JavaScript Skills

What is JavaScript?

JavaScript skills involve using its scripting language, originally implemented in web browsers, but now widely used server-side via the Node.js platform. It supports a runtime system based on numerical, Boolean, and string values, with built-in, first-class support for dictionary and array types.

It is object-oriented requiring no distinction between types of objects and has a prototype-based object model (vs. a class-based object model). This allows for dynamic inheritance where inheritance can vary for individual objects. In JavaScript, functions can be written without special declarative requirements such as type annotations.

What to use JavaScript for

• Web Development: JavaScript skills are the cornerstone of web development. They’re used for enhancing user interfaces, creating interactive features, and handling client-side logic in web applications.
• Single-Page Applications (SPAs): JavaScript frameworks and libraries like React, Angular, and Vue.js enable developers to build SPAs, providing a seamless and responsive user experience similar to desktop applications.
• Server-Side Development: With platforms like Node.js, JavaScript is used for server-side development. This enables developers to build scalable and efficient web servers and backend APIs.
• Mobile App Development: JavaScript frameworks like React Native and Ionic allow developers to build cross-platform mobile applications using JavaScript, HTML, and CSS.
• Game Development: JavaScript can be used for building browser-based games and interactive multimedia experiences, thanks to libraries like Phaser and Three.js that provide powerful game development capabilities.

Companies of all sizes use Hired to find engineers with JavaScript skills

What is a JavaScript developer?

• Frontend Development Specialist: A JavaScript developer specializes in frontend development, focusing on creating interactive and user-friendly web interfaces using JavaScript, HTML, and CSS.
• Proficient in JavaScript: A JavaScript developer is proficient in the JavaScript language. This includes its syntax, features, and best practices. They also know how to leverage JavaScript frameworks and libraries to build modern web applications.
• Understanding of Web Standards: A JavaScript developer understands web standards and best practices for creating accessible, responsive, and SEO-friendly web content that conforms to industry standards and guidelines.
• Collaborative Team Player: A JavaScript developer collaborates with designers, backend developers, and other team members. Together they implement web designs and user interfaces, ensuring consistency and compatibility across different browsers and devices.
• Continuous Learner: A JavaScript developer is a lifelong learner, following the latest trends and advancements in JavaScript and frontend development. They constantly explore new tools, techniques, and frameworks to improve their skills and stay competitive in the field.

Most important JavaScript developer skills in 2024

• Modern JavaScript Frameworks: Mastery of modern JavaScript frameworks and libraries like React, Angular, and Vue.js for building interactive and responsive web applications.
• Asynchronous Programming: Understanding of asynchronous programming techniques in JavaScript. This includes callbacks, promises, and async/await, for handling asynchronous operations and improving application performance.
• Web Accessibility: Familiarity with web accessibility principles and techniques for creating accessible web content. These include keyboard navigation, screen reader compatibility, and ARIA attributes.
• Responsive Web Design: Knowledge of responsive web design principles and techniques. These create web pages that adapt and respond to different screen sizes and devices. This ensures a consistent user experience across desktops, tablets, and smartphones.
• Debugging and Performance Optimization: Proficiency in debugging JavaScript code and optimizing application performance using browser developer tools, performance profiling, and code optimization techniques.

JavaScript resources

Check out our resources to continue sharpening your JavaScript skills.

Hired profiles help developers showcase their top tech skills

After passing Hired skills assessments, candidates have the chance to showcase their skills to employers. They can opt to present an ‘Assessments’ badge on their profile. Candidates may take various assessments including Programming Skills, Full Stack, Backend, Frontend, iOS, Android, Debugging, DevOps Generalist, and DevOps AWS.

Why should you hire JavaScript developers?

• Enhanced User Experience: JavaScript developers enable you to create dynamic and interactive web interfaces that provide a seamless and engaging user experience, improving user satisfaction and retention.
• Cross-Platform Compatibility: JavaScript developers enable you to build web applications that work across different browsers and devices, thanks to JavaScript’s cross-platform compatibility and the availability of responsive web design techniques.
• Scalability and Performance: JavaScript developers enable you to build scalable and high-performance web applications, leveraging JavaScript frameworks, asynchronous programming techniques, and performance optimization strategies.
• Innovation and Flexibility: JavaScript developers bring innovation and flexibility to your projects. They leverage the vibrant ecosystem of JavaScript libraries, frameworks, and tools to explore new ideas. This also helps them solve complex problems and deliver cutting-edge solutions for the evolving needs of users and businesses.
• Commitment to Quality: JavaScript developers write high-quality and maintainable code. They also follow best practices, write comprehensive tests, and embrace code reviews and continuous integration. This ensures software quality and reliability.

Assess tech candidates for JavaScript skills

Looking for candidates skilled in JavaScript? Technical assessments are a multi-pronged solution. They allow you to streamline the hiring process and reduce bias with tech skill-focused benchmarks. 

Hired Assessments offers a library of hundreds of questions and customizable coding challenge campaigns tailored to technical preferences. Centralize and standardize your evaluation process as you surface top talent with specific, hard-to-find skills.

See how Mastercard and Axon used Hired Assessments to vet top candidates.