JSON Essentials

Web developers interested in creating modern Web applications and Web APIs (Application Programming Interfaces)


Expected Duration
164 minutes

JSON is a data format used mainly on the Web to transmit information between client and server applications. This course covers the JSON format in detail and demonstrates examples of real-world APIs from around the Web that use JSON as their medium for communication.


Introduction to JSON

  • start the course
  • describe the pros and cons of using JSON
  • compare and contrast JSON and JavaScript
  • create a JSON object with all of its supported data types
  • validate a JSON object
  • debug common JSON formatting errors
  • understand why it is unsafe to use the eval function with JSON
  • create JSON objects with arrays and arrays-of-arrays

Using JSON

  • use JSON to make AJAX requests
  • embed a JSONP JavaScript file in a web page
  • use JSON Schema to validate data
  • use the jQuery.getJSON function to retrieve JSON and JSONP data from a server
  • use JSON to represent tabular data
  • implement CORS in node.js service and make a request from the browser
  • create a JSON object that embeds escaped HTML text
  • create and query JSON data in a Postgresql database using the JSON data type

Real-World JSON APIs

  • use JSON to get a stock quote using YQL and JSONP
  • use JSON to get the weather forecast using YQL and JSONP
  • use JSONP to search for public photos on Flickr
  • use JSON to communicate with the Wikipedia API
  • output the contents of an Internet Archive resource as JSON
  • perform a JSON query to translate and use the Microsoft Translator API
  • use JSON to query broadband demographics by latitude and longitude
  • use JSON to perform a search using the Bing API
  • use JSON to query the Bing Maps API

Practice: Using JSON

  • use JSON to query the Bing Synonyms API





Multi-license discounts available for Annual and Monthly subscriptions.