Описание тега external-js

"External JS" is a term used to describe external JavaScript files used within a project.

These files have the extension .js and contain solely JavaScript code that is to be called from HTML or other JavaScript programs.

In contrast, internal JS would include in-tag event-handlers for HTML and code that is written between <script> tags on a single page.

Important Links

Official JavaScript Specification: http://www.ecma-international.org/ecma-262/7.0/index.html

Official Document Object Model (DOM) Standard: https://www.w3.org/standards/techs/dom

Official HTML Standard: https://www.w3.org/standards/webdesign/htmlcss