docs(javascript engine): add engine names explicitly (#36716)

* docs(javascript engine): add engine names explicitly

* Update files/en-us/glossary/engine/javascript/index.md

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

* Update javascript engine

* Update files/en-us/glossary/engine/javascript/index.md

* Update javascript engines

* Update files/en-us/glossary/engine/javascript/index.md

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Hamish Willee <[email protected]>
Co-authored-by: Joshua Chen <[email protected]>

Author: 4 people

files/en-us/glossary/engine/javascript/index.md

@@ -12,9 +12,16 @@ In a browser, the JavaScript engine operates together with the rendering engine
 
 Do not confuse JavaScript engines with {{glossary("engine/rendering", "rendering engines")}}, which are also crucial parts of browsers.
 
+Common JavaScript engines include:
+
+- [V8](https://v8.dev/)
+- [SpiderMonkey](https://spidermonkey.dev/)
+- [JavaScriptCore](https://developer.apple.com/documentation/javascriptcore)
+
 ## See also
 
 - [JavaScript engine](https://en.wikipedia.org/wiki/JavaScript_engine) on Wikipedia
+- [JavaScript implementations](/en-US/docs/Web/JavaScript/JavaScript_technologies_overview#javascript_implementations)
 - Related glossary terms:
   - {{glossary("Engine")}}
   - {{glossary("JavaScript")}}