TypeScript Trivia Questions
- ❓ 120+ questions
- 🗂️ Programming
- 🎚️ Easy to expert
- ✨ Free to play
Typed superset of JavaScript. Play TypeScript trivia solo to sharpen your knowledge, or challenge a friend head-to-head in Trivia Tango — every question comes with an explanation so you learn as you play. Questions span every level, from easy warm-ups to expert-level stumpers, so there's a real challenge here however much you already know.
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Sample TypeScript Quiz Questions
A mix of easy, medium and hard — questions run from warm-up to expert, so there's a real challenge at every level. Think you know the answers? Play to find out.
This keyword declares a variable that cannot be reassigned after its initial value is set.
Difficulty: Easy- const
- let
- var
- static
This access modifier makes class members visible only within the class itself.
Difficulty: Medium- protected
- private
- internal
- hidden
This TypeScript technique uses an intersection with an empty object to force type inference.
Difficulty: Hard- type prettifying
- inference forcing
- type expansion
- structure flattening
This primitive type represents textual data enclosed in quotes.
Difficulty: Easy- number
- string
- text
- char
This keyword allows a class to inherit properties and methods from another class.
Difficulty: Medium- inherits
- implements
- extends
- derives
This TypeScript pattern creates a builder that enforces required method calls through changing return types.
Difficulty: Hard- fluent interface
- method chaining
- phantom type builder
- state machine builder
This symbol is used after a variable name to indicate it should have a specific type.
Difficulty: Easy- equals sign (=)
- double colon (::)
- colon (:)
- arrow (=>)
This operator returns the type of a value as a string at runtime.
Difficulty: Medium- instanceof
- typeof
- typeis
- getType
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