How can Node.js (or any other engine) "run" (process, evaluate) HTML or SVG files with embedded JavaScript (that modifies the DOM) and output the resulting document?

CodePudding user response：

It can't. A JavaScript engine by itself has no notion of the HTML or SVG DOM. It would need additional libraries (see comments).

The alternative is to use a Browser to evaluate the file without rendering it ("headless" mode).