How to run a js file? [duplicate]

Question

I'm trying to get all links of the articles of one blog ( https://www.mrmoneymustache.com ) so I can compile them into a pdf, but i'm a complete noob in javascript. Somebody on reddit told me to use this code, which is supposed to do what I want :

const fs = require('fs');
const EventEmitter = require('events').EventEmitter;
const fetch = require('node-fetch');
const cheerio = require('cheerio');

const e = new EventEmitter();

e.on('fetchPage', link => {
  fetch(link).then(r => r.text()).then(cheerio.load).then($ => {
    const nextLink = $(".next_post a").attr('href');
    if (nextLink === undefined) return; // end on final page
    const postTitle = $(".headline").text();
    const postContent = $(".post_content").html();
    console.log(postTitle);
    fs.writeFileSync(postTitle + ".html", postContent);
    setTimeout(() => e.emit('fetchPage', nextLink), 5000);
  });
});

e.emit('fetchPage', 'https://whatever/post1');

But I dont really get how I am supposed to run this program.. Help please ?

Answer 1

Install Node.js, then run this command in a command shell:

node yourfile.js

Answer 2

You will have to install node and then node-fetch and cheerio using npmjs, the node package manager. Then, run with

node thenameoftheprogram.js

There are many scraping tools, however, that can be used online and where the learning curve is less steep. They could be maybe be a better match for your problem.