Best Way: Call JavaScript From Code Behind In C#

In this post, we want to discuss a nice function to Call the JavaScript function from code behind in C#. Before we get started, if you want to know about required field validation with jQuery, please go through the following article: Simple Required Field Validation on jQuery.

Many times we come across situations where we need to call jQuery functions from the code behind. This can be achieved by registering the ClientScript block. Let’s take a look at an example.

JavaScript function :


<script type="text/javascript">
    function WelcomeUser(username) {
        alert("Welcome to " + username);
    }
</script>

function WelcomeUser(username) {

alert("Welcome to " + username);

}

</script>

Code-behind :


protected void Page_Load(object sender, EventArgs e)
{
     ClientScript.RegisterStartupScript(GetType(),"hwa", "WelcomeUser('TechAid24');", true);
}