JavaScript Tutorial: A Comprehensive Guide to Mastering JavaScript
Welcome to the JavaScript tutorial, an in-depth and comprehensive guide designed to help you master the fundamentals and advanced concepts of JavaScript programming. Whether you are a beginner looking to explore the basics of web...
,About the Tutorial
JavaScript is a lightweight, interpreted programming language. It is designed for
creating network-centric applications. It is complimentary to and integrated with
Java. JavaScript is very easy to implement because it is integrated with HTML. It
is open and cross-platform.
Audience
This tutorial has been prepared for JavaScript beginners to help them understand
the basic functionality of JavaScript to build dynamic web pages and web
applications.
Prerequisites
For this tutorial, it is assumed that the reader have a prior knowledge of HTML
coding. It would help if the reader had some prior exposure to object-oriented
programming concepts and a general idea on creating online applications.
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you discover any errors on our website or in this tutorial, please notify us at
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,Table of Contents
About the Tutorial .............................................................................................................................................
Audience ........................................................................................................................................................... i
Prerequisites ..................................................................................................................................................... i
Copyright and Disclaimer ................................................................................................................................. i
Table of Contents ............................................................................................................................................ ii
PART 1: JAVASCRIPT BASICS ........................................................................................................ 1
1. JAVASCRIPT – Overview ............................................................................................................................ 2
What is JavaScript? .......................................................................................................................................... 2
Client-Side JavaScript....................................................................................................................................... 2
Advantages of JavaScript ................................................................................................................................. 3
Limitations of JavaScript .................................................................................................................................. 3
JavaScript Development Tools......................................................................................................................... 3
Where is JavaScript Today? ............................................................................................................................. 4
2. JAVASCRIPT – Syntax ................................................................................................................................ 5
Your First JavaScript Code ............................................................................................................................... 5
Whitespace and Line Breaks ............................................................................................................................ 6
Semicolons are Optional.................................................................................................................................. 6
Case Sensitivity ................................................................................................................................................ 7
Comments in JavaScript .................................................................................................................................. 7
3. JAVASCRIPT – Enabling ............................................................................................................................. 9
JavaScript in Internet Explorer ........................................................................................................................ 9
JavaScript in Firefox ......................................................................................................................................... 9
JavaScript in Chrome ..................................................................................................................................... 10
JavaScript in Opera ........................................................................................................................................ 10
Warning for Non-JavaScript Browsers ........................................................................................................... 10
4. JAVASCRIPT – Placement ........................................................................................................................ 12
JavaScript in <head>...</head> Section ......................................................................................................... 12
JavaScript in <body>...</body> Section ......................................................................................................... 13
JavaScript in <body> and <head> Sections .................................................................................................... 13
JavaScript in External File .............................................................................................................................. 14
9. JAVASCRIPT – While Loop ....................................................................................................................... 47
The while Loop .............................................................................................................................................. 47
The do...while Loop ....................................................................................................................................... 49
10. JAVASCRIPT – For Loop ........................................................................................................................... 52
The for Loop .................................................................................................................................................. 52
12. JAVASCRIPT – Loop Control..................................................................................................................... 57
The break Statement ..................................................................................................................................... 57
The continue Statement ................................................................................................................................ 59
Using Labels to Control the Flow ................................................................................................................... 60
13. JAVASCRIPT – Functions .......................................................................................................................... 64
Function Definition ........................................................................................................................................ 64
Calling a Function .......................................................................................................................................... 65
Function Parameters ..................................................................................................................................... 66
The return Statement .................................................................................................................................... 67
Nested Functions ........................................................................................................................................... 68
Function () Constructor ................................................................................................................................. 70
Function Literals ............................................................................................................................................ 71
14. JAVASCRIPT – Events............................................................................................................................... 74
What is an Event? .......................................................................................................................................... 74
onclick Event Type ......................................................................................................................................... 74
onsubmit Event Type ..................................................................................................................................... 75
onmouseover and onmouseout .................................................................................................................... 76
HTML 5 Standard Events ............................................................................................................................... 77
15. JAVASCRIPT – Cookies ............................................................................................................................. 82
What are Cookies?......................................................................................................................................... 82
How It Works? ............................................................................................................................................... 82
Storing Cookies .............................................................................................................................................. 83
Reading Cookies ............................................................................................................................................ 84
Setting Cookies Expiry Date ........................................................................................................................... 86
Deleting a Cookie ........................................................................................................................................... 87
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