JavaScript Concepts and Frameworks

The video provides a comprehensive overview of JavaScript, covering its evolution, usage in web development, performance improvements, and capabilities with Node.js. It explains JavaScript's variables, data types, functions, and methods, including asynchronous programming with async-await. The video also introduces TypeScript for static typing and npm for managing packages, highlighting JavaScript's versatility in both client-side and server-side applications.

Which year was JavaScript the most popular programming language according to the StackOverflow developer survey?

• 2021

• 2020

• 2019

• 2022

What is the primary role of the 'script' tag in an HTML file?

• To define the structure of the webpage

• To style the webpage

• To load JavaScript files

• To link to external resources

What does 'client-side' mean in the context of JavaScript?

• The code runs on the server

• The code runs on the user's computer

• The code is compiled before execution

• The code is written in HTML

Which JavaScript framework is mentioned as being built on JavaScript to facilitate client-side code maintenance?

• Ember.js

• React

• Vue.js

• Angular

How was JavaScript traditionally executed?

• Executed on the server

• Interpreted line by line by the browser

• Transpiled into another language

• Compiled into machine code

Which environment allows JavaScript to run on the back-end?

• Flask

• Node.js

• Django

• Spring Boot

What keyword is used to declare a variable that can be reassigned in modern JavaScript?

• var

• let

• const

• int

What is the purpose of the 'document' object in JavaScript?

• To represent the structure of the HTML

• To handle server requests

• To store user data

• To manage browser cookies

What is the current standard for asynchronous programming in JavaScript?

• Callbacks

• Generators

• Async-Await

• Promises

What does TypeScript add to JavaScript?

• New HTML tags

• Static types

• Dynamic types

• Server-side capabilities