JavaScript Mastery Practice Exam

JavaScript Mastery Practice Exam

About JavaScript Mastery Exam

JavaScript is the most popular scripting language for web development and is essential for creating dynamic and interactive websites. From powering website animations to handling advanced functionalities, JavaScript works behind the scenes to enhance user experience. This course will teach you not just how JavaScript works but why it works that way. You’ll dive deep into the fundamentals and progress to advanced concepts like prototypes, execution context, and JavaScript engines. By the end, you’ll be equipped with the skills to confidently build complex websites and applications.

Skills Required

• No prior JavaScript experience is required.
• Basic knowledge of HTML and CSS is helpful but not mandatory.

Knowledge Area

This course covers the following topics:

• Core JavaScript concepts like variables, objects, and functions.
• Advanced features such as prototypes, execution contexts, and lexical environments.
• The relationship between HTML, CSS, and JavaScript.
• Debugging techniques and best practices.
• Writing efficient code using modern JavaScript (ES6+).
• Practical examples and projects to apply your skills.

Who should take This Course?

• Beginners with no prior programming experience.
• Aspiring web developers looking to learn JavaScript from scratch.
• Designers and developers who want to improve their JavaScript knowledge.
• Anyone looking to confidently create interactive and professional websites.

Course Outline

The JavaScript Mastery Exam covers the following topics - 

Domain 1 - Programming, Machine Code, and Interpreters

• Understand what programming is and why order matters in code.
• Learn about machine code, low-level languages, and high-level languages.
• Explore how JavaScript is compiled and interpreted.
• Compare compiling and interpreting and see how JavaScript fits in.

Domain 2 - HTML, CSS, and JavaScript (Plus ECMAScript)

• Learn how HTML, CSS, and JavaScript work together to create web pages.
• Explore practical examples of browser styles and changing button text dynamically.
• Understand what ECMAScript is and dive into ES6 features and beyond.

Domain 3 - JavaScript Engines

• Discover the role of JavaScript engines and why different engines exist.
• Learn about the V8 engine and how JavaScript runs in various environments.

Domain 4 - Writing JavaScript in the Console

• Use the browser console for JavaScript coding and debugging.
• Explore the alert function, console logs, and window object methods.
• Learn about advanced console methods like console.time and console.table.

Domain 5 - IDEs and Text Editors

• Understand what Integrated Development Environments (IDEs) are and how they work.
• Set up a local server and include JavaScript in HTML using the <script> tag.
• Learn the importance of script order and attributes like async.

Domain 6 - Syntax

• Learn JavaScript syntax, including white spaces, semicolons, and comments.
• Understand data types, including strings, numbers, and booleans.
• Explore operators, coercion, and how JavaScript handles data internally.

Domain 7 - Variables

• Understand variables, how they are declared, initialized, and assigned.
• Learn about var, let, and const and their use cases.
• Discover the differences between local and global scopes.

Domain 8 - Dialog Boxes in JavaScript

• Learn to create dialog boxes like alert, confirm, and prompt.
• Explore how to customize dialogs using pure HTML, CSS, and JavaScript.

Domain 9 - JavaScript Dates

• Understand how the Date object works and why the new keyword is important.
• Learn how to create, get, and set dates with practical examples.

Domain 10 - Objects

• Discover what objects are and how they relate to data.
• Learn about object properties, methods, and creating objects using different techniques.
• Understand classes and how they simplify object creation.

Domain 11 - Building a Custom Polyfill

• Learn what polyfills are and why they’re important for browser compatibility.
• Build a custom forEach polyfill and explore callback functions in depth.

Domain 12 - Arrays and Loops

• Understand arrays, their creation, and common methods like push and pop.
• Learn the different types of array methods and how to loop through arrays and objects.

Domain 13 - Prototypes

• Explore what prototypes are and how they enable inheritance in JavaScript.
• Understand the prototype tree and its significance.

Domain 14 - Functions

• Learn how to create and use functions, including arrow functions.
• Understand function expressions versus declarations.
• Discover advanced concepts like the this keyword and Math.random() for generating random numbers.

Domain 15 - JavaScript: THIS, Execution Context, and Lexical Environments

• Learn what the this keyword refers to and how it changes in different contexts.
• Explore the global and functional execution contexts and the execution stack.
• Understand lexical environments with practical examples.

Domain 16 - Teaser: How JavaScript Affects the Critical Rendering Path

• Discover how JavaScript interacts with the DOM and impacts page rendering.
• Learn where to place JavaScript in your HTML to improve performance.