JavaScript basics: JavaScript basics in this test cover arrays, objects, strings, and functions. It is important to measure this skill as a strong foundation in these concepts is crucial for writing efficient and effective JavaScript code.
Structuring and styling HTML DOM: This skill involves organizing and designing the structure of HTML elements using DOM (Document Object Model). It is measured to assess the candidate's ability to manipulate and style web page elements dynamically.
Errors and Exception Handling: Errors and exception handling refer to the ability to identify and handle errors in JavaScript code. This skill is essential to ensure smooth execution and maintenance of error-free applications, and thus, is evaluated in the test.
Working with user data and JSON: Assessing how well a candidate can interact with user data and JSON (JavaScript Object Notation) is important to gauge their ability to handle and process user input effectively and efficiently.
ES6: This skill covers advanced JavaScript concepts introduced in ECMAScript 6 (ES6), such as arrow functions, destructuring, and spreads. It is measured to evaluate a candidate's familiarity and proficiency with modern JavaScript syntax and features.
Higher-order functions and closures: Higher-order functions and closures are fundamental concepts in JavaScript that enable functional programming and code reusability. Measuring this skill helps assess a candidate's ability to write clean and maintainable code using these concepts.
OOP: This skill evaluates a candidate's understanding and implementation of Object-Oriented Programming (OOP) principles in JavaScript. It includes knowledge of classes, constructors, and prototypal inheritance, which play a crucial role in building scalable and modular applications.
Asynchronous JavaScript: Assessing a candidate's knowledge of handling asynchronous operations in JavaScript, including the event loop, promises, and async/await, is crucial to determine their ability to write responsive and efficient code that deals with time-consuming tasks.
Handling APIs: This skill measures the candidate's proficiency in consuming and integrating APIs (Application Programming Interfaces) in JavaScript. It includes knowledge of making API requests, handling responses, and parsing data, which are essential for building web applications that interact with external services and databases.