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craw-spa.js
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craw-spa.js
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/**
* 在无头浏览器自动使用单页应用
*/
const puppeteer = require('puppeteer');
const devices = require('puppeteer/DeviceDescriptors');
const iPhone6 = devices['iPhone 6'];
const crawSpa = async url => {
console.log('启动浏览器');
const browser = await puppeteer.launch({
// 关闭无头模式,方便我们看到这个无头浏览器执行的过程
headless: false,
});
console.log('打开页面');
const page = await browser.newPage();
// 模拟 iPhone6
await page.emulate(iPhone6);
console.log('地址栏输入网页地址');
await page.goto(url);
console.log('等待页面准备好');
// 这里判断地比较粗暴
await page.waitForSelector('.foodentry');
await page.waitForSelector('.shoplist');
await page.waitForSelector('.search-wrapper .search');
console.log('点击搜索框');
await page.tap('.search-wrapper .search');
await page.waitForSelector('input[type="search"]');
// console.log('===为了看清楚,傲娇地等两秒===');
await page.waitFor(2000);
console.log('输入世界上最好吃的食物吧!');
await page.type('麦当劳', {
delay: 200, // 每个字母之间输入的间隔
});
console.log('回车开始搜索');
// await page.press('Enter');
await page.tap('button');
console.log('等待搜素结果渲染出来');
await page.waitForSelector('[class^="index-container"]');
// console.log('===为了看清楚,傲娇地等两秒===');
await page.waitFor(2000);
console.log('找到搜索到的第一家外卖店!');
await page.tap('[class^="index-container"]');
// console.log('===为了看清楚,傲娇地等两秒===');
await page.waitFor(2000);
console.log('等待菜单渲染出来');
await page.waitForSelector('[class^="fooddetails-food-panel"]');
// console.log('===为了看清楚,傲娇地等两秒===');
await page.waitFor(2000);
console.log('直接选一个菜品吧');
await page.tap('[class^="fooddetails-cart-button"]');
// console.log('===为了看清楚,傲娇地等两秒===');
await page.waitFor(2000);
console.log('等待加入购物车成功');
await page.waitForSelector('[class^="bottomNav-cartfooter"]');
// console.log('===为了看清楚,傲娇地等两秒===');
await page.waitFor(2000);
console.log('点到了,把按钮变红以表高兴!');
await page.evaluate(() => {
document.querySelector('[class^="submit-btn-submitbutton"]').style.backgroundColor = 'red';
return true;
});
// console.log('===为了看清楚,傲娇地等两秒===');
await page.waitFor(2000);
console.log('检查购物车!');
await page.tap('[class^="bottomNav-carticon"]');
// console.log('===为了看清楚,傲娇地等两秒===');
await page.waitFor(2000);
await page.tap('[class^="submit-btn-submitbutton"]');
console.log('好了,到这里需要登录才能继续下单,演示到此结束啦!');
console.log('5秒后关闭浏览器');
await page.waitFor(5000);
await browser.close();
};
module.exports = crawSpa;
if (require.main === module) {
// for test
crawSpa('https://h5.ele.me/msite/');
}