JavaScript APIs and JSON: Fetching and Manipulating Web Data — PickAClass
3.5 (2) ⏱ 2h 36m 📚 26 lessons 🎧 Audio version

JavaScript APIs and JSON: Fetching and Manipulating Web Data

Learn how to request data from web APIs, parse complex JSON structures, and dynamically update web page content using modern asynchronous JavaScript.

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About this course

In modern web development, static pages are no longer enough. To build interactive web applications, you must know how to connect to external servers, retrieve data, and display it dynamically. This course guides you through the process of working with JavaScript APIs, AJAX, and JSON. You will learn how to read and write JavaScript objects and arrays, fetch data from public APIs, and update your web pages in real-time without reloading. What you'll learn: - Understand the foundational concepts of JSON, JavaScript objects, and nested arrays. - Fetch data from external web APIs using modern asynchronous JavaScript, including Promises and Async/Await. - Parse and manipulate complex JSON data structures to extract the exact information you need. - Update web page elements dynamically using modern DOM manipulation techniques. - Handle API errors and network failures gracefully to ensure a smooth user experience. - Apply these concepts to integrate real-world API data into your web projects. You will start with the fundamental terminology of objects and arrays before moving on to asynchronous requests, modern Fetch API patterns, and practical DOM updates. The written explanations and step-by-step code analysis ensure you grasp both the theory and the practical application. This course is designed for beginner web developers who have a basic understanding of HTML, CSS, and elementary JavaScript, with no prior experience in APIs or asynchronous programming required. Start reading today to unlock the power of dynamic web data and take your JavaScript skills to the next level.

What you'll get

  • 📜 Certificate of completion
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  • 💬 Personal AI tutor
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  • 🎧 Audio version included
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  • 📱 Phone or computer
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  • 💸 14-day refund
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  • Short & focused
    2h 36m of practical content

Certificate of completion

Every course you complete on PickAClass issues a credential like this — original, with its own code, verifiable by URL, and detailed about what was actually demonstrated.

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Certificate of Mastery
This certifies that
Name Surname
has successfully demonstrated mastery of
JavaScript APIs and JSON: Fetching and Manipulating Web Data
Skills demonstrated
Behavioral pattern analysis
Foundational
1.2 hrs
Decision-architecture frameworks
Proficient
1.4 hrs
A/B test design
Proficient
1.7 hrs
Behavioral copywriting
Advanced
1.9 hrs
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PickAClass — Name Surname
JavaScript APIs and JSON: Fetching and Manipulating Web Data
Page 2 of 2
Performance detail
Coursework summary
Lessons completed 14 / 14
Practice questions 26 / 28
Assignments submitted 4 (avg 4.5 / 5)
Capstone project Reviewed — 4.6 / 5
Total practice 6.2 hrs
Performance benchmark
Cohort rank Top 12% of 1,625
Time to completion 11 days (median: 22)
Mastery score 91 / 100
Practice-question score 94%
Skill verification Verified Skill Path
Verify this credential
pickaclass.com/certificates/PCC-2026-X4F7-AP19
Issued under the academic standards of PickAClass. Skill levels reflect assessed performance against the course's competency rubric. This is an original credential of this platform.

Reviews (2)

Aisha Munirah binti Mohd Nasir MY Verified learner
★ 2 · July 3, 2026

Pretty informative. I liked the practical application examples, though the initial setup took longer than I expected.

علي بن أحمد بن راشد آل ثاني QA
★ 5 · May 27, 2026

This course exceeded my expectations. The real-world applications discussed are incredibly useful. Great job!

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Just a phone or computer with internet. No installs, no special hardware.

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By card via Stripe. We don’t store card details — Stripe handles them securely.

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Yes — full refund within 14 days, no questions asked.

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Forever. Once you purchase, the course is yours to revisit anytime.

Will I get a certificate? +

Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.

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