Javascript For Web Designers > JavaScript Basics

JavaScript Variables

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Anything that can change is referred to as variable. A variable in JavaScript keeps a data value that can be updated later. To declare a variable in JavaScript, use the reserved keyword var.

It is not recommended to use the same variable name multiple times in JavaScript because it can cause confusion. It is better to use a different variable name for each instance of the same variable.

A JavaScript variable is a name that represents a value that can change over time. The name of the variable is not only used to represent the value but also for the purpose of storing it.

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Course Content

  1. Introduction to Javascript
    20m 47s
  2. Javascript Features
    17m 46s
  3. Ways to write and Add Javascript code?
    26m 51s
  4. Comments in Javascript
    13m 5s
  5. Assignment : Introduction to JavaScript
    3m 10s

  1. JavaScript Variables
    32m 32s
  2. JavaScript global variable
    16m 14s
  3. Primitive Data Types in JavaScript
    26m 30s
  4. JavaScript Non Primitive Datatypes
    15m 32s
  5. JavaScript arithmetic operators
    17m 39s
  6. JavaScript Comparison Operators
    11m 32s
  7. JavaScript Bitwise
    29m 58s
  8. Javascript Logical Operator
    10m 39s
  9. Javascript Assignment Operator
    10m 26s
  10. Special JavaScript Operators
    24m 56s
  11. JavaScript if/else Statement
    25m 4s
  12. JavaScript switch Statement
    24m 31s
  13. JavaScript do/while Statement
    25m 49s
  14. JavaScript for/in Statement
    23m 27s
  15. JavaScript Functions
    22m 54s
  16. JavaScript Function call()
    30m 8s
  17. JavaScript bind () vs apply () and call ()
    31m 25s
  18. Assignment : JavaScript Basics 1
    7m 37s
  19. Assignment : JavaScript Basics 2
    8m 1s

  1. Javascript Objects
    28m 2s

  1. JavaScript Window - The Browser Object Model
    8m 28s
  2. Javascript BOM - Window Object
    21m 39s
  3. Javascript BOM - History Object
    18m 4s
  4. Javascript BOM - Navigator object
    13m 25s
  5. Javascript BOM - Screen Object
    9m 48s
  6. Assignment : Browser Object Model
    5m 37s

  1. Javascript Document Object Model - DOM
    17m 36s
  2. Javascript Document Object Methods
    29m 43s
  3. Assignment : Document Object Model
    6m 48s

  1. Javascript Form Validations
    29m 6s
  2. Javascript Email Validations
    13m 28s
  3. Assignment : JavaScript Validation
    3m 35s

  1. JavaScript Cookies
    23m 11s
  2. Javascript Cookies Example
    18m 21s
  3. JavaScript Cookie Attributes
    20m 20s
  4. JavaScript Cookie with multiple Names
    21m 39s
  5. JavaScript Deleting a Cookie
    15m 48s
  6. Assignment : JavaScript Cookies
    3m 30s

  1. Javascript Events
    32m 49s
  2. Javascript AddEventListner ()
    20m 44s
  3. Javascript Click Events
    10m 28s
  4. Javascript Double Click Event
    12m 41s
  5. Onload event in Javascript
    19m 33s
  6. OnResize Event in Javascript
    20m 3s
  7. Assignment : Events in JavaScript
    4m 43s

  1. Career Guideline
    1m

  1. JavaScript Interview Question
    20m 32s

  1. Course Summary
    2m 41s
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