For working professionals
For fresh graduates
- Study abroad
More
View All
- Executive Doctor of Business Administration from SSBM
- Doctorate in Business Administration by Edgewood College
- Doctorate of Business Administration (DBA) from ESGCI, Paris
- Doctor of Business Administration From Golden Gate University
- Doctor of Business Administration from Rushford Business School, Switzerland
View All
- Post Graduate Certificate in Data Science & AI (Executive)
- Gen AI Foundations Certificate Program from Microsoft
- Gen AI Mastery Certificate for Data Analysis
- Gen AI Mastery Certificate for Software Development
- Gen AI Mastery Certificate for Managerial Excellence
- Gen AI Mastery Certificate for Content Creation
View All
- Post Graduate Certificate in Product Management from Duke CE
- Human Resource Analytics Course from IIM-K
- Global Master Certificate in Integrated Supply Chain Management
- Gen AI Foundations Certificate Program from Microsoft
- CSM® Certification Training
- CSPO® Certification Training
- PMP® Certification Training
- SAFe® 6.0 Product Owner Product Manager (POPM) Certification
View All
- Post Graduate Certificate in Product Management from Duke CE
- Professional Certificate Program in Cloud Computing and DevOps
- Python Programming Course
- Executive Post Graduate Programme in Software Dev. - Full Stack
- AWS Solutions Architect Training
- AWS Cloud Practitioner Essentials
- AWS Technical Essentials
- The U & AI GenAI Certificate Program from Microsoft
Free Certificate
Advanced JavaScript for All
Master advanced JavaScript concepts with this free course. Learn about prototypes, scopes, classes, modules, async programming, and more to enhance your web development skills and become a proficient JS developer.
25 hours of learning
ES6
ChatGPT
Callbacks
For enquiries call:
18002102020
Key Highlights Of This Free Advanced JavaScript Course
What You Will Learn
Intermediate Javascript
This session delves into mid-level JavaScript concepts, providing a deeper understanding of core JavaScript behaviors. By mastering these foundational concepts, you'll be better equipped to reason about complex problems and optimize your coding practices.
Topics Covered
- Pass by Value
Primitive data types in JavaScript, such as numbers, strings, and booleans, are passed by value when used in functions. This means that when you pass a primitive to a function, the original value is not altered because a copy of the value is passed. Understanding this concept ensures you're aware of how changes within functions don't impact the original data. - Pass by Reference
Non-primitive data types (such as arrays and objects) are passed by reference. This means that when you pass an object or an array to a function, the function operates directly on the original data. Any modifications inside the function affect the original array or object. This concept is essential to understanding how mutable data behaves differently from immutable types in JavaScript. - Function Prototype
The prototype is the mechanism by which JavaScript objects inherit properties and methods from other objects. Functions themselves are objects, and thus have prototypes. You’ll learn how to use function prototypes to add methods and properties to the prototype chain, allowing all instances of a function to share common behaviors. This knowledge is crucial for object-oriented programming in JavaScript. - Closures
A closure is a function that retains access to variables from its lexical scope, even after the outer function has finished executing. Closures are a powerful feature of JavaScript, enabling functionality such as data encapsulation, creating private variables, and implementing callbacks in asynchronous operations. Understanding closures is crucial for mastering JavaScript’s behavior in event-driven programming and managing state.
- Hoisting
JavaScript hoisting refers to the behavior where variable and function declarations are moved to the top of their respective scopes during execution. It’s important to understand that only declarations are hoisted, not initializations. For example, a function declaration can be called before its definition, but variables initialized with let and const will throw an error if accessed before declaration. This concept helps you avoid common pitfalls related to the sequence of execution in JavaScript.
Intro to ES6
This section introduces ECMAScript 6 (ES6) features, which modernized JavaScript and provided powerful new tools for developers. Mastering these concepts will significantly improve the efficiency and readability of your code.
Topics Covered
- Classes
ES6 introduced a more structured approach to defining classes in JavaScript, providing syntactic sugar over JavaScript’s existing prototype-based inheritance. Classes allow you to create reusable and extendable objects, making the code more modular and easier to maintain. You'll learn how to define constructors, methods, and inheritance within classes, enabling you to write more organized and scalable object-oriented code. - Arrow Functions
Arrow functions provide a concise syntax for writing functions. More importantly, they have a lexical binding of the this keyword, meaning that this inside an arrow function refers to the surrounding context, not the function itself. This eliminates the need for using .bind() or handling these issues in event handlers or callbacks. Mastering arrow functions is essential for writing cleaner and more predictable JavaScript code. - Spread Operator
The spread operator (...) expands elements of an array or object into individual elements. It allows for easy merging of arrays, copying of objects, and spreading function arguments. Understanding how to use the spread operator simplifies code when dealing with data structures, reducing the complexity of manipulating arrays and objects.
- Rest Parameters
Rest parameters (...args) allow functions to accept an arbitrary number of arguments, which are collected into an array. This provides a flexible way to handle functions with dynamic argument lists, such as variadic functions. Rest parameters are particularly useful when working with functions that require flexibility in how many parameters they accept, streamlining the code and reducing redundancy.
Advanced Javascript
In this section, we cover advanced JavaScript topics that go beyond the basics and intermediate concepts. These topics are essential for mastering modern JavaScript and are often encountered in JavaScript-focused interviews and complex coding scenarios.
Topics Covered
- Asynchronous JavaScript
Asynchronous programming in JavaScript allows non-blocking code execution, meaning the program can continue running other tasks while waiting for a process to complete (e.g., fetching data from a server). You’ll learn how JavaScript handles asynchronous operations using event loops and the call stack, which is essential for building responsive and scalable applications. Understanding asynchronous behavior is a key skill for working with APIs, user input, and time-dependent tasks. - Callbacks
Callbacks are functions passed as arguments to other functions, designed to be executed after a task completes. They’re crucial for handling asynchronous code, such as reading files or making HTTP requests. This section will teach you how callbacks work in various scenarios, their strengths, and their drawbacks, such as callback hell. You'll also learn how to manage and structure your callback functions effectively. - Promises
Promises are a modern way to handle asynchronous operations, offering a cleaner and more manageable alternative to callbacks. A promise represents the eventual completion (or failure) of an asynchronous operation. You'll learn how to use .then() to handle successful outcomes and .catch() to manage errors. Promises provide a more readable and manageable way to structure asynchronous code, avoiding the complexities of callback chains. - "Resolve" & "Reject"
The resolve and reject methods control the outcome of a promise. When an asynchronous operation is successful, resolve is called, passing data to the .then() method. If there’s an error, reject is called, which passes an error to the .catch() method. Understanding how to use resolve and reject is essential for handling asynchronous logic in real-world applications and managing errors effectively. - "Then" & "Catch"
.then() and .catch() are used to handle the resolution and rejection of promises. The .then() method executes when a promise is resolved, allowing you to handle the returned data. .catch() is used to handle errors when a promise is rejected. By chaining .then() and .catch(), you can handle multiple asynchronous operations sequentially, keeping the code readable and organized.
- "Async" & "Await"
async and await simplify working with asynchronous code, allowing you to write asynchronous code in a more synchronous style. The async keyword is used to declare a function that returns a promise, while await is used inside async functions to pause execution until the promise is resolved. This modern approach to asynchronous programming improves code readability and reduces the complexity of nested promises, making your code easier to follow and maintain.
Advanced JavaScript Course Certification
Earn and Share Your Certificate
Official & Verifiable
Receive a signed and verifiable e-certificate from upGrad upon successfully completing the course.
Share Your Achievement
Post your certificate on LinkedIn or add it your resume! You can even share it on Instagram or Twitter.
Stand Out to Recruiters
Use your certificate to enhance your professional credibility and stand out among your peers!
Why Enroll in This Free Advanced JavaScript Course
Who Should Enroll in This Free Advanced JavaScript Course?
What Makes This Course Different From Other Courses?
Free vs. Paid Courses: What Sets Them Apart?
Maximize Your Learning Experience
Free Course | Paid Course | |
|---|---|---|
Access to Online Learning |  | |
Certificate at Completion | | |
Live Learning & Instructor Assistance |  | |
Recruitment Services | | |
Referral Benefits | | |
Frequently Asked Questions
Ready to start learning and advance your skills?
upGrad Learner Support
Talk to our experts. We are available 7 days a week, 9 AM to 12 AM (midnight)
Indian Nationals
1800 210 2020
Foreign Nationals
+918068792934
