How to call javascript and jquery function from code behind in ASP.net and c#

Introduction: Here I will tell you how you can call javascript and jquery function 

from codebehind.

Descirption:
Here I will tell you how you can call javascript and jquery function from codebehind.

If you are using scriptmanager on page then you can call

ScriptManager instance.

If you are not using script manager then you can call 

Page.ClientScript instance

Implementation:

In Code Behind 

protected void MyButton_Click(object sender, EventArgs e)
{
    Page.ClientScript.RegisterStartupScript(this.GetType(), "myScript", 

 "MyFunction();", true);
} 

protected void MyButton_Click(object sender, EventArgs e)
{
    ScriptManager.RegisterStartupScript(this.GetType(), "myScript", 

  "MyFunction();", true);
}