In this course, you’ll enhance your JavaScript skills and learn best practices for efficient and maintainable code. By the end of this course, you'll be able to handle string manipulation, work with regular expressions, and understand advanced topics like closures and bitwise operators. You’ll also improve your problem-solving ability by practicing exercises and applying JavaScript in real-world scenarios.



Intermediate JavaScript & Best Practices
This course is part of JavaScript from Beginner to Expert 2.0 Specialization

Instructor: Packt - Course Instructors
Included with
Recommended experience
What you'll learn
Master JavaScript string manipulation and regular expressions for efficient text processing.
Build interactive web elements like clocks, slideshows, and galleries using JavaScript.
Apply best practices to improve JavaScript performance, security, and maintainability.
Leverage new JavaScript features like nullish coalescing and arrow functions for cleaner code.
Skills you'll gain
Details to know

Add to your LinkedIn profile
September 2025
16 assignments
See how employees at top companies are mastering in-demand skills

Build your subject-matter expertise
- Learn new concepts from industry experts
- Gain a foundational understanding of a subject or tool
- Develop job-relevant skills with hands-on projects
- Earn a shareable career certificate

There are 14 modules in this course
In this module, we will explore various string manipulation techniques in JavaScript. You'll learn how to use string methods for processing text and improve code readability by breaking long strings. We will also cover how to manage special characters in strings using escape sequences.
What's included
2 videos2 readings1 assignment1 plugin
In this module, we will dive into the powerful world of regular expressions in JavaScript. You'll learn how to match patterns within strings and extract data using match() and exec(). Additionally, we will practice applying RegExp to real-world scenarios like validating user passwords.
What's included
3 videos1 assignment1 plugin
In this module, we will focus on working with JavaScript's Date object to handle and manipulate date and time values. You’ll also build a real-time clock as a practical application to gain hands-on experience with time-based JavaScript functionality.
What's included
2 videos1 assignment1 plugin
In this module, we will explore the concept of cookies and their role in storing user data. You'll learn how to create, delete, and retrieve cookies in a browser, along with techniques for managing special characters to ensure data integrity.
What's included
5 videos1 assignment1 plugin
In this module, we will explore JavaScript's dialog window methods, including confirm() and prompt(). These methods will help you interact with users and gather input or make decisions based on their responses, enhancing overall user experience.
What's included
1 video1 assignment1 plugin
In this module, we will explore the various Math methods available in JavaScript for calculations and random number generation. You'll also get hands-on experience by building a random quote generator that demonstrates practical uses of these functions.
What's included
3 videos1 assignment1 plugin
In this module, we will cover how to access and modify the browser's URL. You’ll learn how to dynamically change the location, enabling you to create interactive web applications that respond to the user's browsing experience.
What's included
1 video1 assignment1 plugin
In this module, we will focus on lazy loading for images, a technique that helps improve page load speed by deferring image loading until they are needed. This will enhance both performance and user experience, especially for image-heavy websites.
What's included
1 video1 assignment1 plugin
In this module, we will build interactive projects like an image slideshow, animated transitions, and an image gallery with thumbnails. These exercises will help reinforce your understanding of JavaScript functionality and enhance your front-end development skills.
What's included
5 videos1 assignment1 plugin
In this module, we will explore closures in JavaScript, a key concept that enables data encapsulation and function scoping. You'll see practical examples and learn how closures can be applied in real-world programming scenarios.
What's included
1 video1 assignment1 plugin
In this module, we will delve into bitwise operators and explore their practical applications in JavaScript. This advanced topic will help you understand low-level programming techniques for optimizing performance and solving complex problems.
What's included
1 video1 assignment1 plugin
In this module, we will introduce powerful debugging techniques using Firebug and console commands like console.log() and debugger. Additionally, we’ll explore online tools that streamline testing and sharing of JavaScript code for better collaboration and troubleshooting.
What's included
4 videos1 assignment1 plugin
In this module, we will cover essential best practices for JavaScript performance optimization. You’ll learn strategies like script file management, code compression, and avoiding common pitfalls that will make your code more efficient and maintainable.
What's included
5 videos1 assignment1 plugin
In this module, we will explore the latest JavaScript features, including the nullish coalescing operator, arrow functions for array manipulation, and the modularization of code using export and export default. These updates will help you write cleaner, more efficient JavaScript.
What's included
3 videos1 reading3 assignments1 plugin
Earn a career certificate
Add this credential to your LinkedIn profile, resume, or CV. Share it on social media and in your performance review.
Instructor

Offered by
Explore more from Software Development
- Status: Free Trial
- Status: Free Trial
- Status: Free Trial
- Status: Preview
Why people choose Coursera for their career





Open new doors with Coursera Plus
Unlimited access to 10,000+ world-class courses, hands-on projects, and job-ready certificate programs - all included in your subscription
Advance your career with an online degree
Earn a degree from world-class universities - 100% online
Join over 3,400 global companies that choose Coursera for Business
Upskill your employees to excel in the digital economy
Frequently asked questions
Yes, you can preview the first video and view the syllabus before you enroll. You must purchase the course to access content not included in the preview.
If you decide to enroll in the course before the session start date, you will have access to all of the lecture videos and readings for the course. You’ll be able to submit assignments once the session starts.
Once you enroll and your session begins, you will have access to all videos and other resources, including reading items and the course discussion forum. You’ll be able to view and submit practice assessments, and complete required graded assignments to earn a grade and a Course Certificate.
More questions
Financial aid available,