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Web Development: Unraveling HTML, CSS, and JavaScript

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Commencing the Journey: Introductions and Conventions

Introduction Who is This Course For?What This Course Covers Conventions

A Short Tour of HTML, CSS, and JavaScript

Getting Started with Live Coding!Hands-On: Diving into HTML Basics How it Works: Creating a Basic HTML Page Hands-On: Formatting the HTML Page How It Works: Formatting Our HTML Page Inline Styling Our HTML Page Hands On: Using an Embedded Style Sheet How It Works: Using an Embedded Style Sheet Hands On: Moving Styles into a Separate File How It Works: Moving Styles into a Separate File Hands On: Defining Visual Behavior with CSS How It Works: Defining Visual Behavior with CSS Hands On: Adding Actions to the Web Page with JavaScript How It Works: Adding Actions to the Web Page with JS Meeting the DOM Leveraging Page Inspector Hands On: Using jQuery How jQuery Works Debugging JavaScript Summary

HTML5: First Impressions and Beyond

The Unordinary Story of HTML5 What's Behind the Term HTML5?HTML5 Markup Basics Using HTML <head>Defining HTML Content Exercises: Content and Structure Enriching Web Pages: Rendering Text Rendering Text: Code Along Exercises Using Reserved Characters and Symbols in HTML Adding Paragraphs and Text Breaks in HTML Enriching Web Pages: Adding Headings Enriching Web Pages: Adding Lists Enriching Web Pages: Adding Links Enriching Web Pages: Adding Images Lists, Links, and Images: Bonus Fun Exercise!Summary

Achieving Richer User Experience with HTML

What it's All About Old Style: The Omnipotent <div>Structure and Semantics Headers HTML Footers Sections Figures in the Page Sidebars Navigation Other Semantic Elements World of HTML Tables Defining a Simple Table in HTML Spanning Rows and Columns Markup for Table Headers Defining Styles for Tables Table Captions Compound Tables Hands On: Scrolling the Table Body How It Works: Scrolling the Table Body Making Things Exciting With Multimedia New HTML5 Markup How It Works: Using the Video Tag Hands On: Using the Video Tag Video Formats Hands On: Supporting Multiple Video Formats How It Works: Supporting Multiple Video Formats Video Resilient Web Pages and the Audio Tag What You Cannot Do with <video> and <audio>Summary

Forms and Controls

Web Forms Basics Hands On: Representing Web Forms in HTML Controls Overview Hands On: Using Controls to Build Web Forms How It Works: Using Controls to Build Web Forms Hands On: Using Controls that Allow Specifying Options Hands On: Sending and Processing Form Data How it Works: Sending and Processing Form Data Hands On: Catching Data at the Server How it Works: Catching Data at the Server Using GET and POST Hands On: Making Use of More Controls How it Works: Making Use of More Controls Using Hidden Fields Using <optgroup> in Dropdown Lists Using Buttons Form Validation Validation Attributes Validation and JavaScript Summary

A Few More Things On HTML

Other HTML Elements Thematic Breaks Quotes Images and Mappings Visualizing Progress Refining Markup Details Inline Frames Custom Attributes Hands On: Painting the Canvas How it Works: Painting the Canvas Hands On: Vivifying the Canvas How it Works: Vivifying the Canvas Hands On: Drawing the Trajectory How it Works: Drawing the Trajectory What Else You Can Do with a Canvas Facing the Past and Future of HTML5 Issues with New HTML5 Tags HTML5 Tools and Validation Checking HTML5 Compatibility Summary

Delving into the Document Object Model

DOM Basics Ubiquitous Language of Page Representation Cornerstone of Interactions The DOM Application Programming Interface What the DOM Covers Hands On: Querying the Document How it Works: Querying the Document Hands On: Changing the DOM How it Works: Changing the DOM Hands On: Completing Event Handling Navigating in the Document Tree Node Navigation Basics Accessing Element Content A Brief Navigation Reference Element Specific Properties Changing the Document Tree Adding New Child Elements to the Document Adding Adjacent Elements Removing and Replacing Elements Changing Attributes and Element Style Using Event Parameters Going Global: Global Attributes Going Global: Global Events Summary

Entering the Realm of JavaScript

A Couple of JavaScript Peculiarities A Brief History of JavaScript Objects and Dynamism Functions are First Class Citizens Regular Expression Literals Placing JavaScript in HTML JavaScript Syntax Basics Variables Types Argument Passing Understanding Scopes Working With the Boolean Type Working With the Number Type Converting to the Number Type Number Methods Working With the String Type Converting to Strings String Properties and Functions Working With the Date Type Working With the Object Type A Quick Overview of Function Prototypes Instance Properties and Methods Working With the Array Type Array Conversions Array Operations: Creating Stacks and Queues Array Methods to Manipulate Strings Array Methods to Change Element Ordering Advanced Array Operations Unary Operators Arithmetic Operators Equality Operators Relational and Boolean Operators Bitwise Operators Assignment Operators Conditional, Comma, typeof, and instanceof Operators Operator Precedence The if, while, and do-while Statements The for and for-in loops The switch and with Statements Summary

Advanced JavaScript Programming

The JavaScript Object Notation

Serializing and Parsing JSON

Specifying Function Expressions

Recursive Functions

Programming with Objects

Object Properties

Removing Object Properties

Instantiating Objects

Using Object Prototypes

Object Inheritance

The Browser Object Model

Methods of the Windows Object

The History Object

The Location Object

The Navigator Object

The Screen Object

The onerror Event

Managing Errors

Introducing CSS in Style

Styles and Cascading Style Sheets Styling Page Elements CSS At-Rules The Concept of Cascading Selectors Attribute selectors Group Selectors and the Universal Selector Pseudo-Element and Pseudo-Class Selectors Descendent Selectors Child Selectors Sibling Selectors Other Selectors Style Properties Colors Length, Size Types and URL Values Baseline Style Sheet The Cascading Order Selector Group Priorities Calculating Selectivity Location Priorities Media-Dependent Style Sheets Adding Media Style Sheets Media Queries Summary

Basic Style Patterns

Text Formatting Font Type, Size, and Color Text Styles Paragraphs Styling Lists Using Web Fonts The Box Model Margins and Paddings Special Behavior of Margins Setting Up Borders Height and Width of the Box Boxing Inline Elements Using Floating Elements Using Background Images Positioning Background Images Aligning Background Images with Borders and Paddings Sizing Background Images The Background Shorthand Notation Styling Tables Basic Font and Colors Adjusting Text Setting Up Table-Specific Properties Styling Tips for Forms Summary

The Voyage Ahead

Career Paths After This Course Learning Paths After This Course

The onerror Event

In this lesson, we will meet the onerror event in detail. Let's begin!

We'll cover the following

Listing: Exercise/index.html

Depending on how your browser is configured, unhandled errors (exceptions that have not been handled by the code) are displayed. For example, Internet Explorer displays the NegativeNumberUsed exception specified in the previous code snippet as shown below:

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