Hello, I am currently utilizing telerik rad controls for asp.net. I need to clear the inputs using javascript, but the telerik controls (such as radcombobox) generate a large amount of markup. Can someone please advise on how to clear telerik controls on a page in client-side?
Thank you
Here is a straightforward example that may spark some ideas for you to move forward. I have made sure to clear the textboxes in this demonstration.
<Items>
<telerik:RadComboBoxItem Text="Oragnes" Value="1" />
</Items>
<Items>
<telerik:RadComboBoxItem Text="Apples" Value="2" />
</Items>
<Items>
<telerik:RadComboBoxItem Text="Bananas" Value="" />
</Items>
</telerik:RadComboBox>
<telerik:RadTextBox ID="rdTextBox" runat="server" ></telerik:RadTextBox>
<telerik:RadTextBox ID="RadTextBox1" runat="server" ></telerik:RadTextBox>
<telerik:RadTextBox ID="RadTextBox2" runat="server" ></telerik:RadTextBox>
<br />
<input type="button" onclick="ClearRadControls()" value="Clear Rad Controls" />
<script language="javascript" type="text/javascript">
function ClearRadControls()
{
var radControl1TextBox = document.getElementById("<%=rdTextBox.ClientID %>" + "_text");
var RadTextBox1 = document.getElementById("<%=RadTextBox1.ClientID %>" + "_text");
var RadTextBox2 = document.getElementById("<%=RadTextBox2.ClientID %>" + "_text");
radControl1TextBox.value = '';
RadTextBox1.value = "";
RadTextBox2.value = "";
}
</script>
Telerik's documentation for the ASP.NET RadControls can be somewhat helpful. You can find it here:
http://www.telerik.com/help/aspnet-ajax/introduction.html
Regarding your question about the combobox:
You can utilize Telerik's $find function to retrieve the telerik object of the control. This way, you can access and make use of the client-side functions that are already integrated into the controls.
function ClearSelection() {
var combo = $find("<%= yourCombo.ClientID %>");
combo.clearSelection();
}
http://www.telerik.com/help/aspnet-ajax/combobox-client-side-radcombobox.html
If you want to retrieve the telerik object of a control, you can utilize telerik's $find function.
<script type="text/javascript>
function Something() {
//...
$find("$yourCombo.ClientID").clearSelection();
//...
}
</script>
telerik offers helpful documentation for ASP.NET radcontrols which can be found here:
http://www.telerik.com/help/aspnet-ajax/introduction.html
http://www.telerik.com/help/aspnet-ajax/combobox-client-side-radcombobox.html
Although it may slightly deviate from the main topic, the JavaScript framework Dojo could offer valuable assistance. Take a look at this code snippet that effectively unchecks all checkboxes dynamically generated on the page.
> // Unchecking child checkboxes
> dojo.forEach(
> dojo.query("input[type='checkbox']",
> subList),
> function(checkboxTag) {
> checkboxTag.checked = false;
> }
> );
While browsing through a blog, I came across a JavaScript solution that caught my attention.
In the sample code, I was looking for a specific div item named "sampleDivInGrid" within a RadGrid.
function GetServerElement(serverID, tagName) {
if (!tagName)
tagName = "*"; //* denotes all elements
var grid = document.getElementById("<%=grdItems.ClientID %>");
var elements = grid.getElementsByTagName(tagName);
for (var i = 0; i < elements.length; i++) {
var element = elements[i];
if (element.id.indexOf(serverID) >= 0)
return element;
}
}
function OnClientIndexChanged(sender, eventArgs) {
var itm = GetServerElement("sampleDivInGrid", "div");
var item = eventArgs.get_item();
var itmTxt = item.get_text();
alert(itmTxt);
}
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