How to call javascript function from code behind server side C#

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Overview: Calling Javascript funtion from server side .i.e code behind in C#.This article explains how to call a JavaScript function from server side (code behind) in C# . First we add page and write a JavaScript function on our .aspx page, here default.aspx is our newly added  page.

Code : Add a JavaScript function on default.aspx page under head tag.


 Server side : using below given code we able to call JavaScript function from server-side.


as our JavaScriptript function name as helloWorld() so our final code would be like as given below


If you have  used UpdatePanel in your Design page (.aspx page ) then the code will be like


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