JavaScript Coding Test

Test duration:

min

No. of questions:

Level of experience:

Entry Level/Mid

JavaScript Coding Test

The JavaScript Coding Test helps recruiters and hiring managers evaluate a candidate's expertise in core JavaScript concepts and browser-based programming. It enables organizations to streamline hiring for frontend roles by validating skills in event handling, asynchronous programming, closures, and modern ES6+ syntax.

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JavaScript Online Coding Test

JavaScript coding is used for frontend coding requirements like UI customization, HTML rendering, and selective and conditional rendering of dynamic data. JavaScript helps to create interactive web pages and is an essential part of web applications.

JavaScript online coding test helps tech recruiters and hiring managers to assess developers' JavaScript programming skills. JavaScript programming test is designed by experienced subject matter experts (SMEs) to evaluate and hire JavaScript developers per industry standards.

JavaScript coding test contains a coding simulator that will automatically evaluate and provide a score for the candidate's written codes by compiling multiple test cases that generate discrete output. You will also get a detailed report for each test case execution, execution time, and execution memory usage for the program written by the candidate. The Code-Replay feature records the coding screen of the candidate so that the reviewer can understand the coding and thinking patterns of the candidate.

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How it works

Test Summary

JavaScript coding test helps to screen the candidates who possess traits as follows:

Ability to build sustainable code in JavaScript
Ability to use JavaScript data variables and functionalities while creating various programming solutions
Knowledge related to the web-based rendering of dynamic data
Excellent knowledge of using browser-based storage like cookies, sessions, etc

This test may contain coding questions and innovative AI-LogicBox (an AI-based pseudo-coding platform) questions to assess a candidate’s coding skills in a fun and quick way.

Useful for hiring

JavaScript Developer
Frontend Developer - JavaScript
UI Developer - JavaScript

Test Duration

min

No. of Questions

Level of Expertise

Entry Level/Mid

Topics Covered

Dynamic Data

This test evaluates candidates' ability to handle dynamic data in JavaScript, including updating the DOM in real-time and managing asynchronous operations like API calls.

Web-based Storage

This test assesses candidates' knowledge of client-side storage options such as localStorage, sessionStorage, and IndexedDB for preserving state and user data.

Dom Manipulation

This test measures candidates' proficiency in accessing and modifying the Document Object Model using native JavaScript methods to build interactive web interfaces.

Form Validation

This test evaluates candidates' skills in implementing client-side form validations, including input checks, custom error messages, and prevention of invalid submissions.

Events

This test assesses candidates' understanding of JavaScript event handling, including attaching listeners, managing propagation, and building responsive UI interactions.

JavaScript Coding

This test evaluates candidates' core coding abilities in JavaScript, covering variables, functions, loops, conditionals, and ES6+ features like arrow functions and promises.

Sample Question

Choose from our 100,000+ questions library or add your own questions to make powerful custom tests.

Question type

Multiple Option

Topics covered

Function and ArrowFunction

Difficulty

Hard

Question:

Q 1. We have declared a function in two ways in the following code, one normal and the other with an arrow, which generates two alternative scenarios using "this" in the function. let data={
name:"jenifer",
getName:function()
{console.warn("normal",this)},
getNameArrow:()=>{
console.warn("arrow",this)}}
data.getName();
data.getNameArrow();

->Normal function is using parent "this"
-> Arrow function has own "this", he is using both "this"

->Normal function is using child "this"
-> Arrow function has own "this", he is using parent "this"

->Normal function is using own "this"
-> Arrow function has not own "this", he is using parent "this"

->Normal function is not using any "this"
-> Arrow function has own "this", he is using parent "this"