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Module Outline

The Document Object Model (DOM)

Module Summary

This module dives into the essentials of the Document Object Model (DOM), a core aspect of modern front-end web development. Learners will build upon their foundational JavaScript knowledge to explore advanced DOM manipulation, event handling, form validation, and dynamic content creation. The module emphasizes practical, hands-on exercises and real-world applications, preparing learners to create interactive, data-driven web experiences. By the end of this module, learners will have a strong understanding of the DOM and be ready to tackle more advanced JavaScript topics.

Learning Objectives

By the end of this module, learners will be able to:

  • Explain the purpose and structure of the DOM in web development.
  • Select and manipulate DOM elements using JavaScript.
  • Dynamically update content based on user interactions.
  • Implement event handling for responsive and interactive applications.
  • Validate user inputs using both HTML and JavaScript.
  • Store and retrieve data using local storage for persistent user experiences.

Learning Outcomes

Upon completing this module, learners will be able to:

  1. Efficiently manipulate DOM elements using JavaScript methods.
  2. Develop interactive user interfaces through event-driven programming.
  3. Implement client-side form validation for enhanced user experience.
  4. Persist user data across sessions using local storage.
  5. Build dynamic web applications utilizing the DOM effectively.

Module Outline

Lesson 1: Introduction to the DOM

  • Time: 1.5 hours
  • Topics:
    • Overview of the DOM and its role in web development
    • The structure of the DOM: Nodes, elements, and the document tree
    • Modern element selection methods (querySelector, querySelectorAll)
  • Activities:
    • Code-along: Inspecting the DOM using browser Developer Tools
    • Exercise: Selecting various elements and logging them to the console
  • Knowledge Check: Questions on DOM structure and element selection

Lesson 2: Dynamic DOM Manipulation

  • Time: 2 hours
  • Topics:
    • Modifying element content (innerText, innerHTML, textContent)
    • Changing attributes (setAttribute, removeAttribute)
    • Creating and appending elements (createElement, append, appendChild)
  • Activities:
    • Code-along: Building a dynamic list using user input
    • Challenge: Create a simple interactive gallery using DOM methods
  • Knowledge Check: Questions on element manipulation and attribute changes

Lesson 3: Advanced DOM Manipulation Techniques

  • Time: 1.5 hours
  • Topics:
    • Removing elements (remove, removeChild)
    • Cloning and replacing elements (cloneNode, replaceChild)
    • Using template literals for dynamic content creation
  • Activities:
    • Code-along: Building a dynamic content card generator
    • Hands-on exercise: Create a blog post editor using JavaScript and the DOM
  • Knowledge Check: Questions on advanced DOM manipulation methods

Lab: Dynamic Content Creation

  • Time: 1.5 hours (asynchronous)
  • Task: Develop a dynamic to-do list application with features to add, edit, and delete tasks.
  • Objective: Demonstrate the ability to manipulate the DOM dynamically based on user input and actions.

Lesson 4: Event Handling Fundamentals

  • Time: 2 hours
  • Topics:
    • Understanding event flow (capturing and bubbling)
    • Using addEventListener for attaching event handlers
    • Common events (click, input, submit, change)
  • Activities:
    • Code-along: Implementing a click counter using event listeners
    • Exercise: Create an interactive form that updates the UI in real-time based on user input
  • Knowledge Check: Questions on event types and event handling

Lesson 5: Form Validation and User Input

  • Time: 2 hours
  • Topics:
    • Built-in HTML form validation attributes
    • JavaScript form validation techniques
    • Handling form submission and preventing default actions
  • Activities:
    • Code-along: Creating a signup form with real-time validation
    • Exercise: Build a custom validation function for a contact form
  • Knowledge Check: Questions on form validation methods and user input handling

Lesson 6: Working with Local Storage

  • Time: 1.5 hours
  • Topics:
    • Introduction to web storage (local storage vs. session storage)
    • Storing and retrieving data using localStorage
    • Persisting user preferences and application state
  • Activities:
    • Code-along: Creating a theme toggle switch that saves user preferences
    • Exercise: Build a note-taking app that saves notes to local storage
  • Knowledge Check: Questions on local storage and data persistence

Lab: Form Validation and DOM Manipulation

  • Time: 2 hours (asynchronous)
  • Task: Create a fully validated registration form with custom error messages and real-time feedback.
  • Objective: Demonstrate proficiency in form validation and user input handling using the DOM.

Final Assessments

Knowledge-Based Assessment (KBA)

  • Time: 1.5 hours (asynchronous)
  • Format: Multiple-choice and short-answer questions
  • Topics Covered: DOM structure, element selection, manipulation, events, form validation, local storage
  • Objective: Assess the learner’s understanding of core DOM concepts and practical application.

Skills-Based Assessment (SBA)

  • Time: 5.5 hours
  • Activity: Build an interactive, dynamic web application that incorporates all key DOM concepts covered in the module.
  • Deliverable: Submit the completed project via GitHub with a README file and a brief reflection on the development process.
  • Rubric: Evaluation based on functionality, code quality, user interface, and use of JavaScript techniques (DOM manipulation, event handling, local storage).

AI-Native Module Notes

This is the AI-Native version of this module, used in UCI 1018.3. It contains the same lessons and assessments as the standard module, with one difference:

- Lab 2 (AI): Interactive Registration Form with a Socratic Tutor replaces Lab 2: Interactive User Registration Form. It develops the same skills within the same time allocation, and adds structured work with AI in the Socratic Tutor role.

Working with AI as Socratic Tutor

In this role the assistant is explicitly forbidden from writing code or giving you direct answers. It asks guiding questions that lead you to your own solution, so the underlying skill remains yours.

Your instructor is the final authority on how this activity is scheduled and graded.

Lesson 1: Introduction to the DOM