Calling a JavaScript function from codebehind is quiet simple, yet it confuses a lot of developers. Here's how to do it. Declare a JavaScript function in your code as shown below:
JavaScript
<head runat="server"> <title>Call JavaScript From CodeBehind</title> <script type="text/javascript"> function alertMe() { alert('Hello'); } </script> </head>In order to call it from code behind, use the following code in your Page_Load
C#
protected void Page_Load(object sender, EventArgs e) { if (!ClientScript.IsStartupScriptRegistered("alert")) { Page.ClientScript.RegisterStartupScript(this.GetType(), "alert", "alertMe();", true); } }
