Primitive Datatype Primitive values and object references are stored in JavaScript programs in different ways. When a primitive value is assigned to a variable (eg. let toy = ‘ball’), variable is given with the value Directly. Non-Primitive Datatype When the variable is assigned with an object, however, things are different. When compared with primitive Datatype it does not assign value to the variable Directly it has only contain reference to it . Here’s an example:

Window The JavaScript window object is the top of the JavaScript Object and represents the browser window. and it is supported by all browsers. All global JavaScript objects , functions, and variables automatically become members of the window object. …

As we all know object is a collection of properties and it is associated between a name or key and a value. for example If your object is car and properties are color,weight,model etc., We can create object in many ways Object Literal-Direct way Object.create Object Instance Object constructor object assign let’s look into each one of them briefly A…

String,Number,Boolean are primitive data types whereas Objects and Arrays are composite data types in JavaScript. primitive data types are passed in by value composite data types i.e.., non-primitive data types are passed in by reference let’s see the basic program of copy by value let a =2; let b=a; console.log(b,a)//2,2 …