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Programmatically click a button using JavaScript (on an ASP.net-based website)

Posted on 2011-10-16
Medium Priority
Last Modified: 2012-05-12
I have an ASP.net (VB) website.  I need to create a JavaScript function that would mimic the act of clicking an image button -- i.e. activate the subroutine that is triggered by clicking the button.

Here is the ASP.net code for the button.  As you can see, clicking the button activates the "GoCheckout" subroutine.  That is what I need a JavaScript function to do.

<asp:ImageButton ID="btnCheckOut" runat="server"  AlternateText="Checkout" onClick="GoCheckout"/>

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Here is what the code for the button looks like at runtime:
 <input type="image" name="ctl00$ContentPlaceHolder1$btnCheckOut" id="ctl00_ContentPlaceHolder1_btnCheckOut" src="/images/checkout.png" alt="Checkout"  />

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Any assistance would be appreciated.

Question by:Jorhal
LVL 83

Accepted Solution

leakim971 earned 2000 total points
ID: 36977461
Use :


or :

document.getElementById("<%= btnCheckOut.ClientID %>").click();

Expert Comment

ID: 36977574
The javascript function below "GoCheckout()" will trigger an alert box when btnCheckOut
is clicked!

           <script language="javascript">
                  function GoCheckout(){
                        // this example is triggers alert box when button is clicked
                        // replace with whatever Javascript code you need to run
                        alert("The Checkout Button was clicked");
LVL 17

Expert Comment

ID: 36977970
Very simple In page_load subroutine Add

btnCheckOut.Attributes.Add("onclick", "GoCheckout();")

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