JavaScript is a lightweight and server-side language. JavaScript can execute on a device that has a special program called the JavaScript engine. JavaScript is used to design dynamic web pages with HTML and CSS.

JavaScript Frameworks

  •   Angular
  •   React
  •   Node.js
  •   Vue
  •   Ember
  •   Polymer
  •   BackBone

Function In JavaScript

Function Declaration

when declaring a function we use the function keyword.

function add(number1 ,number2)


return number1 + number2;


In the above example add is the function name and number1, number2 are the arguments that we pass to the function.

Function Invocation

add(number1, number2);

when we declare an anonymous function, let see how to call an anonymous function call

var func = function (){

    alter(“This is an anonymous function”);




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