Primitive data types, consisting of all data types except object, can only store a single data. Object ‒ for complex data structures written with curly braces.Symbol ‒ provides unique identifiers for objects.Undefined ‒ includes declared but not assigned variables.BigInt ‒ represents integer data of arbitrary length.Boolean ‒ a logical data type with true and false values.Number ‒ covers integer and floating-point numbers between (2^53 – 1) and -(2^53 – 1).For example, “Hello world”, ‘Hello world’, and “Display ‘Hello world’ text”. String ‒ consists of textual data written inside quotes.This is because JavaScript supports the following data types: With JavaScript, a user can interact with web pages and have a better browsing experience.Īdditionally, JavaScript lets you change HTML content and attribute values without reloading the web page first. While you can use only HTML and CSS code to build a website, it will only have a static display. This includes displaying animations, modifying text visibility, and creating dropdown menus. One of JavaScript’s core functions is adding dynamicity to web pages. Keep in mind that Node-OS works best on the Linux operating systems since it’s built on top of the Linux kernel. You can use either the Node.js own web server, Node-OS, or third-party ones like Microsoft Internet Information Services (IIS) and Apache to handle the HTTP requests. The built-in HTTP module allows you to develop a basic HTTP server that displays plain text when users access a web page. Through Node.js, JavaScript lets developers build web servers and back-end infrastructure, saving you time and effort in web server creation. Building Web Servers and Server Applications Node.js is also lightweight enough to serve as a scalable tool for microservices, allowing you to develop a single app comprising small services with individual processes. Node.js can reduce server response time due to its single-threaded nature and non-blocking architecture and omit delays. The implementation of JavaScript code in Node.js also plays an important role in web development. Meanwhile, mobile application development frameworks such as Cordova and Titanium make it possible to create native or hybrid applications. They allow developers to reuse and update code components without affecting each other, function or value-wise. It saves them time and effort from having to code programming features from scratch.Įach JavaScript framework has features that aim to simplify the development and debugging process.įor example, front-end JavaScript frameworks like jQuery and ReactJS improve design efficiency. The development of JavaScript frameworks, consisting of JavaScript code libraries, allows developers to use pre-written JavaScript code in their projects. The following are several basic uses of JavaScript. While it caters to web-based programs the most, JavaScript programming features have other implementations in different areas. Originally run on the client-side, the JavaScript implementation has branched out to the server-side after the Node.js development ‒ a cross-platform server environment built on the Google Chrome JavaScript V8 engine. Today, JavaScript has plenty of frameworks and libraries to simplify complex projects, such as AngularJS, jQuery, and ReactJS. The latter even started developing the first modern JavaScript engine, called V8, which compiles bytecode into native machine code. JavaScript has continued to grow alongside new browsers like Mozilla Firefox and Google Chrome since then. It was a general-purpose scripting language to ensure web pages’ interoperability across different browsers and devices. After Netscape submitted it to ECMA International as a standard specification for web browsers, JavaScript pioneered the release of ECMAScript. The initial versions of the scripting language were for internal use only.
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