This document provides an introduction to JavaScript programming through a tutorial. Section A discusses programming, HTML, and JavaScript. It covers the history and purpose of the World Wide Web, how HTML is used to design web pages, and JavaScript's role in making web pages interactive. It also explains how to create basic HTML documents and introduces JavaScript syntax and logic.
Introduction to JavaScript course. The course was updated in 2014-15.
Will allow you to understand what is JavaScript, what's it history and how you can use it.
The set of slides "Introduction to jQuery" is a follow up - which would allow the reader to have a basic understanding across JavaScript and jQuery.
Introduction to JavaScript course. The course was updated in 2014-15.
Will allow you to understand what is JavaScript, what's it history and how you can use it.
The set of slides "Introduction to jQuery" is a follow up - which would allow the reader to have a basic understanding across JavaScript and jQuery.
We will cover whole of the web development basics comprising of HTML, CSS, JavaScript in this series.
Following are topics useful for any newbie to intermediate who is interested in learning Web Development
These projects demonstrated my ability to program Visual Studio .Net with C# as the programming language in 2 separate projects.
The Purpose of the first project was to build parts of the business tier for a retail Company. The goal is to create and test two assemblies. The first assembly is a class library project called Foundation. It will contain various interfaces and base classes.
The second assembly is also a Class Library project and its called AppTypes and it will contain various entity, collection and exception classes used by various business processes.
The Objective of the second project Is to create a database to support the principal functions of a library’s day-to-day operations: adding new members (adult and juvenile) and checking books in and out.
A Windows Forms-based front end application that will provide a librarian with a visual interface through which he or she may perform the desired functions.
And the project goal is to Design and develop a front end application that satisfies the four basic functionalities: Add Adult, Add Juvenile, Check in a book, Check Out a book.
Develop code that is easily maintainable.
Provide validation for all required fields.
Provide adequate error handling.
Produce a user interface that is intuitive, requiring minimal training for users while minimizing resource utilization.
What is JavaScript?
JavaScript is a very powerful client-side scripting language. JavaScript is used mainly for enhancing the interaction of a user with the webpage. In other words, you can make your webpage more lively and interactive, with the help of JavaScript. JavaScript is also being used widely in game development and Mobile application development.
Interpreted programming or scripting language from Netscape.
Easier to code than the compiled languages like C and C++.
Lightweight and most commonly used script in web pages.
Allow client-side user to interact and create dynamic pages.
Cross-platform and object-oriented scripting language.
Most popular programming language in the world.
JavaScript Roadmap - The Basics event presentation covers:
- JavaScript Applications
- History of JavaScript
- Basics of JavaScript programming
- Announcements from Codecademy JU chapter
Over 200 Pages of resources and code snippets to learn JavaScript and JavaScript DOM manipulation. JavaScript is the most popular web programming language and this eBook will help you learn more about JavaScript Coding
JavaScript is a scripting language that will allow you to add real programming to your webpages.
You can use this tutorial either as a complete introduction or as an A-Z reference to JavaScript.
The pages are packed with:
Easy to understand explanations, massive examples, tips, smart workarounds and useful quick references.
If you're completely new to JavaScript you should start with the section that covers JavaScript Basics.
http://vibranttechnologies.co.in/
JavaScript is a scripting language that will allow you to add real programming to your webpages.
You can use this tutorial either as a complete introduction or as an A-Z reference to JavaScript.
The pages are packed with:
Easy to understand explanations, massive examples, tips, smart workarounds and useful quick references.
If you're completely new to JavaScript you should start with the section that covers JavaScript Basics.
http://vibranttechnologies.co.in/
http://vibrantgroup.co.in/
We will cover whole of the web development basics comprising of HTML, CSS, JavaScript in this series.
Following are topics useful for any newbie to intermediate who is interested in learning Web Development
These projects demonstrated my ability to program Visual Studio .Net with C# as the programming language in 2 separate projects.
The Purpose of the first project was to build parts of the business tier for a retail Company. The goal is to create and test two assemblies. The first assembly is a class library project called Foundation. It will contain various interfaces and base classes.
The second assembly is also a Class Library project and its called AppTypes and it will contain various entity, collection and exception classes used by various business processes.
The Objective of the second project Is to create a database to support the principal functions of a library’s day-to-day operations: adding new members (adult and juvenile) and checking books in and out.
A Windows Forms-based front end application that will provide a librarian with a visual interface through which he or she may perform the desired functions.
And the project goal is to Design and develop a front end application that satisfies the four basic functionalities: Add Adult, Add Juvenile, Check in a book, Check Out a book.
Develop code that is easily maintainable.
Provide validation for all required fields.
Provide adequate error handling.
Produce a user interface that is intuitive, requiring minimal training for users while minimizing resource utilization.
What is JavaScript?
JavaScript is a very powerful client-side scripting language. JavaScript is used mainly for enhancing the interaction of a user with the webpage. In other words, you can make your webpage more lively and interactive, with the help of JavaScript. JavaScript is also being used widely in game development and Mobile application development.
Interpreted programming or scripting language from Netscape.
Easier to code than the compiled languages like C and C++.
Lightweight and most commonly used script in web pages.
Allow client-side user to interact and create dynamic pages.
Cross-platform and object-oriented scripting language.
Most popular programming language in the world.
JavaScript Roadmap - The Basics event presentation covers:
- JavaScript Applications
- History of JavaScript
- Basics of JavaScript programming
- Announcements from Codecademy JU chapter
Over 200 Pages of resources and code snippets to learn JavaScript and JavaScript DOM manipulation. JavaScript is the most popular web programming language and this eBook will help you learn more about JavaScript Coding
JavaScript is a scripting language that will allow you to add real programming to your webpages.
You can use this tutorial either as a complete introduction or as an A-Z reference to JavaScript.
The pages are packed with:
Easy to understand explanations, massive examples, tips, smart workarounds and useful quick references.
If you're completely new to JavaScript you should start with the section that covers JavaScript Basics.
http://vibranttechnologies.co.in/
JavaScript is a scripting language that will allow you to add real programming to your webpages.
You can use this tutorial either as a complete introduction or as an A-Z reference to JavaScript.
The pages are packed with:
Easy to understand explanations, massive examples, tips, smart workarounds and useful quick references.
If you're completely new to JavaScript you should start with the section that covers JavaScript Basics.
http://vibranttechnologies.co.in/
http://vibrantgroup.co.in/
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1. Tutorial 1
Introduction to
JavaScript
Section A – Programming, HTML,
and JavaScript
JavaScript Tutorial 1 - Introduction to JavaScript 1
2. Tutorial 1A Topics
Section A – Programming, HTML, and
JavaScript
• About the World Wide Web
• Uses of JavaScript
• About Hypertext Markup Language
• How to creating an HTML document
• About the JavaScript programming language
• About logic and debugging
JavaScript 2
Tutorial 1 - Introduction
3. Programming, HTML, and
JavaScript
The World Wide Web
• Created in 1989
European Laboratory for Particle Physics
(Geneva Switzerland)
• Purpose
Provide an easy way to access cross-
referenced documents that exist on the
internet
JavaScript 3
Tutorial 1 - Introduction
4. Programming, HTML, and
JavaScript
The World Wide Web
• Hypertext links
Contain reference to locate and open specific
documents
• Hypertext Markup Language (HTML)
Language used to design web pages
(documents)
• Web Browser
Program that displays HTML documents
JavaScript 4
Tutorial 1 - Introduction
5. Programming, HTML, and
JavaScript
The World Wide Web
• Uniform Resource Locator (URL)
A type of Uniform Resource Identifier (URI)
• Identifies names and addresses on the WWW
A unique identifier for a web document
• e.g., a telephone number or mailing address
JavaScript 5
Tutorial 1 - Introduction
6. Programming, HTML, and
JavaScript
The World Wide Web
• Uniform Resource Locator (URL)
Consists of 4 parts:
• Protocol → Hyper Text Transfer Protocol (HTTP)
• Domain Name → or Internet Protocol (IP) address
• Directory
• Filename
Specific document filename
index.(s)htm(l) or default.(s)htm(l)
JavaScript 6
Tutorial 1 - Introduction
8. Programming, HTML, and
JavaScript
JavaScript’s role on the Web
• HTML
Purpose → tell the browser how a document
should appear
Static → can view or print (no interaction)
JavaScript 8
Tutorial 1 - Introduction
9. Programming, HTML, and
JavaScript
JavaScript’s role on the Web
• JavaScript Programming Language
Developed by Netscape for use in Navigator
Web Browsers
Purpose → make web pages (documents)
more dynamic and interactive
• Change contents of document, provide forms and
controls, animation, control web browser window,
etc.
JavaScript 9
Tutorial 1 - Introduction
13. Programming, HTML, and
JavaScript
Hypertext Markup Language
• HTML Document
Text document that contains:
• Tags → formatting instructions
• Text to be displayed
Document is parsed or rendered by browser
JavaScript 13
Tutorial 1 - Introduction
14. Programming, HTML, and
JavaScript
Hypertext Markup Language
• HTML Document
Tags
• Enclosed in brackets <tag>
• Generally consist of:
Opening tags <tag>
Closing tags </tag>
• Text contained between the opening and closing
tags are formatted according to tag instructions
JavaScript 14
Tutorial 1 - Introduction
15. Programming, HTML, and
JavaScript
Hypertext Markup Language
• HTML Document
Tags
• All HTML documents begin with <html> tag and
end with </html>
• HTML is not case sensitive
JavaScript 15
Tutorial 1 - Introduction
16. Programming, HTML, and
JavaScript
Hypertext Markup Language
• HTML Document
Tag Attributes
• Used to configure tags
• Placed before closing bracket of opening tag
<tag attribute=“value”>some text</tag>
JavaScript 16
Tutorial 1 - Introduction
20. Programming, HTML, and
JavaScript
Hypertext Markup Language
• HTML Document
Web browser only acknowledges text and
valid tags
Web browser ignores non-printing
characters
• Spaces, tabs, carriage returns
Must use valid tags or special character
codes to accomplish this:
• Non-breaking space →
JavaScript 20
Tutorial 1 - Introduction
23. Programming, HTML, and
JavaScript
Creating an HTML Document
• Text editor (text)
Notepad, WordPad
• Word Processor (that can create text
files)
Word
• HTML Editor (WYSIWYG)
FrontPage, PageMill
• HTML Converters (WYSIWYG)
Word, PowerPoint
JavaScript 23
Tutorial 1 - Introduction
25. Programming, HTML, and
JavaScript
The JavaScript Programming
Language
• Scripting Languages
Executed by an interpreter contained within
the web browser (scripting host)
Interpreter uses a scripting engine
• Converts code to executable format each time it
runs
• Converted when browser loads web document
JavaScript 25
Tutorial 1 - Introduction
26. Programming, HTML, and
JavaScript
The JavaScript Programming
Language
• JavaScript
Originally called LiveScript when introduced
in Netscape Navigator
In Navigator 2.0, name changed to
JavaScript
Current version 1.5
• JScript
MS version of JavaScript
• Current version 5.5
JavaScript 26
Tutorial 1 - Introduction
27. Programming, HTML, and
JavaScript
The JavaScript Programming
Language
• ECMAScript
International, standardized version (Edition
3)
Both versions (JavaScript and JScript)
conform to the standard
• Although both have proprietary extensions
Focus of this text
JavaScript 27
Tutorial 1 - Introduction
28. Programming, HTML, and
JavaScript
The JavaScript Programming
Language
• JavaScript
Two formats:
• Client-side
Program runs on client (browser)
• Server-side
Program runs on server
Proprietary to web server platform
JavaScript 28
Tutorial 1 - Introduction
30. Programming, HTML, and
JavaScript
Logic and Debugging
• Syntax
Rules of the language
• Logic
Order of execution of various parts of the
program
JavaScript 30
Tutorial 1 - Introduction
31. Programming, HTML, and
JavaScript
Logic and Debugging
• Syntax error
Misuse of syntax
• e.g., typing fer instead of for
• Logic errors
Unintended operation of program
• e.g., Infinite loop
JavaScript 31
Tutorial 1 - Introduction
32. Programming, HTML, and
JavaScript
Logic and Debugging
• Debugging
Tracing and resolving errors in a program
Coined by Admiral Grace Hopper
• Moth short-circuited a relay
“bug” in the system
• Removed it → system “debugged”
Not an exact science
JavaScript 32
Tutorial 1 - Introduction