Setting text and value via Javascript

4 posts, 0 answers
  1. Jeremy Yoder
    Jeremy Yoder avatar
    131 posts
    Member since:
    Dec 2009

    Posted 20 Nov 2012 Link to this post

    On webpage load, I populate a RadComboBox with text and keys. I have a default value I assign then on server-side too.

    If they click a button to clear the form, I blank out all controls, but populate defaults. I need to do it client-side, and I'm having trouble with RadComboBox. I thought I'd populate a hidden field with the RadComboBox's default text on server-side during the load, then assign that value client-side when needed. I've tried both set_text (and set_value with the hidden field holding the default value instead) but when it evaluates later, it appears either the text is right but the value isn't, or vice versa.

    Do I have to track in 2 hidden fields (both  default text and default value) and assign both client-side? That seems goofy, but if so, in what order should it be done? Or can I do this without tracking both the text and value default?

    Example javascript code would be very welcome, assuming the hidden fields are populated... unless I should do it a completely different way.

  2. Kevin
    Kevin avatar
    360 posts
    Member since:
    Jul 2012

    Posted 20 Nov 2012 Link to this post

    Hello Jeremy,

    If you're changing anything on the RadComboBox from the client-side you need to call the trackChanges and commitChanges methods, in order for the state of the RadComboBox to persist on the server-side.

    You code should look like this:

    var combo = $find("<%=RadComboBox1.ClientID%>");

    I hope that helps.
  3. Jeremy Yoder
    Jeremy Yoder avatar
    131 posts
    Member since:
    Dec 2009

    Posted 26 Nov 2012 Link to this post

    This javascript changes the value of the combobox, but the text value displayed does NOT change. I need both to change, or the display conflicts with the actual value.
  4. Nencho
    Nencho avatar
    1890 posts

    Posted 29 Nov 2012 Link to this post

    Hi Jeremy,

    I can suggest you to store both the text and the value of the default item in the HiddenField. You could use a comma as separator and split them in client-side, in order to access the text and the value. I have prepared a sample project for you demonstrate you the suggested approach. Please find the sample attached.

    the Telerik team
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