i'm trying to get elements by id from an html file in a js file using nodejs. I'm getting the error 'document id not defined' because node doesn't provide a document object model by default.
So how can i use document.getElementById() in nodejs ?
Thank you !
If you want to parse files within the same server you should probably use some of this options, because nodejs it's just a JavaScript implementation, There is no window or document object, see this. But to answer exactly your question:
how can I use document.getElementById() in nodejs ?
You could do it using Puppeteer
Puppeteer is a Node library which provides a high-level API to control headless Chrome or Chromium over the DevTools Protocol. It can also be configured to use full (non-headless) Chrome or Chromium.
Here a basic example:
const puppeteer = require('puppeteer'); (async () => { const browser = await puppeteer.launch(); page = await browser.newPage(); await page.goto('http://example.com/some.html', {waitUntil: 'load'}); const newPage = await page.evaluate(() => { return document.getElementById("idexample").innerHTML; }); console.log(newPage) })(); 
from an html file, which means this is almost an XY problem and using document.getElementById() was already a wrong alley in the first place. On top of that, the question is a clear duplicate, and answered extensively.Use JSDOM npm package:
jsdom is a pure-JavaScript implementation of many web standards, notably the WHATWG DOM and HTML Standards, for use with Node.js. In general, the goal of the project is to emulate enough of a subset of a web browser to be useful for testing and scraping real-world web applications. https://github.com/jsdom/jsdom
documentin the first place. Are you asking how to parse an HTML file in node.js?