JavaScript Tutorial Read Discuss Courses Practice Improve Improve Improve Like Article Like Save Article Save Report issue Report JavaScript (JS) is the most popular lightweight, interpreted compiled programming language. It can be used for both Client-side as well as Server-side developments. JavaScript also known as a scripting language for web pages. This JavaScript Tutorial is designed to help both beginners and experienced professionals master the fundamentals of JavaScript and unleash their creativity to build powerful web applications. From basic syntax and data types to advanced topics such as object-oriented programming and DOM manipulation. JavaScript Tutorial Table of Content JavaScript Basics JavaScript Control Flow Statements JavaScript Loops JavaScript Expression and Operators JavaScript Objects JavaScript Functions JavaScript Regular Expression JavaScript OOPs Inheritance and Prototype Chain Memory Management JavaScript Promises Iterators and generators Javascript Validations Javascript Events Exception Handling JavaScript Miscellaneous JavaScript Objects Reference Reason to Learn JavaScript How JavaScript Makes HTML Build Website Better? Things that Makes JavaScript Demanding JavaScript Interview Preparation JavaScript Practice Quiz JavaScript Libraries & Frameworks JavaScript Basics Introduction to JavaScript History of JavaScript JavaScript Code Execution Console in JavaScript JavaScript Versions JavaScript Syntax JavaScript Comments Where to Put JavaScript in HTML JavaScript First Program Hello world Data types Variables let Keyword var Keyword const Keyword JavaScript Control Flow Statements return Statement break Statement continue Statement throw Statement if…else Statement switch Statement try…catch Statement JavaScript Loops for Loop do…while Loop while Loop for…in Loop for…of Loop labeled Statement break Statement continue Statement JavaScript Expression and Operators Assignment operators Comparison operators Arithmetic operators Bitwise operators Logical operators BigInt Operators String operators Ternary operator Comma operator Unary operators Relational operators JavaScript Objects Array String Date Number Math Object Boolean JSON Map Set Atomics BigInt Promise Proxy Reflect WeakMap WeakSet JavaScript Functions Functions in JavaScript Function Definitions Function Call Function Expression Pure Functions Function Parameters Function Invocation Anonymous Functions Arrow functions Nested functions Function Generator Function binding Async/Await Function Hoisting JavaScript Regular Expression Regular expressions RegExp [abc] Expression RegExp S Metacharacter RegExp m Modifier RegExp ?! Quantifier RegExp {X,Y} Quantifier RegExp test() Method RegExp [^0-9] Expression JavaScript Events Events onclick Event dblclick Event onload Event onresize Event onblur Event onchange Event Focus Event Clipboard Event onscroll Event JavaScript OOPs Classes In JavaScript JavaScript class expression Object Constructors Static Methods JavaScript Prototype JavaScript Constructor Method JavaScript Encapsulation Inheritance Polymorphism Abstraction Inheritance and Prototype Chain Explain Prototype Inheritance in JavaScript Understanding the Prototype Chain in JavaScript Object Constructors Prototype in JavaScript Memory Management Memory Management in JavaScript Garbage Collection JavaScript Promises Promise Promise Chaining JavaScript Errors Throw and Try to Catch Class compositions in JavaScript JavaScript Iterators and generators Iterator Function Generator JavaScript Validations Form Validation Email Validation Exception Handling Exception Handling try-catch Statement Promises async/await JavaScript Miscellaneous this Keyword Strict Mode setTimeOut() and setInterval() Method typeOf Operator Debugging Local Storage Callback Closures defer scope Void JavaScript Objects Reference This section contains the list of all properties and methods of all JavaScript objects. Array ArrayBuffer Atomics BigInt Boolean and dataView Date Error Function Generator Intl JSON Map Math Number Object Promise Proxy Reflect RegExp String Symbol WeakMap WeakSet Expressions Reason to Learn JavaScript JavaScript is used by many developers (65% of the total development community), and the number is increasing day by day. JavaScript is one such programming language that has more than 1444231 libraries and increasing rapidly. It is preferred over any other programming language by most developers. Also, major tech companies like Microsoft, Uber, Google, Netflix, and Meta use JavaScript in their projects. To learn more reasons, please refer Reasons to Learn JavaScript article. How JavaScript Makes HTML Build Website Better? JavaScript is an advanced programming language that makes web pages more interactive and dynamic whereas HTML is a standard markup language that provides the primary structure of a website. It simply adds dynamic content to websites to make them look good and HTML work on the look of the website without the interactive effects and all. It manipulates the content to create dynamic web pages whereas HTML pages are static which means the content cannot be changed. It is not cross-browser compatible whereas HTML is cross-browser compatible. It can be embedded inside HTML but HTML can not be embedded inside JavaScript. Things that Makes JavaScript Demanding JavaScript is the most popular and hence the most loved language around the globe. Apart from this, there are abundant reasons to become the most demanding. Below are a listing of a few important points: No need for compilers: Since JavaScript is an interpreted language, therefore it does not need any compiler for compilation. Used both Client and Server Side: Earlier JavaScript was used to build client-side applications only, but with the evolution of its frameworks namely Node.js and Express.js, it is now widely used for building server-side applications too. Helps to build a complete solution: As we saw, JavaScript is widely used in both client and server-side applications, therefore it helps us to build an end-to-end solution to a given problem. Used everywhere: JavaScript is so loved because it can be used anywhere. It can be used to develop websites, games or mobile apps, etc. Huge community support: JavaScript has a huge community of users and mentors who love this language and take it’s legacy forward. JavaScript Interview Preparation JavaScript Interview Questions and Answers | Set 1 JavaScript Interview Questions and Answers | Set-2 JavaScript Interview Questions and Answers | Set 3 JavaScript Practice Quiz JavaScript Course | Practice Quiz-1 JavaScript Course | Practice Quiz-2 JavaScript Course | Practice Quiz-3 JavaScript Libraries & Frameworks Libraries ReactJS jQuery p5.js D3.js Collect.js Underscore.js Lodash Tensorflow.js Technology ES6 TypeScript Frameworks AngularJS Vue.js NuxtJS Please go through our Free JavaScript Course to learn complete JavaScript and JavaScript Examples and JavaScript Programs link to see the wide collection of JavaScript programming examples. The examples are categorized based on the topics, including objects, functions, arrays, DOM, and many more. Recent Articles on JavaScript Whether you're preparing for your first job interview or aiming to upskill in this ever-evolving tech landscape, GeeksforGeeks Courses are your key to success. We provide top-quality content at affordable prices, all geared towards accelerating your growth in a time-bound manner. Join the millions we've already empowered, and we're here to do the same for you. Don't miss out - check it out now! Last Updated : 11 Dec, 2023 Like Article Save Article Next Introduction to JavaScript Please Login to comment...
