10 JavaScript Concepts Every Developer Should Know
As a JavaScript developer, there are certain concepts that you must be familiar with in order to write clean and efficient code. This article covers 10 of these concepts that every developer should know:
-
Hoisting - This is a JavaScript mechanism where variables and function declarations are moved to the top of their scope before code execution.
-
Closure - A closure is created when a function is defined inside another function, and the inner function has access to the outer function’s variables and parameters.
-
Callbacks - A callback function is a function that is passed as an argument to another function and is executed when the first function is completed.
-
Asynchronous JavaScript - JavaScript is a single-threaded language, but it can handle asynchronous operations using timers, callbacks, and promises.
-
Prototypes and Inheritance - JavaScript uses prototypes to implement inheritance between objects.
-
Scope - The scope determines the accessibility of variables and functions in different parts of a program.
-
ES6 Features - ES6 introduced several new features to JavaScript, including let and const keywords, arrow functions, and template literals.
-
Destructuring - Destructuring is a way to extract values from objects and arrays into individual variables.
-
Currying - Currying is a technique where a function that takes multiple arguments is transformed into a series of functions that each take a single argument.
-
Functional Programming - Functional programming is a programming paradigm that emphasizes the use of functions to solve problems.
By understanding these 10 concepts, you can become a more proficient JavaScript developer and write better code.