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Learner Reviews & Feedback for Introduction to Javascript and Ajax: Building Web Apps by Johns Hopkins University

4.5
stars
46 ratings

About the Course

Do you realize that the only functionality of a web application that the user directly interacts with is through the web page? Implement it poorly and, to the user, the server-side becomes irrelevant! Today’s user expects a lot out of the web page: it has to load fast, expose the desired service, and be comfortable to view on all devices: from a desktop computers to tablets and mobile phones. The course covers fundamental Javascript programming concepts, starting with variables, data types, operators, and control flow mechanisms. It will then teach learners about object-oriented programming in Javascript, object creation using literals and constructors, prototypes, and the intricacies of the 'this' keyword. After which, the course goes into the power of Javascript arrays, using namespaces and IIFEs to prevent variable collisions, and discussion of closures and their use cases in Javascript programming. After covering the fundamental Javascript programming concepts, the course transitions into building dynamic and interactive websites by using Javascript and AJAX (Asynchronous JavaScript and XML) to interact with the Document Object Model (DOM), handle user events, and dynamically update web page content. The course will also talk about the HTTP protocol, different HTTP request methods, and how to work with JSON data. Building on these skills, learners will gain practical, hands-on experience by converting the restaurant website into a dynamic single-page application (SPA) powered by Javascript and AJAX....

Top reviews

HA

Aug 10, 2024

The real-workd projects were invaluable for translating concepts into real-world applications

RC

Jul 28, 2024

It is good overall but the versions used are so outdated, I hope they put a year on when was this course published. Thanks Yaakov!

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1 - 17 of 17 Reviews for Introduction to Javascript and Ajax: Building Web Apps

By Samuel T

Jul 23, 2024

Because this is an "Introduction" I wouldn't expect the phrase "you should already have some programming experience" to be used during the course. I "learned" of course, but man it was a struggle. It may be just my learning style, but I feel like the Ajax portion was rushed so it was hard to follow at times.

By Everardo M

Nov 13, 2024

The first module of this course is great, the second module of this course not so much, on the last section of the second module, there is a gap of information/steps that isn't provided in order for us to follow along on our own (setting up and using firebase, for example). I like to follow along and write the code on my end so to see these steps get completely skipped was really disappointing

By Shizuko K

Nov 12, 2024

Great course! If I had studied more "basic JS syntax" before I started, I would have enjoyed it more.

By Hugo G I

Dec 10, 2024

Good introductory course, although previous coding experience will help you a lot at certain points.

By Hermela A

Aug 10, 2024

The real-workd projects were invaluable for translating concepts into real-world applications

By Doney T

Jul 25, 2024

Really awesome course, I recommend for anyone who wants to learn web development

By Masab H

Aug 6, 2025

It was really a great course took me through noob to pro

By Mr L

Sep 18, 2024

I am so happy for completing my course

By Firdaousse C

May 3, 2025

very good 👌

By JAYASRI M

Sep 8, 2024

nice course.

By Ali A

Mar 10, 2025

Great!

By Tai L M

Mar 8, 2025

good

By Ronald J C

Jul 28, 2024

It is good overall but the versions used are so outdated, I hope they put a year on when was this course published. Thanks Yaakov!

By Vivien R K

Aug 21, 2025

ce cours est parfait

By Deleted A

Aug 8, 2024

Course is pretty outdated. The start is good, but it falls off later. There is too much videos compared to assignments

By ADITHYA

Sep 6, 2025

Not beginner friendly

By Scott W

Dec 31, 2025

This instructor uses peer grading and since 95 percent of students do not understand the assignment content, 95 percent of students are just submitting links that do not go to the course content for submission. Instructor does not teach the skills to be successful in this class. You will have to teach yourself. I graded over 85 peer assignments for the final peer assignment in the last class and not one of them had a properly designed working webpage and approximately 95 percent did not even have an assignment link that went to a viewable page or course assignment content - The content to be graded. You will waste incredible amounts of time teaching yourself and will wait even longer to have your submitted assignments graded. By far the worst class I have ever taken on Coursera. Instructor should have a module on github, but doesn't so most of his students fail from his lack of teaching the essential skill set to complete the class. I would give zero stars if it were possible. Save yourself the agony and avoid this class. I am still waiting for my last assignment to be graded and that was submitted almost a week ago.