The video tutorial explains the concept of modules in JavaScript, highlighting the lack of native module support in earlier versions and the workaround using script tags. It introduces libraries like CommonJS for module loading, allowing functions and properties to be exported and imported between files. TypeScript's inbuilt support for module loading is discussed, with a focus on its default use of CommonJS and the ability to configure other systems. The tutorial concludes with an overview of module support in JavaScript ES6 and higher, preparing learners for hands-on practice in upcoming lectures.

What is one way to use functions from one JavaScript file in another?

• By using the script tag to include the file

• By copying and pasting the code

• By renaming the file

• By using HTML comments

Which library is mentioned as a module loading system for JavaScript?

• Node.js

• CommonJS

• React

• Angular

How can JavaScript files be treated as modules?

• By renaming the files

• By using CSS styles

• By exporting and importing functions and properties

• By using HTML tags

What is the default module loading system used by TypeScript?

• AMD

• UMD

• CommonJS

• ES6 Modules

Which version of JavaScript introduced support for modules?

• ES6

• ES5

• ES8

• ES7