Available languages : English, French

As of 2022, 98% of all websites on the World Wide Web use JavaScript on the client side for implementing advanced webpage behaviors like automatically displaying content updates, animating 2D/3D graphical objects, and controlling various types of multimedia. Whether you’re a web developer, a web designer, a full-stack developer, or an application programmer, there’s reason to show off your proficiency by earning a JavaScript certification from an industry-recognized name with an international appeal: Tosa.

The Tosa JavaScript industry-recognized certification determines and validates a candidate’s proficiency and skill level in JavaScript’s key features, such as creating and using variables, recognizing and manipulating global objects, creating asynchronous variables, and array operations. The Tosa JavaScript certification supports students, trainees, employees, or jobseekers in their employment, professional, or academic objectives.

There are no eligibility requirements to take a Tosa certification exam. In K-12, we recommend using Tosa JavaScript certifications as part of a course or curriculum starting at grade 9.

Looking for a pre-employment test on JavaScript? Please visit Isograd Testing Services website.

Tosa assessments and certification exams on JavaScript

Assessments are not required to be proctored when taken remotely, while certification exams must be taken in-person or via our remote proctoring solution.

Assessment test Certification exam
Number of questions 25 35
Duration 60min 90min
Exam protocol Taken online Taken online under proctored conditions, in-person or via our remote proctoring system
Results Skill level on a 1 to 5 scale. Detailed skills reports Score on a 1 to 1000 scale. Diploma delivered within 5 business days

Skills Badging with Credly

We partnered with Credly to help our earners share their new certification, and the skill set associated with it, on their resumes, CVs, or professional social media profiles. You can earn a skills certification badge from Credly when you score "Productive" level or higher on the Tosa JavaScript Certification Exam.

Available Badges for JavaScript

Skill Domains Assessed

Language and syntax

This domain covers the main characteristics and specificities of the language. It also includes questions related knowing basic functionalities and syntax as well as managing the inputs, outputs and errors of a program.

Data structures and objects

This domain includes questions on creating and manipulating primitive objects, embedded objects or more complex custom objects. It also covers the understanding and manipulation of the properties of an object and the prototype of objects.

Packages and APIs

Questions in this domain cover creating shareable and reusable features, retrieving data from a server, creating and manipulating asynchronous functions as well as managing errors and successes during the execution of a program.

Applied JavaScript

This domain includes questions about writing a program that handles different types of data in an optimized way, understanding and finding errors within a code and correcting them but also searching for information in the documentation. Lastly, questions cover the reading and understanding of a stack-trace to deduce the origin of a bug.

Certification Exam Detail

The Tosa JavaScript Certification Exam relies on a database of more than 160 questions. It is composed of a mix of 35 questions, including multiple-choice, interactive questions, and live coding exercises, and lasts 90 minutes. The algorithm adapts to each answer of the candidates to adjust the difficulty level of the questions until they reach the exact definition of the candidates’ level by calculating the limit of their skills. Candidates receive a numeric score out of 1000 points associated to a proficiency level on a five-level scale. Candidates who score between 1 and 550 points don't earn the certification. They will not receive a diploma but a certificate of completion. Candidates who score 551 points or above earn the certification. They will receive a diploma by email within five (5) business days  and are eligible to receive a Credly digital badge.

The Tosa JavaScript Certification Exam is valid for three (3) years. Once expired, earners must retake the certification to maintain it over time. Earners wishing to demonstrate skills development and personal growth may re-take the exam to improve their score at any time. There is no waiting period between two attempts.

Rules & Technical Requirements

Tosa certifications must be taken under specific proctoring conditions. For more information about Tosa certification exam rules and technical requirements, please visit our dedicated exam policies page or consult the downloadable PDFs below.

Tosa Certification Exam Technical Requirements (PDF) Tosa Certification Exam Rules (PDF)

Prepare For Your Certification Exam

In order to be well prepared for your exam day, we recommend:

  • Taking at least one Tosa assessment test prior to your exam
    The Tosa assessment test, like the certification exam, is an adaptive test composed of a mix of multiple-choice, interactive, and live in-the-application questions. It contains 25 questions and lasts 40 minutes. It does not need to be taken under proctored conditions. Results are delivered on the same 1-to-5 proficiency level scale and includes detailed skills reports to help determine student or candidate strengths and weaknesses before taking the certification exam.
  • Utilizing the free practice tests available on our website
    In addition to our Tosa assessment tests, we offer short practice tests for free. Simply navigate to and click on the “Free practice test” button on the top right of the page, then select which test subject you’d like to practice.
  • Taking a Tosa-aligned course
    We have partnered with several eLearning providers and publishers to provide online courses that align with the Tosa certification objectives. To achieve a productive level or higher for a Tosa certification, it requires candidates an average of 150 hours of training and hands-on experience with JavaScript. This average training time depends on their pre-existing skills or knowledge, the expected outcome for the certification (score/level), and the provider.

Need more details ?