JavaScript JSON AJAX API data for web pages Objects Arrays (Udemy.com)
JavaScript code to connect to web APIs and get JSON data use AJAX explore JavaScript Objects and Arrays for JSON
Created by: Laurence Svekis
Last updated February 2023
What you will learn
- learn how to use JSON
- learn how to make AJAX calls in JavaScript
- Access JSON data files and use the content within JavaScript
- Use files to create JavaScript objects on the fly
Course Description
Explore JSON and how you can use JSON data from an API to update your page contents.
JSON is short for JavaScript Object Notation which is the most commonly used data standard format for transferring of data. Its human readable which makes it easy to read. Its used across all modern programming language. Because its based off JavaScript Objects understanding of how to get content from JavaScript object and arrays is essential in being able to better make use of data with JSON.
JSON object can hold a lot of data, in a nest format which can contain objects that can be many levels deep, and arrays that might hold many items.
AJAX is a set of technologies used to connect to server data, and update page contents without page refresh. AJAX is now commonly used to get JSON data and provides an excellent way for web developers to create content rich interactive features for web pages. JavaScript can be used to create page elements, update and manipulate page elements on the fly.
Together JSON AJAX and JavaScript is a powerful set of technologies that can be used to create amazing web experiences.
Includes a bonus 50 page ebook guide - loaded with source code and resources to help you learn.
Explore how AJAX JSON and JavaScript can be applied
JavaScript Objects
JavaScript Arrays
Updating Objects and Arrays
Loop through the data
The JavaScript JSON Object
JSON files and Contents with JavaScript
Async and Await and Promises
AJAX and JSON in JavaScript
Output JSON data into the web page
JSON data from API source using AJAX
GitHub API AJAX
Stackoverflow API connection example
JavaScript is the most in demand programming language on the web today.
Learning how to implement AJAX and use data like JSON formatted data can accelerate the amazing things that JavaScript can do within your web code.
JSON - JavaScript Object Notation is an open standard technology that is used to transmit data in a human readable format. JSON is language independent. It provides a powerful way to move data back and forth. Learning to use JSON data in JavaScript can open the door to really powerful data handling within your applications.
AJAX - asynchronous JavaScript and XML allows you to send and receive data from other files without page refreshing. You can display data and information in response to the User interactions within your webpages. Dynamic content loading without page refreshes.
This course is designed to help you learn how to use these two amazing technologies together. Source files and all the code used within the course is included. Step by Step instruction with examples of how to use JSON formatted data. Turn JSON data into JavaScript objects and use them as needed within your code. Load data the easy way. AJAX allows you to take this data import one step further and load data on the fly within your JavaScript. Course will demonstrate how to do this and a whole lot more. As a bonus the course also covers how to send data to the server.
JSON and AJAX are in demand skills and knowing how to use them will increase what you can do within your web pages.
Instructor Details
- 4.8 Rating
744 Reviews
Laurence Svekis
Hi, I’m Laurence Svekis, and I’m here to help you learn smarter, build real skills, and confidently use AI and modern tools to create amazing things.
I’m a Google Developer Expert (GDE), international speaker, author, and educator specializing in AI-powered learning, Google Workspace automation, and practical development with Google Apps Script and JavaScript. I’ve been teaching online since 2002 and have helped over two million students worldwide develop real-world skills through hands-on courses, books, and workshops.
My passion is learning with AI—using AI not as a shortcut, but as a powerful learning partner. I focus on helping learners understand how things work, how to apply AI responsibly, and how to build tools that solve real problems. Many of my courses explore how AI can act as a tutor, assistant, or productivity booster inside everyday tools like Google Docs, Sheets, and Workspace.
I’m especially known for:
Google Apps Script & Google Workspace automation
Building AI-powered assistants and learning tools
JavaScript for real-world applications
Using AI to improve learning, productivity, and workflows
More courses by Laurence Svekis
Complete Google Workspace (G Suite), Beginner - Advanced (2025)
4.6 (10,757 Reviews)
Provider: Udemy
Time: 23.2h
$84.99
Frontend web developer Modern HTML CSS JavaScript (2025)
4.5 (6,723 Reviews)
Provider: Udemy
Time: 12.2h
$64.99
Web Developer Course HTML CSS JavaScript Learn Web Design (2024)
4.5 (5,865 Reviews)
Provider: Udemy
Time: 5.9h
Free
Google Apps Script Complete Course Beginner to Advanced (2025)
4.7 (3,971 Reviews)
Provider: Udemy
Time: 27.7h
$14.99
Modern Web Design HTML5 CSS3 beginners guide to Websites (2023)
4.4 (1,915 Reviews)
Provider: Udemy
Time: 3h
$11.99
More JavaScript courses
The Modern Javascript Bootcamp Course (2026)
4.9 (13,238 Reviews)
Provider: Udemy
Time: 51.9h
$24.99
Reviews
By Thomas Mullaney on 9/18/2020
This was a great intro course for AJAX and JSON. Course easy to understand and provides recommended tools to use.
By Anonymized User on 4/15/2020
Learn lots in this course. Would recommend it to everyone who wants to learn JSON and AJAX.
By Anonymized User on 3/12/2018
Yes, it is good in basic level. Want more end-to-end project for a bigger understanding.
By Choi gyeongphill on 11/7/2017
Didn't know anything about JSON and AJAX, but I got some hints from this lecture. It was really helpful to me, I would love to learn more now. Thank you so much!
By Shahar Shokrani on 7/13/2017
Great free course very well explained, nice audio, good examples, short lectures and straight to the point!
By Kingshuk Mukherjee on 3/13/2017
This was meant to be a quick hit into the ajax world for me and I got some valuable information from this course. Would have liked him to explain the request and response a little bit more but I think I got what I wanted from this course
By Mark Milner on 9/22/2016
Go intro to Javascript/JSON/AJAX. It was a lot better than the continuing education course that I have taken on the subject of AJAX in the community college and a lot better price wise.
By Lee Dean on 6/9/2016
TL;DR - what was included was very well done, but I was hoping for a bit more. Longer version: The course did a great job of explaining the material and slowly expanding the complexity, adding a bit more in each chapter that dovetailed well with what was before it. The instructor presented the material clearly and provided some good resources that will help with future projects. I've been struggling with JSON in JavaScript and this helped shore up some pieces that were giving me problems. I had hoped the course also covered JSONP. (JSONP enables cross-domain requests with JSON APIs.) Theoretically it's not much more than a JSON call with an extra parameter or two, but getting a good walkthrough of that would have really helped.
By Fiona Ye on 5/21/2016
It's a great course that I learned so far. I like this teach's way to teach a beginner who is starting in Javascript. It make me understanding a hard part of JavaScript and now I'm really what should I be coding and finding a solution when I use JavaScript. Appreciated it that he is a great teacher.
By Jason Miller on 5/20/2016
Just what I have been looking for to help bridge that between acquiring data from an API and parsing that data to make it usable!
Quality Score
No CourseDuck member has rated this course yet. Taken it? Give each part a thumbs up or down.
Overall Score : 96 / 100










