A pure function in JavaScript, ES6, or any other version, is a function that, given the same input, will always return the same output and has no side effects. Here are the key characteristics of pure functions: Here’s an example of a pure function: In the above example, the add function is pure because it … Read more
Immutability is a core concept in functional programming that emphasizes the use of data structures that do not change after they are created. In JavaScript, which supports both functional and object-oriented programming paradigms, immutability involves avoiding modifications to existing data and instead creating new data structures with the desired changes. Key aspects of immutability in … Read more
In JavaScript ES6, a module is a way to organize code into reusable files with well-defined interfaces. It allows you to encapsulate functionality and variables, preventing them from polluting the global namespace. ES6 introduced a standardized module system that provides a cleaner and more organized approach to structuring and managing code. Here are the key … Read more
In JavaScript, a Promise is an object that represents the eventual completion or failure of an asynchronous operation and its resulting value. Promises provide a cleaner and more structured way to handle asynchronous operations compared to callbacks. They are a key feature introduced in ECMAScript 2015 (ES6) and are widely used in modern JavaScript development. … Read more
In JavaScript ES6, the spread operator (…) is a syntactic feature that allows you to spread the elements of an iterable (e.g., an array or a string) or the properties of an object into another array or object. It provides a concise and convenient way to work with arrays, objects, and function arguments. Spread in … Read more
Destructuring assignment is a feature introduced in ECMAScript 2015 (ES6) that allows you to extract values from arrays or properties from objects and assign them to variables in a more concise and readable way. It provides a shorthand syntax for extracting values, making code more expressive and reducing the need for temporary variables. Destructuring Arrays: … Read more
Template strings, also known as template literals, are a feature in JavaScript that allows you to embed expressions inside string literals. They are enclosed by backticks () and can contain placeholders ${expression} that are replaced with the values of the expressions during runtime. Here’s a simple example: Template strings provide a more concise and readable … Read more