Test Your TypeScript Basics Knowledge - Can You Ace Our 25-Question Quiz?

1/25 Which of the following companies has developed and designed TypeScript?

2/25 What is the typing principle of typescript?

3/25 All are backported features of TypeScript, except….

4/25 Which of the statements below is true about the variables in Typescript?

5/25 Which of the following is a Typescript feature?

6/25 In TypeScript, which method decorator can be used to bind 'this' to the class instance?

7/25 How does TypeScript handle null and undefined by default in strict mode?

8/25 What is the TypeScript utility type used for creating a type with all properties of an existing type set to optional?

9/25 How can TypeScript enhance code maintainability compared to JavaScript?

10/25 Which TypeScript feature is primarily used for extending classes and interfaces?

11/25 How does TypeScript enhance debugging in comparison to plain JavaScript?

12/25 What is the primary use case for TypeScript decorators?

13/25 TypeScript is a superset of which language?

14/25 Which is not a valid way to declare a variable in TypeScript?

15/25 In TypeScript, which operator is used for type assertion?

16/25 What TypeScript feature allows for defining a contract for a class to implement?

17/25 In TypeScript, what is a Tuple?

18/25 In TypeScript, which is used to define a variable that can hold any type but only one type once set?

19/25 Which TypeScript utility type constructs a type by picking the set of properties from another type?

20/25 What is the purpose of the 'never' type in TypeScript?

21/25 What TypeScript feature allows for custom type checks at compile time?

22/25 Which is not a valid TypeScript data type?

23/25 In TypeScript, which access modifier makes a member visible only within its containing class?

24/25 In TypeScript, what is the purpose of the 'keyof' keyword?

25/25 What TypeScript feature allows you to conditionally select a type?