TypeScript Trivia Questions
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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.
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Sample TypeScript Questions
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This keyword declares a variable that cannot be reassigned after its initial value is set.
- const
- let
- var
- static
This primitive type represents textual data enclosed in quotes.
- number
- string
- text
- char
This symbol is used after a variable name to indicate it should have a specific type.
- equals sign (=)
- double colon (::)
- colon (:)
- arrow (=>)
This type represents both whole numbers and decimal values in TypeScript.
- number
- int
- float
- decimal
This type can only hold the values 'true' or 'false'.
- bit
- binary
- flag
- boolean
This file extension indicates a TypeScript source file.
- .js
- .ts
- .tsx
- .typ
This keyword is used to define a reusable block of code that can be called by name.
- function
- method
- procedure
- routine
This type represents the absence of any value and is commonly used as a function's return type when it doesn't return anything.
- nothing
- void
- empty
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