TypeScript for Beginners - Introduction - Functions

The video tutorial explains the concept and usage of functions in programming, highlighting their importance in avoiding code repetition. It provides examples like 'place order' and 'display page' functions. The tutorial covers the syntax for defining functions, including the use of parameters and the function body. It emphasizes TypeScript's strictness with parameter and return types, contrasting it with JavaScript. The tutorial concludes by encouraging hands-on practice to understand functions better.

What is one of the main benefits of using functions in an application?

• They make the code run faster.

• They allow for code reuse and organization.

• They increase the size of the application.

• They make the application more colorful.

Which keyword is used to define a function in TypeScript?

• procedure

• define

• function

• method

What is the purpose of brackets in a function definition?

• To specify the return type

• To enclose the function body

• To indicate the end of the function

• To pass parameters to the function

How does TypeScript handle parameter types in functions compared to JavaScript?

• TypeScript allows any type for parameters.

• TypeScript uses the same type system as JavaScript.

• TypeScript requires explicit type definitions for parameters.

• TypeScript does not support parameter types.

What type of data does a function return if it sums two numbers in TypeScript?

• Array

• Number

• Boolean

• String