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JavaScript Online Tests to Identify and Hire Top Talent

JavaScript Online Test evaluates a candidate's front-end development skills and programming knowledge in JavaScript language. Using this scripting language, candidates can be assessed on their ability to code for both web and application development.

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Inside This JavaScript Developer Test

Mercer | Mettl's JavaScript online test is used to assess a candidate's skills in adding interactive behaviour to webpages, creating webpages and apps as well as developing server applications and building web servers. 

Designed by subject matter experts, the JavaScript assessment evaluates the understanding of a candidate on three levels - basic, intermediate and advanced. The test is holistically designed to test an applicant's knowledge as well as applied skills.

This 60-minutes tests includes 18 MCQs and 2 coding problems to be solved on our front end simulator. Mercer | Mettl's JavaScript coding test assesses a candidate's Front End Development Skills and fundamental concepts of JavaScript. 

The following roles can be primarily evaluated using this JavaScript assessment:

  • JavaScript Developer
  • Software Developer 1 (JavaScript)
  • Front-End Developer (JavaScript)


This Javascript Developer Test is a part of following Skills Libraries

The JavaScript skills assessment allows evaluators to test the programming skills of candidates in implementing front-end logic to web applications using JavaScript. Use this JavaScript skill test to reduce candidate screening time and find top talent.

Javascript Developer Competency Framework

Get a detailed look inside the test

Javascript Test Competencies Under Scanner

Javascript Developer

Javascript Development


Hands on Java Programming

Assesses a candidate's coding skills on a robust coding simulator by giving real-world problems and evaluate their hands-on experience and capability to code in a desired language.

Front End Development Skills

Practical hands-on coding questions for assessing the front-end web development skills of a candidate in Javascript basics.

Java Basics

This test assess the following skills on intermediate and difficult level; Strings and Methods, Flow of Control, Classes Objects and Methods, OOPS Concepts, Interfaces and Inheritance in Core Java and Java - OOPS.


This test assess the following skills on intermediate and difficult level; Arrays, Scopes and Namespaces, Parsing, Events and Event Handlers, Object Usage and Properties application, Forms along with HTML and Links in Javascript.


Hands-on Java programming

The JavaScript Technical Test assesses candidates' coding skills on a simulator by giving real-world problems and measuring their hands-on experience and capability to code in the desired language.

Frontend development skills

The test consists of hands-on coding questions for evaluating a candidate's frontend web development skills and knowledge of JavaScript basics.

Java basics

The JavaScript Assessment aims to understand a candidate's proficiency in the given skills - Flow of Control, Strings and Methods, OOPS Concepts, Classes Objects and Methods, Interfaces and Inheritance in Core Java and Java - OOPS.


This JavaScript Test gauges the candidate's strengths in these skills: Arrays, Parsing, Events and Event Handlers, Object Usage, Scopes and Namespaces and Properties application, Forms along with HTML and Links in JavaScript programming.

Customize This Javascript Developer Test

Flexible customization options to suit your needs

Set difficulty level of test

Choose easy, medium or hard questions from our skill libraries to assess candidates of different experience levels.

Combine multiple skills into one test

Add multiple skills in a single test to create an effective assessment. Assess multiple skills together.

Add your own questions to the test

Add, edit or bulk upload your own coding questions, MCQ, whiteboarding questions & more.

Request a tailor-made test

Get a tailored assessment created with the help of our subject matter experts to ensure effective screening.

The Mercer | Mettl Javascript Test Advantage

The Mercer | Mettl Edge
  • Industry Leading 24/7 Support
  • State of the art examination platform
  • Inbuilt Cutting Edge AI-Driven Proctoring
  • Simulators designed by developers
  • Tests Tailored to Your business needs
  • Support for 20+ Languages in 80+ Countries Globally

Javascript Test Can Be Setup in 4 Steps

Step 1: Add test

Add this test your tests

Step 2: Share link

Share test link from your tests

Step 3: Test View

Candidate take the test

Step 4: Insightful Report

You get their tests report

Frequently Asked Questions (FAQs)

The test is tailored for recruitment, and Mercer | Mettl can benchmark custom sample sets. Please share the request for assistance.

In the <head> or in the <body> section of an HTML page, or in both.

Yes, JavaScript is an interpreted programming language. 

The <script> tag is used for the same.

JavaScript is a full-fledged dynamic programming language that can be used to provide dynamic interactivity on websites. 

It's both frontend and backend; the reason is that it's used across the web development stack.

JavaScript® is an object-oriented, lightweight, interpreted language with first-class functions.

The dollar sign ($) is called a JavaScript identifier.

Some of the salient features are listed below:   

  •  Light Weight  
  •  Functional  
  •  Dynamic Typing  
  •  OOP support  
  •  Interpreted  
  •  Platform independence  
  •  Prototype-oriented  
  •  Async operations  
  •  Client-side validation  
  •  Effective browser control

JS is used to create appealing websites and to develop browser-based games and mobile apps for different operating systems.

The test() method checks for approximate string matching, and if there's a match, the method returns true; otherwise, it returns false.

In the event bubbling process, the element triggers the event and bubbles up to the contained elements in the hierarchy.

Yes, JavaScript is a case-sensitive language.

The NaN property is referred to as the "Not-a-Number" value. 

The 'null' value refers to the intended omission of any object value. 

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