How to call ASP.NET server side button click event from javascript?( ASP.NET interview questions with answers)

https://www.dotnetinterviewquestions.in/article_how-to-call-aspnet-server-side-button-click-event-from-javascript-aspnet-interview-questions-with-answers_179.html

function __doPostBack( eventTarget, eventArgument )

    document.Form1.__EVENTTARGET.value = eventTarget;

    document.Form1.__EVENTARGUMENT.value = eventArgument;

document.Form1.submit();

}