Call javascript function from codebehind in asp.net

By: Suresh Dasari Aug 9, 2010

Here i will explain how to call javascript function from codebehind without assigning it to any control in asp.net.

We can call javascript functions in two ways

first way is

System.Web.UI.ScriptManager.RegisterClientScriptBlock(Page, typeof(Page), "Script", "document.getElementById('" + button2.ClientID + "').style.display='none';", true);

Seconda way you can call javascript function also

System.Web.UI.ScriptManager.RegisterClientScriptBlock(Page, typeof(Page), "Script", "MyJavascriptFunction();", true);

Like this we can call the javascript functions or buttons in codebehind without assigning it to any control

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17 comments :

Anonymous said...: Hi..
Your site is really nice.i learned many things from this site.Please try to write the above article with some examples.This could be useful for the beginners like me.

1. RegisterClientScriptBlock

2.RegisterClientScriptInclude

3.RegisterStartupScript

4. RegisterOnSubmitStatement; September 30, 2012 at 12:20 AM
Anonymous said...: I had a problem with typeof(Page) so I resorted to the following with success:

System.Web.UI.ScriptManager.RegisterClientScriptBlock(Page, this.GetType(), "Script", "function();", true);; October 11, 2012 at 4:34 AM
Manoj said...: worked for me...
Thank You a lot...; October 12, 2012 at 4:45 AM
Gireesh said...: Its Not Working...........; December 31, 2012 at 8:45 PM
Ramesh said...: yes its not working .....; April 5, 2013 at 10:46 AM
Ramesh said...: we can call the alert from this method but call a function is not working ...!; April 5, 2013 at 10:48 AM
Unknown said...: what is htphandler and http module please help where used in exactly in projects; July 3, 2013 at 4:04 AM
Anonymous said...: i Want the coding for telerik grid; July 22, 2013 at 2:23 AM
Mayank said...: Hi,

I have created one javascript file on button click i lost my effect .

How can i call my Javascript file in code behind on button click .

Thanks
Mayank; July 27, 2013 at 7:13 AM
Unknown said...: hi sureshji

me also suresh can u pls tel me the vise versa of the above concept ...............
thanks in advance; August 24, 2013 at 2:39 AM
Anonymous said...: ScriptManager.RegisterStartupScript(this, this.GetType(), "Script", "showmydiv()", true);

try this; October 10, 2013 at 2:26 AM
Anonymous said...: Hi
I have three text boxes, the sum of the first and second textbox display in the third text box while leaving text box2 using java script

Thanks in advance; October 16, 2013 at 3:55 AM
Ayesha said...: Not working; October 24, 2013 at 12:56 AM
Anonymous said...: I have a problem that
I have 2 popup divs,
on that divs one div is opened from by gridview row command, than the 2nd popup should be open from 1st popup.
i wrote a javascript method, so from that methop can i call 2nd popup too.. ans my question plz..

my code is as follows..

in .aspx page..

in this I m getting 1st popup .. from 1st popup i want to open 2nd one plz ans to my problem..

warmasree@gmail.com; December 14, 2013 at 1:19 AM
Anonymous said...: hello Even both codes are not working for me.. should we import any lib files. ???
thanks in advance.; February 13, 2014 at 11:16 PM
Spencer said...: This comment has been removed by the author.; March 28, 2014 at 11:17 PM
Anonymous said...: How can I get the return value of javascript function???; April 8, 2014 at 10:43 PM