't seem to be working.
adworldmediaCTOAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

leakim971PluritechnicianCommented:
try this :
<script type="text/javascript">
    function addListbox(selectedItem)
    {
        //$("#ddChannels option[value='" + selectedItem + "']").attr("selected", true);
        $("#ddChannel")val(selectedItem);
    }
</script>

Open in new window

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Shahzad Fateh AliWeb Solutions Architect & Technical Project Manager- VentureDive (Pvt) LtdCommented:
There are 2 ways of doing this thing.

<script type="text/javascript">
    function addListbox(selectedItem)
    {
        $("#ddChannels option[value=" + selectedItem + "]").attr("selected", "selected");
        
    }
</script>

Open in new window


Or

<script type="text/javascript">
    function addListbox(selectedItem)
    {
        $("#ddChannel").val(selectedItem);
        
    }
</script>

Open in new window

0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
jQuery

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.