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JavaScript Tutorial

  1. JavaScript Browser Objects Part 2
  2. JavaScript Frame object
  3. JavaScript Form Object
  4. JavaScript FileUpload Object
  5. JavaScript Event Object Properties and Methods
  6. JavaScript Event Object
  7. JavaScript Elements and Embed Objects
  8. JavaScript Applet Objects
  9. JavaScript Browser Objects
  10. JavaScript Object Oriented Features
  11. JavaScript Window Object Open Method Part 2
  12. JavaScript Window Object Open Method
  13. JavaScript Window Object Timeout Methods
  14. JavaScript Location Object
  15. JavaScript Location Object Properties
  16. JavaScript History Object Properties and Methods
  17. JavaScript Document Object Methods Part II
  18. JavaScript Document Object Methods Part I
  19. JavaScript Document Object Properties
  20. JavaScript Document Object
  21. JavaScript Windows Object Properties Part II
  22. JavaScript Windows Object Properties Part I
  23. JavaScript DOM Window Object
  24. Working with JavaScript DOM Objects
  25. JavaScript Array Object Methods – Part II
  26. JavaScript Array Object
  27. JavaScript Array Object Methods – Part I
  28. JavaScript Boolean Object
  29. JavaScript OnError Event
  30. JavaScript Exception Handling – Part II
  31. JavaScript Exception Handling – Part I
  32. JavaScript Event Handler
  33. JavaScript Events Handling
  34. JavaScript Array Operations
  35. JavaScript Two Dimensional Arrays
  36. Passing values to JavaScript Function
  37. JavaScript Functions
  38. JavaScript Arrays
  39. JavaScript Iterative Structures - Part II
  40. JavaScript Iterative Structures - Part I
  41. JavaScript Math Object
  42. JavaScript Date Object
  43. JavaScript String Object
  44. JavaScript Objects
  45. JavaScript Confirm Box
  46. JavaScript Alert Box
  47. JavaScript Conditional Statements Part 2
  48. JavaScript Conditional Statements Part 1
  49. How to use JavaScript in HTML page
  50. JavaScript Variables
  51. JavaScript Features
  52. JavaScript Introduction

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Table of Contents

 JavaScript Array Object
 JavaScript Array Object Methods

JavaScript Array Object

Page 1 of 2
Author : Exforsys Inc.     Published on: 6th Jun 2007

JavaScript Array Object

In this JavaScript tutorial, you will learn about JavaScript Array Object, its properties and methods.

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Usage of the Array Object:

The Array object is used to store a set of values in a single variable name.

There are many operations involved with Array object:

  • Defining Array object
  • Adding Values to Array
  • Accessing Array
  • Editing or Modifying the Values of an Array

These topics have been addressed in previous sections on Arrays in JavaScript.

In this section, the properties and methods of Array Object in JavaScript will be outlined.

Properties of array Object:

length:

The length property of an array object returns the number of elements in an array.

General Syntax of length property of an array Object in JavaScript:


arrayObject.length 

For example:


<html>

  <body>
   <script type="text/javascript">
     var exforsys = new Array(2)
     exforsys[0] = "Good"
     exforsys[1] = "Best"

     document.write("Old value of length:" + arr.length)
     document.write("<br />")
     arr.length=4
     document.write("Modified value of length:"+arr.length)
    </script>
  </body>
</html>

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The output of the code above will be:


Old value of length: 2
Modified value of length: 4

index Property :

The index Property is a read-only property and this gives the index of the Array Object.



 
This tutorial is part of a JavaScript Tutorial tutorial series. Read it from the beginning and learn yourself.

JavaScript Tutorial

  1. JavaScript Browser Objects Part 2
  2. JavaScript Frame object
  3. JavaScript Form Object
  4. JavaScript FileUpload Object
  5. JavaScript Event Object Properties and Methods
  6. JavaScript Event Object
  7. JavaScript Elements and Embed Objects
  8. JavaScript Applet Objects
  9. JavaScript Browser Objects
  10. JavaScript Object Oriented Features
  11. JavaScript Window Object Open Method Part 2
  12. JavaScript Window Object Open Method
  13. JavaScript Window Object Timeout Methods
  14. JavaScript Location Object
  15. JavaScript Location Object Properties
  16. JavaScript History Object Properties and Methods
  17. JavaScript Document Object Methods Part II
  18. JavaScript Document Object Methods Part I
  19. JavaScript Document Object Properties
  20. JavaScript Document Object
  21. JavaScript Windows Object Properties Part II
  22. JavaScript Windows Object Properties Part I
  23. JavaScript DOM Window Object
  24. Working with JavaScript DOM Objects
  25. JavaScript Array Object Methods – Part II
  26. JavaScript Array Object
  27. JavaScript Array Object Methods – Part I
  28. JavaScript Boolean Object
  29. JavaScript OnError Event
  30. JavaScript Exception Handling – Part II
  31. JavaScript Exception Handling – Part I
  32. JavaScript Event Handler
  33. JavaScript Events Handling
  34. JavaScript Array Operations
  35. JavaScript Two Dimensional Arrays
  36. Passing values to JavaScript Function
  37. JavaScript Functions
  38. JavaScript Arrays
  39. JavaScript Iterative Structures - Part II
  40. JavaScript Iterative Structures - Part I
  41. JavaScript Math Object
  42. JavaScript Date Object
  43. JavaScript String Object
  44. JavaScript Objects
  45. JavaScript Confirm Box
  46. JavaScript Alert Box
  47. JavaScript Conditional Statements Part 2
  48. JavaScript Conditional Statements Part 1
  49. How to use JavaScript in HTML page
  50. JavaScript Variables
  51. JavaScript Features
  52. JavaScript Introduction
 

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