1、安装node环境

2、安装插件：npm install puppeteer 安装插件

3、创建抓取文件，如：index.js, 代码如下

const puppeteer = require('puppeteer');

async function test(url) {

  const browser = await puppeteer.launch();

  const page = await browser.newPage();

  await page.goto(url, { waitUntil: 'networkidle2' });

  const content = await page.content(); 

  await browser.close();

  return content;

}

test('https://baidu.com').then(content => {

  console.log(content); 

});