const puppeteer = require('puppeteer');
puppeteer.launch().then(async browser => {
const page = await browser.newPage();
await page.setRequestInterception(true);
page.on('request', interceptedRequest => {
if (interceptedRequest.url().endsWith('.png') || interceptedRequest.url().endsWith('.jpg'))
interceptedRequest.abort();
else
interceptedRequest.continue();
});
await page.goto('https://example.com');
await browser.close();
});
同時執行
const [response] = await Promise.all([
page.waitForNavigation(), // The promise resolves after navigation has finished
page.click('a.my-link'), // Clicking the link will indirectly cause a navigation
]);
const firstRequest = await page.waitForRequest('http://example.com/resource');
const finalRequest = await page.waitForRequest(request => request.url() === 'http://example.com' && request.method() === 'GET');
return firstRequest.url();
const firstResponse = await page.waitForResponse('https://example.com/resource');
const finalResponse = await page.waitForResponse(response => response.url() === 'https://example.com' && response.status() === 200);
return finalResponse.ok();
const puppeteer = require('puppeteer');
puppeteer.launch().then(async browser => {
const page = await browser.newPage();
let currentURL;
//等待img tag出現
page
.waitForSelector('img')
.then(() => console.log('First URL with image: ' + currentURL));
//非同步 每次都會等待tag第一次出現
for (currentURL of ['https://example.com', 'https://google.com', 'https://bbc.com'])
await page.goto(currentURL);
await browser.close();
});
iThome鐵人賽
看影片追技術