TypeScript for Beginners - const Functions

The video tutorial explains the use of the VAR keyword in JavaScript for function declarations and highlights potential issues when functions are reassigned. It demonstrates how using CONST can prevent these issues by making functions immutable, ensuring that their implementation remains unchanged. This practice is becoming common to avoid accidental reassignment and maintain code integrity.

What is the primary purpose of using the 'var' keyword in the context of the video?

• To declare a constant value

• To declare a variable that can be reassigned

• To declare a function that calculates the product of two numbers

• To declare a function that calculates the sum of two numbers

What issue arises when another developer reassigns the 'product' function?

• The function will no longer return any value

• The function will calculate the sum instead of the product

• The function will throw an error and stop execution

• The function will return a string instead of a number

Why is it beneficial to use 'const' when declaring functions?

• It allows the function to be reassigned easily

• It prevents the function from being reassigned

• It makes the function run faster

• It allows the function to accept more parameters

What happens if you try to reassign a function declared with 'const'?

• The function will remain unchanged and an error will be thrown

• The function will be converted to a string

• The function will throw a syntax error

• The function will be reassigned without any issues

In the context of the video, what is the main advantage of using 'const' over 'var'?

• It allows for dynamic typing

• It ensures the function cannot be accidentally reassigned

• It makes the code more readable

• It allows the function to be used globally