> For the complete documentation index, see [llms.txt](https://justin-se.gitbook.io/justin-se-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://justin-se.gitbook.io/justin-se-docs/javascript/runtime.md).

# Runtime

## Runtime

Common ServerSide Runtime:

* [Node](https://nodejs.org/en)\
  most used offline & server side js runtime.
* [Bun](https://bun.sh/)\
  a young runtime born in 2014, built for better performance and compatibility.\
  at the time, that's a vision not a fact.
* [Deno](https://deno.com/)\
  a rumour said deno created because node's author compiling new version of node but spell it wrong.

## JS Engines

| Engine         | Used In                             |
| -------------- | ----------------------------------- |
| V8             | Chrome, Edge, Opera, Brave, Node.js |
| JavaScriptCore | Safari, Bun                         |
| SpiderMonkey   | Firefox                             |