• Change the page data at runtime
  • To validate user is doing on the page -> forms
  • Show or hide elements on page on user action
  • Download or upload data on background
  • Animation effect
  • Control Timer
  • Control Ajax
  • Control DOM
  • Control Events
            

2. Function

Sum is :

            

3. Objects and object methods

In javascript everything is object.

    

4. Local & global variable

    

5. String Methods

    

6. Math Methods

    

7. Array

    

8. If Statement

    

9. Falsy value and equality operator: undefined,null,0,'',NaN

    

10. For loop

    

11. While loop

    

12. Switch

    

13. Hoisting

            

14. DOM

    

15. DOM Events

Click here

Click here

            

DOM Event Listener

Click

            

16 Brower Object Model

            

17. Js object

var rabs = { name: "rabin", yearOfBirth: 1994, job: "student", };
            

17. constructor function

            

18. Object Create

                

19. Primitives vs objects

            

20. using function

            

21. First class function -> passing function to function.

            

22. Returning function from function