JavaScript Professional Developer Certification

About this certification

The JavaScript Professional Developer Exam is designed for individuals seeking to solidify their foundational understanding of JavaScript, a critical skill for web development and software engineering. This exam targets those who are either new to JavaScript or looking to formalize their knowledge and expertise in this versatile programming language. Achieving certification in JavaScript Essentials gives employers confidence in your ability to write, analyze, and understand JavaScript code, enhancing your potential for roles in web development, application development, and other related fields.

What you're expected to know

• Core JavaScript syntax, variables, data types, and operators
• Control flow using conditionals, loops, and functions
• Working with the DOM to create, modify, and style elements dynamically
• Handling events, user interactions, and form validation
• Fetching and processing data using APIs, JSON, and asynchronous programming
• Using arrays, objects, and built-in methods to solve real problems
• Understanding modules, script organization, and maintainable code structure
• Building interactive components and simple applications using modern JavaScript

Recommended experience

Candidates should have 0–6 months of hands-on practice writing JavaScript, including basic scripting, DOM interaction, and building simple interactive features through coursework, bootcamps, self-study, or on-the-job practice.