Trying to use the DOMParser with node js
A lot of browser functionalities, like DOM manipulations or XHR, are not available natively NodeJS because that is not a typical server task to access the DOM - you'll have to use an external library to do that.
DOM capacities depends a lot on the library, here's a quick comparisons of the main tools you can use:
jsdom: implements DOM level 4 which is the latest DOM standard, so everything that you can do on a modern browser, you can do it injsdom. It is the de-facto industry standard for doing browser stuff on Node, used by Mocha, Vue Test Utils, Webpack Prerender SPA Plugin, and many other:const jsdom = require("jsdom");const dom = new jsdom.JSDOM(`<!DOCTYPE html><p>Hello world</p>`);dom.window.document.querySelector("p").textContent; // 'Hello world'htmlparser2: same, but with enhanced performances and flexibility at the price of a more complex API:const htmlparser = require("htmlparser2");const parser = new htmlparser.Parser({ onopentag: (name, attrib) => { if (name=='p') console.log('a paragraph element is opening'); }}, {decodeEntities: true});parser.write(`<!DOCTYPE html><p>Hello world</p>`);parser.end();// console output: 'a paragraph element is opening'cheerio: implementation of jQuery based on HTML DOM parsing byhtmlparser2:const cheerio = require('cheerio');const $ = cheerio.load(`<!DOCTYPE html><p>Hello world</p>`);$('p').text('Bye moon');$.html(); // '<!DOCTYPE html><p>Bye moon</p>'xmldom: fully implements the DOM level 2 and partially implements the DOM level 3. Works with HTML, and with XML alsodom-parser: regex-based DOM parser that implements a few DOM methods likegetElementById. Since parsing HTML with regular expressions is a very bad idea I wouldn't recommend this one for production.
There is no DOMParser in node.js, that's a browser thing. You can try any of these modules though:
https://github.com/joyent/node/wiki/modules#wiki-parsers-xml
You can use a Node implementation of DOMParser, such as xmldom. This will allow you to access DOMParser outside of the browser. For example:
var DOMParser = require('xmldom').DOMParser;var parser = new DOMParser();var document = parser.parseFromString('Your XML String', 'text/xml');