Javascript - Difference Between Onclick() And OnClientClick()?
Jul 27, 2010
If I use both onclick() and onClientClick() can I make sure that server side will be called only after client side function returns TRUE or vice versa?
For example:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Import Namespace="System.Xml" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<%
protected void save_n_display(object sender, EventArgs e)
{
// This must be called when validate() returns true...
}
%>
<asp:Button ID="Button1" OnClientClick="validate()" onClick="save_n _display" "Text="Check" runat="server" />
<script type="text/javascript" language="javascript">
function validate() // client side Validation is done
{
}
</script>
So can I use onclick() and onClientClick() or do I need something different for this? I even tried passing variables from javascript to asp functions so when validate returns true then save_n _display will be called.
and when I click my button, it is disabled for 1-2 seconds and automatically enabled, but I am not sure why it is enabled. I didn't add any part for it to be enabled again.
I have an imagebutton with an postbackurl and an onclientclick script. When i added the onclientclick code, if my javascript validation passes (aka returns true), the page just seems to perform a postback (the screen just seems to refresh
I decided to change what JS functions Im calling now since calling Multiple functions definately wasnt helping. Here's my updated code. All Im doing now is validating a single textbox and returning true or false. Even this simple function is causing the postback URL to never get called. Could it have anything to do with the fact that Im trying to call a function to return a true or false?
I have a linkbutton whose onclick method does not fire after a jquery drag and drop, the onlclientclick does work. Y would the server side code not work only after a jquery drag and drop?
I've read that OnClick is executed on the server and onClientClick is executed on the client. Is it better to use OnClientClick to do something like close a modal popup?
If my understanding is correct then this would avoid a trip to the server to accomplish the same task. This would be great for something that doesn't need to make a round trip to the server and back.
The OnClientClick code disables the button so that the user cannot submit more than once. It also changes the text of the button to "Please wait..."
Trouble is, because it is getting disabled the "Please wait..." text looks rubbish... How can I style the button so that even though it is disabled, it looks enabled, within javascript.
<script type="text/javascript"> function btnSubmit_ClientClick(Client) { var ok = Page_ClientValidate(); if (ok) {
<asp:Button ID="test" runat="server" Text="test" OnClientClick="pageTracker._trackPageview('/bezichtigingsform/deeplink')" /> The OnClientClick-attribute is rendered as: onclick="pageTracker._trackPageview('/bezichtigingsform/deeplink')"
When I try to escape the single-quote like this "'" or with a double backslash preceeding the single quote, this does not work. I also tried it like this:
I have a button inside my <ItemTemplate> in GridView and I want to call a javascript function on the OnClientClick of that button passing the DataItem value as a parameter of the javascript function
[code]....
If I will not put a parameter in CreateEditAddess() this works well but I need the parameter.
I know I can put the OnClientClick event value in OnRowDataBound event of the gridview but I don't want to put it in CodeBehind. It seems like the server tag is not parsed correctly.
Void button has a confirm box after receiving true, expecting running another button's click event however, Void2_Button_Click not run, where is wrong?
protected void Void2_Button_Click(object sender, EventArgs e) { // do something } Void_Button.Attributes.Add("onclick", "var agree=confirm('Confirm to void?'); if (agree){document.getElementById('Void2_Button').click();}");
On Firefox it does what it supposed to. But it won't work on IE or Chrome.I know there are some questions on the subject here, but they haven't helped me. I'm guessing it's more specific since it envolves ASP.NET postback.
I have a server control button , btnProcessTransaction, which calls a method to run a stored procedure in the DB, I need to add another onclick to call a javaSCript funtion , how can i do both calls for the same button. Here is my code before applying the javaScript call>
I have 2 textboxes which has default values in forecolor:#999999. If I click on the textbox, the default value should clear and the forecolor should change to black. I mean, like watermarking. But I am not using any Ajax.
i am working in MVC & want to add a javascript file only in when the 'onclick' event is fired for actionlink... ie. by default a javascript file is not included in my project... but when the actionlink button is clicked then only the javascript file shud be added..
However the onclick does not fire the ListView.Command or ListView.SelectedIndexChanging event? If I add a button with CommandName="Select" it works as expected? The POST data is the same!
i have a navigation bar made up of ImageButtons that have their image swapped out on mouse over and back on mouse out. i used this code in the Page_Load handler to do this:
Note: The answer marked as the answer, answers the questions in the Title. However, my underlying problem, using type ahead dropdowns, is solved by moving to IE8.
I have a drop down list that when I CLICK a NEW selection I want to cause a postback ("this.form.submit()") But only if the click on the dropdown list just changed the selection.
Note that OnChange will NOT work because when the selection is changed by the keyboard I would not want to postback because it is a type ahead dropdown list.
I also suppose I could use OnChange and check if the change was caused by the mouse.
Maybe if we can come up with both solutions and i'll see which works better?
EDIT: More information:
AutoPostback = true; will not work. (don't want it to post back when the selection is changed by the keyboard)
onBlur = doPostBack; I tried this, but the result is not optimal. The user has to click off the ddl after making a selection with the mouse.
Another way to state what I want to do, i think, is do a postback when both the OnChange and OnClick events fire at the same time.
So, I have a MasterPage, in which I have an ImageButton and an UpdatePanel. Inside the UpdatePanel I have a LinkButton.
[Code]....
As you can see, both components are asociated to the same OnClick event, which should open said PDF document in a new window using javascript (Code Behind of the MasterPage):
[Code]....
I build the path using the toolTip of the component that has been clicked,which has the name of the file that should load in the
new window.
When I run the application, and click the ImageButton, the new window opens and the file loads correctly. However, when I click the LinkButton, nothing happens (it should do exactly the same as the ImageButton).
If I set a breakpoint, and debug, when I click the LinkButton, it goes to the LnkRelease1 event (as it should), everything looks fine, but it doesnt open the new window, It doesn't execute the javascript window.open.
when i click on the textbox which is inside the item template of gridview then onclick event should fire and then call the javascript function but my problem is that there no onclick event option in item template's textbox
<asp:RadioButton GroupName="grpAssoc" ID="rbtEvery" runat="server" Text="Everyone" onclick="return doChangeAssociationType(0);" AutoPostBack="True" oncheckedchanged="rbtEvery_CheckedChanged" /> but oncheckedchanged="rbtEvery_CheckedChanged" not firing even javascript function returns true
I have developed a web application which contains aspdotnet treeview control. In this treeview control has binded with some database value.. that controls has one parent node and more than one child nodes for each parent node.
my problem is here, when the user clicks the parent node, I need to fire a javascript onclick function before the server side event(SelectedNodeChanged) called..
If I provide javascript to the parnet node when it is binding, then I could not fire the server side event(SelectedNodeChanged).
How to provide onclick javascript event for parent node in treeview control even the parent node has SelectedNodeChanged event.
