Course Content
Javascript Full Course
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JavaScript Introduction
35:24
JavaScript Implementation
17:42
Add HTML Tag In JavaScript
08:55
JavaScript Comments
07:42
JavaScript Variables
15:29
JavaScript Data Types
18:21
JavaScript Arithmetic Operators
23:13
JavaScript Assignment Operators
06:59
JavaScript Google Chrome Console
11:58
JavaScript Comparison Operators
12:37
JavaScript If Statement
06:39
JavaScript Logical Operators
14:29
JavaScript If Else Statement
07:24
JavaScript If Else If Statement
09:47
JS Conditional Ternary Operator
06:46
JavaScript Switch Case
11:22
JavaScript Alert Box
03:42
JavaScript Confirm Box
04:38
JavaScript Prompt Box
04:38
JavaScript Functions
07:04
JavaScript Function Parameters
08:39
JS Functions with Return Value
07:29
JS Global & Local Variable
06:30
JavaScript Events
11:14
JavaScript While Loop
10:26
JavaScript Do While Loop
06:52
JavaScript For Loop
05:52
Break & Continue Statement
06:27
Find Even & Odd Numbers
05:47
JavaScript Nested Loop
15:23
JavaScript Arrays
18:01
JS Multidimensional Arrays
13:43
JS Modify & Delete Array
08:26
JS Array Sort & Reverse
07:18
JS Array Pop & Push
06:36
JS Array Shift & Unshift
05:07
JS Array Concat & Join
08:02
JS Array Slice & Splice
10:14
JavaScript isArray
05:49
JS Array indexOf & lastIndexOf
07:55
JavaScript Includes Method
04:33
JavaScript Some & Every
07:34
JavaScript Find & FindIndex
06:47
JavaScript Array Filter
05:43
JavaScript toString, valueOf & Fill
07:35
JavaScript forEach Loop
06:36
JavaScript Objects
15:10
JavaScript Objects – II
05:38
JS Array of Objects
05:32
JavaScript For-In Loop
05:24
JS Array Map Method
06:29
JavaScript String Methods
17:32
JS String Methods – II
14:31
JS Number Methods
10:37
JavaScript Math Methods
13:14
JavaScript Date Methods
13:39
JS DOM Introduction
05:26
JS DOM Targeting Methods
21:53
JS DOM Get & Set Methods
18:59
JS DOM querySelector & querySelectorAll
10:05
JS DOM CSS Styling Methods
09:47
JS addEventListener Methods
18:15
JS ClassList Methods
15:34
JS ParentElement & Node Methods
11:02
JS Children & childNodes Methods
08:41
JS firstChild & lastChild Method
10:42
JS NextSibling & PreviousSibling Method
09:18
JS createElement & createTextNode
09:45
JavaScript appendChild & insertBefore
14:59
JS insertAdjacentElement & insertAdjacentHTML
14:20
JavaScript replaceChild & removeChild
08:39
JavaScript cloneNode
07:44
JavaScript Contains Method
06:44
JavaScript hasAttribute & hasChildNodes
06:54
JavaScript isEqualNode
08:32
JavaScript Form Events – I
15:22
JavaScript Form Events – II
07:44
JavaScript SetInterval & ClearInterval
10:40
JavaScript setTimeOut & clearTimeOut
08:50
JavaScript BOM Introduction
05:25
JavaScript Window Height & Width
08:43
JS Window Open & Close Method
13:54
JS Window moveBy & moveTo
10:02
JavaScript resizeBy & resizeTo
06:38
JavaScript scrollBy & scrollTo
11:55
JavaScript Location Object
12:01
JavaScript History Object
10:08
JavaScript Course
About Lesson
Introduction:

A function is a set of statements that take inputs, do some specific computation, and produces output. Basically, a function is a set of statements that performs some tasks or does some computation and then return the result to the user.

Like other programming languages, JavaScript also supports the use of functions. You must already have seen some commonly used functions in JavaScript like alert(), this is a built-in function in JavaScript. But JavaScript allows us to create user-defined functions also.

Below are the rules for creating a function in JavaScript:
  • Every function should begin with the keyword function followed by,
  • A user defined function name which should be unique,
  • A list of parameters enclosed within parenthesis and separated by commas,
  • A list of statement composing the body of the function enclosed within curly braces {}.
Exercise Files
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