JSON: JavaScript Object Notation

The video tutorial introduces JSON as a nonproprietary data structure commonly used in APIs. It demonstrates a weather application that fetches live data from an API in JSON format. The tutorial explains the code structure, including HTML and JavaScript components, and how to parse JSON data. It also covers creating and displaying HTML dynamically using JSON data and highlights the use of helper functions for data conversion. The video concludes with a brief mention of XML as another data structuring method.

What is JSON primarily used for in web applications?

• Storing images

• Structuring and exchanging data

• Designing user interfaces

• Encrypting data

What is the main purpose of the API key in the weather app?

• To store user preferences

• To authenticate requests to the API

• To style the app

• To display weather icons

How does the app determine the user's location on a laptop?

• Using GPS signals

• Using Wi-Fi signals

• Through IP address lookup

• By asking the user to input their location

What does the geolocation object in JavaScript provide?

• User's latitude and longitude

• User's browser version

• User's operating system

• User's IP address

What format is the weather data received in from the API?

• HTML

• CSV

• JSON

• XML

What is the significance of Unix epoch dates in the app?

• They are used to encrypt data

• They represent time in a standardized format

• They are used to style the app

• They store user preferences

What does the 'fetch' function do in the app?

• It saves data locally

• It logs errors

• It retrieves data from the API

• It styles the app

What is the purpose of the 'K to F' function in the app?

• To convert temperature from Kelvin to Fahrenheit

• To display the weather icon

• To calculate wind speed

• To fetch data from the API

How is the weather data displayed in the app?

• Through a pop-up alert

• As plain text

• Using dynamically created HTML

• In a downloadable file

What is the role of CSS in the weather app?

• To fetch data from the API

• To authenticate the user

• To style the HTML elements

• To convert temperatures