TypeScript for Beginners - const Prefix

The video tutorial explains the concept of constants in programming, comparing their usage in C, Java, and TypeScript. It demonstrates how to define a constant in Visual Studio Code and highlights the importance of using constants to prevent accidental changes in code. The tutorial also discusses TypeScript's current handling of constants, noting that while it doesn't strictly enforce them, it provides warnings. Finally, it explains that JavaScript code generated from TypeScript does not include the constant keyword due to browser compatibility issues.

What is the main purpose of using a constant in programming?

• To make the code run faster

• To prevent the variable from being changed

• To use less memory

• To allow the variable to be changed later

In Java, which keyword is used to define a constant?

• immutable

• static

• final

• const

What is the benefit of using the constant keyword in TypeScript?

• It makes the code compile faster

• It prevents accidental changes to variable values

• It allows the variable to be used in multiple files

• It reduces the size of the code

Why does TypeScript not strictly enforce constants?

• Because it is too complex

• Because it is not necessary

• Because it is a new feature

• Because it is not supported by all browsers

What happens when a constant is used in a browser that does not support ES6?

• The code will not run

• The constant will be ignored

• A warning will be shown

• The code will run without issues