puppeteer入门

npm i puppeteer

const puppeteer = require(‘puppeteer‘);

(async () => {
    const browser = await puppeteer.launch({
        headless: true
    })

    const page = await browser.newPage()

    await page.goto(‘http://www.baidu.com‘)
    await page.screenshot({
        path: ‘d:/temp/baidu.png‘
    })
    await browser.close(); // 关闭浏览器
})()

const devices = require(‘puppeteer/DeviceDescriptors‘)
const puppeteer = require(‘puppeteer‘);

(async () => {
    const browser = await puppeteer.launch({
        headless: true
    })

    const page = await browser.newPage()
    await page.emulate(devices[‘iPhone X‘])

    await page.goto(‘http://www.baidu.com‘)
    await page.screenshot({
        path: ‘d:/temp/baidu_iphone_X.png‘
    })
    await browser.close(); // 关闭浏览器
})()

// const devices = require(‘puppeteer/DeviceDescriptors‘)
const puppeteer = require(‘puppeteer‘);

(async () => {
    const browser = await puppeteer.launch({
        headless: false
    })

    const page = await browser.newPage()
    page.setViewport({
        width: 1920,
        height: 969,
    });
    // await page.emulate(devices[‘iPhone X‘])

    await page.goto(‘http://www.baidu.com‘)
    await page.type(‘#kw‘, ‘puppeteer‘)
    await page.click(‘#su‘)
    // await page.waitForNavigation({ timeout: 5000 })

    await page.waitFor(3000)
    await page.screenshot({
        path: ‘d:/temp/baidu_search_puppeteer.png‘
    })

    // page.waitForSelector(‘.nums_text‘)
    //     .then(() => {
    //         page.screenshot({
    //             path: ‘d:/temp/baidu_search_puppeteer.png‘
    //         })
    //     })

    await browser.close(); // 关闭浏览器
})()

PS D:\demo\puppeteer_01> node .\src\demo1.js

PS D:\demo\puppeteer_01> node .\src\demo2.js

PS D:\demo\puppeteer_01> node .\src\demo3.js