RadCombo box how to find selectedIndex

[SIP IT]

Hi Telerik,
I tried to find the text from combobox doesn't work using the normal dropdownlist javascript as below

<telerik:RadScriptBlock ID="rsbAction" runat="server">

    <script type="text/javascript">
        function action(sender, args) {
            var rcbCategory = document.getElementById('<%=rcbCategory.ClientID %>');
            var result = false;

            if (rcbCategory != null)
                if (rcbCategory.selectedIndex > 0)
                    result = true;
            args.IsValid = result;
        }

    </script>

</telerik:RadScriptBlock>
I as well tried the code provided by the sample also doesn't work as below :

<telerik:RadScriptBlock ID="RadScriptBlock1" runat="server">
    <script type="text/javascript">
        function category(sender, args) {
            var result = false;
            var rcbCategory = $find("<%=rcbCategory.ClientID %>");
            var rcbCategoryText = rcbCategory.get_text();

            if (rcbCategoryText.Length > 1) {
                var node = rcbCategory.findItemByText(rcbCategoryText);
                if (node) {
                    var value = node.get_value();
                    if (value.length > 0 && value % 2 == 0)
                        result = true;
                }
            }
            args.IsValid = result;
        }
    </script>

</telerik:RadScriptBlock>

Thank you.

[Shinu]

Hello,

You can attach the client event OnClientSelectedIndexChanged and access the Text value.
JS:

<script type="text/javascript">
function OnClientSelectedIndexChanged(sender, args)
 {
    alert(args.get_item().get_text());
 }
</script>

Also check the following help documentation.
Client-Side Basics

-Shinu.

[Bozhidar]

Hello,

You can also access the selected item from an arbitrary function. Here's a sample code, where the selected item text is alerted whenever the user clicks a button:

<form id="form1" runat="server">

<telerik:RadScriptBlock ID="RadScriptBlock1" runat="server">
    <script type="text/javascript">
        function clientFunction() {
            var combo = $find("<%= RadComboBox1.ClientID %>");
            alert("Index: " + combo.get_selectedIndex() + ", Text: " + combo.get_selectedItem().get_text());
        }
    </script>
</telerik:RadScriptBlock>

<div>
    <asp:ScriptManager ID="ScriptManager1" runat="server" />
    <telerik:RadComboBox ID="RadComboBox1" runat="server">
        <Items>
            <telerik:RadComboBoxItem Text="item one" />
            <telerik:RadComboBoxItem Text="item two" />
            <telerik:RadComboBoxItem Text="item three" />
            <telerik:RadComboBoxItem Text="item four" />
            <telerik:RadComboBoxItem Text="item five" />
            <telerik:RadComboBoxItem Text="item six" />
            <telerik:RadComboBoxItem Text="item seven" />
        </Items>
    </telerik:RadComboBox>
    <br />
    <asp:Button ID="Button1" runat="server" OnClientClick="clientFunction()" Text="Button" />
</div>
</form>

  
Kind regards,
Bozhidar
the Telerik team

[SIP IT]

Hi Bozhidar,

Thank for you help for on getting the selectedIndex my custom validator work using this script

<telerik:RadScriptBlock ID="rsbCategory" runat="server">
    <script type="text/javascript">
        function category(sender, args) {
            var result = false;
            var rcbCategory = $find("<%=rcbCategory.ClientID %>");
            var rcbCategoryIndex = rcbCategory.get_selectedIndex();

            if (rcbCategoryIndex > 0)
                result = true;

            args.IsValid = result;
        }
    </script>
</telerik:RadScriptBlock>

[Arun]

this worked for me: $find("<%= dropdownId.ClientID %>").get_selectedItem().get_index()

[Vaibhav]

I am using checkbox =true in my radcombobox,I want to get checked item index in javascript.I am using OnClientItemChecked="OnClientItemChecked"  can anyone  help me??