Puppeteer--其它功能

const puppeteer = require(‘puppeteer‘);
const fs = require(‘fs‘);
 
puppeteer.launch().then(async browser => {
  const page = await browser.newPage();
  page.on(‘console‘, msg => console.log(msg.text));
  await page.exposeFunction(‘readfile‘, async filePath => {
    return new Promise((resolve, reject) => {
      fs.readFile(filePath, ‘utf8‘, (err, text) => {
        if (err)
          reject(err);
        else
          resolve(text);
      });
    });
  });
  await page.evaluate(async () => {
    // use window.readfile to read contents of a file
    const content = await window.readfile(‘/etc/hosts‘);
    console.log(content);
  });
  await browser.close();
});