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DOM Enlightenment

Book Description

With DOM Enlightenment, you’ll learn how to manipulate HTML more efficiently by scripting the Document Object Model (DOM) without a DOM library. Using code examples in cookbook style, author Cody Lindley (jQuery Cookbook) walks you through modern DOM concepts to demonstrate how various node objects work.

Over the past decade, developers have buried the DOM under frameworks that simplify its use. This book brings these tools back into focus, using concepts and code native to modern browsers. If you have JavaScript experience, you’ll understand the role jQuery plays in DOM scripting, and learn how to use the DOM directly in applications for mobile devices and specific browsers that require low overhead.

  • Understand JavaScript node objects and their relationship to the DOM
  • Learn the properties and methods of document, element, text, and DocumentFragment objects
  • Delve into element node selecting, geometry, and inline styles
  • Add CSS style sheets to an HTML document and use CSSStyleRule objects
  • Set up DOM events by using different code patterns
  • Learn the author’s vision for dom.js, a jQuery-inspired DOM Library for modern browsers

Table of Contents

  1. Foreword
  2. Preface
    1. Who Should Read This Book
    2. Technical Intentions, Allowances, and Limitations
    3. License
    4. This Book Is Not Like Other Programming Books
    5. Color-Coding Conventions
    6. jsFiddle
    7. Conventions Used in This Book
    8. Using Code Examples
    9. Safari® Books Online
    10. How to Contact Us
  3. 1. Node Overview
    1. 1.1 The Document Object Model (a.k.a. the DOM) Is a Hierarchy/Tree of JavaScript Node Objects
    2. 1.2 Node Object Types
    3. 1.3 Subnode Objects Inherit From the Node Object
    4. 1.4 Properties and Methods for Working with Nodes
    5. 1.5 Identifying the Type and Name of a Node
    6. 1.6 Getting a Node’s Value
    7. 1.7 Using JavaScript Methods to Create Element and Text Nodes
    8. 1.8 Using JavaScript Strings to Create and Add Element and Text Nodes to the DOM
    9. 1.9 Extracting Parts of the DOM Tree as JavaScript Strings
    10. 1.10 Using appendChild() and insertBefore() to Add Node Objects to the DOM
    11. 1.11 Using removeChild() and replaceChild() to Remove and Replace Nodes
    12. 1.12 Using cloneNode() to Clone Nodes
    13. 1.13 Grokking Node Collections (i.e., NodeList and HTMLCollection)
    14. 1.14 Getting a List/Collection of All Immediate Child Nodes
    15. 1.15 Converting a NodeList or HTMLCollection to a JavaScript Array
    16. 1.16 Traversing Nodes in the DOM
    17. 1.17 Verifying a Node Position in the DOM Tree with contains() and compareDocumentPosition()
    18. 1.18 Determining Whether Two Nodes Are Identical
  4. 2. Document Nodes
    1. 2.1 document Node Overview
    2. 2.2 HTMLDocument Properties and Methods (Including Inherited)
    3. 2.3 Getting General HTML Document Information (title, url, referrer, lastModified, and compatMode)
    4. 2.4 document Child Nodes
    5. 2.5 document Provides Shortcuts to <!DOCTYPE>, <html lang="en">, <head>, and <body>
    6. 2.6 Using document.implementation.hasFeature() to Detect DOM Specifications/Features
    7. 2.7 Getting a Reference to the Focus/Active Node in the Document
    8. 2.8 Determining Whether the Document or Any Node Inside the Document Has Focus
    9. 2.9 document.defaultView Is a Shortcut to the Head/Global Object
    10. 2.10 Using ownerDocument to Get a Reference to the Document from an Element
  5. 3. Element Nodes
    1. 3.1 HTML*Element Object Overview
    2. 3.2 HTML*Element Object Properties and Methods (Including Inherited)
    3. 3.3 Creating Elements
    4. 3.4 Getting the Tag Name of an Element
    5. 3.5 Getting a List/Collection of Element Attributes and Values
    6. 3.6 Getting, Setting, and Removing an Element’s Attribute Value
    7. 3.7 Verifying Whether an Element Has a Specific Attribute
    8. 3.8 Getting a List of Class Attribute Values
    9. 3.9 Adding and Removing Subvalues to a Class Attribute
    10. 3.10 Toggling a Class Attribute Value
    11. 3.11 Determining Whether a Class Attribute Value Contains a Specific Value
    12. 3.12 Getting and Setting data-* Attributes
  6. 4. Element Node Selection
    1. 4.1 Selecting a Specific Element Node
    2. 4.2 Selecting/Creating a List (a.k.a. NodeList) of Element Nodes
    3. 4.3 Selecting All Immediate Child Element Nodes
    4. 4.4 Selecting Contextual Elements
    5. 4.5 Preconfigured Selections/Lists of Element Nodes
    6. 4.6 Using matchesSelector() to Verify That an Element Will Be Selected
  7. 5. Element Node Geometry and Scrolling Geometry
    1. 5.1 Element Node Size, Offsets, and Scrolling Overview
    2. 5.2 Getting an Element’s offsetTop and offsetLeft Values Relative to the offsetParent
    3. 5.3 Using getBoundingClientRect() to Get an Element’s Top, Right, Bottom, and Left Border Edge Offsets Relative to the Viewport
    4. 5.4 Getting an Element’s Size (Border + Padding + Content) in the Viewport
    5. 5.5 Getting an Element’s Size (Padding + Content) in the Viewport, Excluding Borders
    6. 5.6 Using elementFromPoint() to Get the Topmost Element in the Viewport at a Specific Point
    7. 5.7 Using scrollHeight and scrollWidth to Get the Size of the Element Being Scrolled
    8. 5.8 Using scrollTop and scrollLeft to Get and Set Pixels Scrolled from the Top and Left
    9. 5.9 Using scrollIntoView() to Scroll an Element into View
  8. 6. Element Node Inline Styles
    1. 6.1 Style Attribute (a.k.a. Element Inline CSS Properties) Overview
    2. 6.2 Getting, Setting, and Removing Individual Inline CSS Properties
    3. 6.3 Getting, Setting, and Removing All Inline CSS Properties
    4. 6.4 Using getComputedStyle() to Get an Element’s Computed Styles (i.e., Actual Styles Including Any from the Cascade)
    5. 6.5 Using the class and id Attributes to Apply and Remove CSS Properties on an Element
  9. 7. Text Nodes
    1. 7.1 Text Object Overview
    2. 7.2 Text Object and Properties
    3. 7.3 Whitespace Creates Text Nodes
    4. 7.4 Creating and Injecting Text Nodes
    5. 7.5 Getting a Text Node Value with .data or nodeValue
    6. 7.6 Manipulating Text Nodes with appendData(), deleteData(), insertData(), replaceData(), and subStringData()
    7. 7.7 When Multiple Sibling Text Nodes Occur
    8. 7.8 Using textContent to Remove Markup and Return All Child Text Nodes
    9. 7.9 The Difference Between textContent and innerText
    10. 7.10 Using normalize() to Combine Sibling Text Nodes into One Text Node
    11. 7.11 Using splitText() to Split a Text Node
  10. 8. DocumentFragment Nodes
    1. 8.1 DocumentFragment Object Overview
    2. 8.2 Using createDocumentFragment() to Create DocumentFragments
    3. 8.3 Adding a DocumentFragment to the Live DOM
    4. 8.4 Using innerHTML on a Document Fragment
    5. 8.5 Leaving Fragments Containing Nodes in Memory by Cloning
  11. 9. CSS Stylesheets and CSS Rules
    1. 9.1 CSS Stylesheet Overview
    2. 9.2 Accessing All Stylesheets (i.e., CSSStylesheet Objects) in the DOM
    3. 9.3 CSSStyleSheet Properties and Methods
    4. 9.4 CSSStyleRule Overview
    5. 9.5 CSSStyleRule Properties and Methods
    6. 9.6 Using cssRules to Get a List of CSS Rules in a Stylesheet
    7. 9.7 Using insertRule() and deleteRule() to Insert and Delete CSS Rules in a Stylesheet
    8. 9.8 Using the .style Property to Edit the Value of a CSSStyleRule
    9. 9.9 Creating a New Inline CSS Stylesheet
    10. 9.10 Programmatically Adding External Stylesheets to an HTML Document
    11. 9.11 Using the .disabled Property to Disable/Enable Stylesheets
  12. 10. JavaScript in the DOM
    1. 10.1 Inserting and Executing JavaScript Overview
    2. 10.2 JavaScript Is Parsed Synchronously by Default
    3. 10.3 Using defer to Defer the Downloading and Execution of External JavaScript
    4. 10.4 Using async to Asynchronously Download and Execute External JavaScript Files
    5. 10.5 Using Dynamic <script> Elements to Force Asynchronous Downloading and Parsing of External JavaScript
    6. 10.6 Using the onload Callback for Asynchronous <script>s so That We Know When They’re Loaded
    7. 10.7 Be Mindful of <script>s Placement in HTML for DOM Manipulation
    8. 10.8 Getting a List of <script>s in the DOM
  13. 11. DOM Events
    1. 11.1 DOM Events Overview
    2. 11.2 DOM Event Types
    3. 11.3 The Event Flow
    4. 11.4 Adding Event Listeners to Element Nodes, the window Object, and the document Object
    5. 11.5 Removing Event Listeners
    6. 11.6 Getting Event Properties from the Event Object
    7. 11.7 The Value of this When Using addEventListener()
    8. 11.8 Referencing the target of an Event and Not the Node or Object on Which the Event Is Invoked
    9. 11.9 Using preventDefault() to Cancel Default Browser Events
    10. 11.10 Using stopPropagation() to Stop the Event Flow
    11. 11.11 Using stopImmediatePropagation() to Stop the Event Flow As Well As Other Like Events on the Same Target
    12. 11.12 Custom Events
    13. 11.13 Simulating/Triggering Mouse Events
    14. 11.14 Event Delegation
  14. 12. Creating dom.js: A Wishful jQuery-Inspired DOM Library for Modern Browsers
    1. 12.1 dom.js Overview
    2. 12.2 Creating a Unique Scope
    3. 12.3 Creating dom() and GetOrMakeDom(), Globally Exposing dom() and GetOrMakeDom.prototype
    4. 12.4 Creating an Optional Context Parameter Passed to dom()
    5. 12.5 Populating an Object with DOM Node References Based on params and a Return Object
    6. 12.6 Creating an each() Method and Making It a Chainable Method
    7. 12.7 Creating html(), append(), and text() Methods
    8. 12.8 Taking dom.js for a Spin
    9. 12.9 Summary and Continuing with dom.js
  15. About the Author
  16. Colophon
  17. Copyright