TypeScript Online Test

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About the test

The TypeScript online test assesses knowledge of programming in the TypeScript language through a series of live coding tasks.

The assessment includes work-sample tasks such as:

  • Applying OOP principles in TypeScript to write reusable code.
  • Using Mixins to build classes from reusable components.
  • Modifying arrays and strings using common built-in functions.

A good TypeScript developer needs a solid understanding of the TypeScript programming language and know how to effectively use its type system.

Sample public questions

Easy
2 min
mca
Public
TypeScript
Arrays
OOP

The following code initializes three types representing the colors: red, green and blue.

type ColorType = [string, number, number, number];
let red: ColorType = ['Red', 1, 0, 0];
let green: [string, number, number, number] = ['Green', 0, 1, 0];
let blue = ['Blue', 0, 0, 1];

Select the statements that are correct.

Easy
3 min
mca
Public
TypeScript
OOP
Types

The following code initializes strings as three different types and attempts to make them uppercase. Which statements about the behavior of the typescript compiler are correct?

let stringType: string = "string type";
stringType.toUpperCase();

let anyType: any = "any type";
anyType.toUpper();
anyType.toUpperCase();

let objectType: Object = "object type";
objectType.toUpperCase();

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Earn a free certificate by achieving top 25% on the TypeScript test with public questions.

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8 more premium TypeScript questions

Garden Plants, Open Interface, Person, Height, Taxable Book, Album, First Not Null, Filter.

Skills and topics tested

  • TypeScript
  • OOP
  • Spread
  • Arithmetic
  • Language
  • Objects
  • Inheritance
  • Union Types
  • Arrays

For job roles

  • TypeScript Developer

Sample candidate report

What others say

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Simple, straight-forward technical testing

TestDome is simple, provides a reasonable (though not extensive) battery of tests to choose from, and doesn't take the candidate an inordinate amount of time. It also simulates working pressure with the time limits.

Jan Opperman, Grindrod Bank

Product reviews

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