TypeScript and JavaScript Online Test

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The TypeScript and JavaScript online test assesses candidates' knowledge of programming in the languages of the web: JavaScript and TypeScript.

It's an ideal test for pre-employment screening. A good web developer needs to be knowledgeable of the features and structures of JavaScript and the potential benefits that TypeScript offers in web page scalability and encapsulation.

This test requires candidates to develop solutions in JavaScript and answer multiple-choice questions regarding the features of the TypeScript compiler.

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Free Sample Questions for TypeScript and JavaScript Test

Our sample questions are free for companies to use on a trial plan. See more about our premium questions for paid plans below.

Color Type

2min
  -  
Easy  
  -  
MCA

TypeScript Arrays OOP Public

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.

(Select all acceptable answers.)

Ensure

3min
  -  
Easy  
  -  
CODE

JavaScript Error handling Language Public

Implement the ensure function so that it throws an error if called without arguments or the argument is undefined. Otherwise it should return the given value.

Uppercase Types

3min
  -  
Easy  
  -  
MCA

TypeScript OOP Types Public

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();

(Select all acceptable answers.)

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Premium Questions for TypeScript and JavaScript Test

TestDome offers a premium questions library with 1000+ unique, hand-crafted questions whose answers can’t be found online. If you spot an answer somewhere online, we’ll give you a refund.

Question Names

These premium questions are included in this pre-built test and can be added to any multi-skill test. Please sign up for a paid plan to view the questions in detail.

Filter, Positive Numbers, Function Wrapper, Double, Person, Truthy Expressions, Album, Word Count, New Folder, Log Patch, Loading Bar, Garden Plants, Segment, Hobbies, A Tag, Confirm, Date Transform, Height, Hide Button, Log Parser, Paragraph, Product Rating, Products, Row Appender, Scale Font Size, Snapshot, Username, Vectors, Timer, Screen, Array Search, Post Comment, Cards, Reorder, Validation, Table of Names, Open Interface
Covered Skills

Testing of these skills is covered in this pre-built test because they’re closely related. On our paid plan, you can easily create your own custom multi-skill tests.

JavaScript Arrays Closures Exceptions DOM manipulation Event handling TypeScript OOP Spread Language Strings Monkey patching HTML5 Arithmetic Iteration Attribute manipulation Dialog box Regex Objects Asynchronous calls Serialization XML JSON Sorting Content manipulation Styling Callback Bug fixing Classes ECMAScript 2015 Recursion Forms
Recommended Job Roles

These are the job roles that we recommend for the TypeScript and JavaScript online test.

JavaScript Developer
TypeScript Developer
Web Front-End Developer
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