JavaScript AJAX XHR for beginners

Learn how AJAX connects to a server to retrieve data behind the scenes using JSON, XHR, and the DOM to build dynamic web content.

Explore the web developer setup for beginners with Brackets editor, live preview over http, Chrome devtools, and Ajax workflows using json data and api calls.

Learn how JavaScript objects and JSON relate, create object literals, use dot and bracket notation to retrieve and navigate data, and build objects for multiple people.

Explore creating and updating a JavaScript object, accessing data with dot and bracket notation, and working with nested arrays toward JSON-ready structures for Ajax retrieval.

Explore the differences between JavaScript objects and JSON, validate JSON with JSON lint, and format valid JSON with double quotes, arrays, strings, numbers, and billions, while avoiding functions.

Iterate through the array inside a JavaScript object using forEach or a for loop, outputting items to the HTML or console and updating content as it changes.

Learn to create an XMLHttpRequest, open and send a GET request, monitor ready states 0 to 4 and status 200, and read the response text for ajax calls.

Track xhr progress with onreadystatechange, check for readyState four and status 200, then use responseText to display data in the page and log results.

Learn to fetch data from a web API, convert stringified JSON back into usable objects with JSON.parse, and stringify objects again with JSON.stringify to access properties like age.

transform a json string into an object, loop through the data, and render first name and last name into html using a dedicated output function.

Learn to connect to a random user api, fetch a results array, iterate through items, and display images and data on a web page using console output and html integration.

Learn to implement a button-driven ajax xhr flow to load more content, parse json, and render results from an endpoint into the page for dynamic web apps.