Unlock the Ins and Outs of JavaScript Engines and Runtimes

What is a JavaScript Engine?

A JavaScript engine is a program or interpreter which executes JavaScript code. The most common type of JavaScript engine is the one found in web browsers, such as Chrome’s V8 or Mozilla’s SpiderMonkey. These engines are responsible for interpreting and executing JavaScript code. Other JavaScript engines, such as Node.js, can be used to run JavaScript code on a server.

What is a JavaScript Runtime?

A JavaScript runtime is an environment that allows JavaScript code to run. Runtimes provide additional features that enable developers to work with more dynamic programming languages like JavaScript. Examples of JavaScript runtimes include Node.js, React Native, and ChakraCore. Each runtime provides different features depending on how it is used or configured. For example, Node.js provides support for server-side programming whereas React Native provides mobile app development.

How Do JavaScript Engines and Runtimes Work Together?

JavaScript engines and runtimes work together to provide an environment where JavaScript code can be interpreted and executed. The JavaScript engine is responsible for interpreting and executing the JavaScript code; the runtime provides additional features and APIs that leverage the engine, allowing developers to work with more dynamic programming languages such as JavaScript. Additionally, some runtimes allow code to be executed outside of a browser, making them suitable for both client-side and server-side development.