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Intermediate JavaScript & Best Practices

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Intermediate JavaScript & Best Practices

Included with

Gain insight into a topic and learn the fundamentals.
Intermediate level

Recommended experience

1 week to complete
at 10 hours a week
Flexible schedule
Learn at your own pace

Gain insight into a topic and learn the fundamentals.
Intermediate level

Recommended experience

1 week to complete
at 10 hours a week
Flexible schedule
Learn at your own pace

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.

Details to know

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Assessments

16 assignments

Taught in English

Build your subject-matter expertise

This course is part of the JavaScript from Beginner to Expert 2.0 Specialization
When you enroll in this course, you'll also be enrolled in this Specialization.
  • 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 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.

The course is structured into several key sections: you’ll start by mastering string manipulation and regular expressions, then move on to working with dates, cookies, dialog windows, and more. You’ll also gain hands-on experience with advanced topics like closures and best practices, including debugging and performance optimization. Each section contains practical exercises that will help reinforce your learning. With extra content on new JavaScript features like the Nullish Coalescing Operator and Arrow Functions, you’ll stay up-to-date with the latest in JavaScript development. This course is designed for intermediate learners, so while it covers foundational concepts, it also delves into the advanced nuances of JavaScript. This course is perfect for developers with a basic understanding of JavaScript who want to level up their skills and improve their coding practices. A general understanding of programming concepts is required, as the course is geared toward intermediate learners who want to improve their proficiency.

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 assignment

2 videosTotal 20 minutes
  • Manipulating a string using String's methods15 minutes
  • Breaking string in many lines for readability and special characters5 minutes
2 readingsTotal 20 minutes
  • Introduction to the Course 'Intermediate JavaScript & Best Practices'10 minutes
  • Full Specialization Resources10 minutes
1 assignmentTotal 15 minutes
  • String - Assessment15 minutes

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 assignment

3 videosTotal 37 minutes
  • Regular expressions22 minutes
  • Regexp match vs exec function5 minutes
  • EXERCISE: RegExp on practical example - testing password in input9 minutes
1 assignmentTotal 15 minutes
  • RegExp - Assessment15 minutes

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 assignment

2 videosTotal 34 minutes
  • Time manipulation with Date object20 minutes
  • Exercise: A Clock on your website15 minutes
1 assignmentTotal 15 minutes
  • Date - Assessment15 minutes

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 assignment

5 videosTotal 29 minutes
  • What are cookies?15 minutes
  • Function for creating cookies5 minutes
  • Function for removing cookies2 minutes
  • Function for finding value of cookie by keyname6 minutes
  • Properly interpreting special characters - EncodeURIComponent method2 minutes
1 assignmentTotal 15 minutes
  • Cookies - Assessment15 minutes

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 assignment

1 videoTotal 6 minutes
  • Confirm and prompt box6 minutes
1 assignmentTotal 15 minutes
  • Dialog Window - Assessment15 minutes

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 assignment

3 videosTotal 15 minutes
  • Rounding numbers and the most useful Math methods7 minutes
  • Randomness4 minutes
  • EXERCISE: Random quotes4 minutes
1 assignmentTotal 15 minutes
  • Math - Assessment15 minutes

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 assignment

1 videoTotal 3 minutes
  • How to get and change location (URL) of your user?3 minutes
1 assignmentTotal 15 minutes
  • Location - Assessment15 minutes

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 assignment

1 videoTotal 10 minutes
  • Loading Images only when needed - save your bandwidth and improve user experience10 minutes
1 assignmentTotal 15 minutes
  • Images - Assessment15 minutes

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 assignment

5 videosTotal 51 minutes
  • Slideshow11 minutes
  • Slideshow animated in JS using CSS property transition5 minutes
  • Animation using setInterval that is supported in every web browser5 minutes
  • Image gallery with thumbnails14 minutes
  • Tooltip - how to create a hint box?16 minutes
1 assignmentTotal 15 minutes
  • Exercises - Assessment15 minutes

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 assignment

1 videoTotal 15 minutes
  • What are closures on a practical example?15 minutes
1 assignmentTotal 15 minutes
  • Closures - Assessment15 minutes

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 assignment

1 videoTotal 17 minutes
  • Bitwise operators17 minutes
1 assignmentTotal 15 minutes
  • Advanced - Optional Topics - Assessment15 minutes

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 assignment

4 videosTotal 14 minutes
  • Firebug3 minutes
  • Debugging with console commands4 minutes
  • Great online tools for testing and sharing your code5 minutes
  • strict mode2 minutes
1 assignmentTotal 15 minutes
  • EXTRA CONTENT 1: Debugging - Assessment15 minutes

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 assignment

5 videosTotal 21 minutes
  • Code performance4 minutes
  • Keeping one .js file3 minutes
  • Compressing JS files4 minutes
  • 7 most common mistakes you should avoid7 minutes
  • Changing IDE coloristics - keep your eyes healthy3 minutes
1 assignmentTotal 15 minutes
  • EXTRA CONTENT 2: Best Practices - Assessment15 minutes

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 assignments

3 videosTotal 29 minutes
  • Nullish Coalescing Operator - ??4 minutes
  • Arrow functions - mapping and filtering arrays11 minutes
  • export vs export default in JS - how to organize code into modules?14 minutes
1 readingTotal 10 minutes
  • Conclusion to the Course 'Intermediate JavaScript & Best Practices'10 minutes
3 assignmentsTotal 90 minutes
  • Full Course Practice Assessment15 minutes
  • NEW JS Features - NEWEST STUFF - Assessment15 minutes
  • Full Course Assessment60 minutes

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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.

If you complete the course successfully, your electronic Course Certificate will be added to your Accomplishments page - from there, you can print your Course Certificate or add it to your LinkedIn profile.

This course is currently available only to learners who have paid or received financial aid, when available.

Yes. In select learning programs, you can apply for financial aid or a scholarship if you can’t afford the enrollment fee. If fin aid or scholarship is available for your learning program selection, you’ll find a link to apply on the description page.

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