作者:看电影天堂4 | 来源:互联网 | 2023-08-10 06:09
123456789101112131415161718192021222324const puppeteer = require('puppeteer')void(async () => { con
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
| const puppeteer = require('puppeteer')
void(async () => {
const browser = await puppeteer.launch({
headless: false,
devtools: true
})
const page = await browser.newPage()
const UA = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3835.0 Safari/537.36"; // UserAgent ;
await Promise.all ( [
page.setUserAgent ( UA ) ,
page.setJavascriptEnabled ( true ) , // 允许执行js脚本
] ) ;
await page.goto( "http://www.gewara.com/" , { waitUntil : "networkidle0" , timeout : 3600000 } ) ;
await page
.mainFrame()
.addScriptTag({
url: 'https://code.jquery.com/jquery-3.4.1.min.js'
})
await page.waitFor(2000)
page.on( 'console' , msg => console.log( "var result = await page.evaluate( ( ) =>{ *** 函数内的 console.log:" , msg.text() ) ); |
const result = await page.evaluate(() => {
1 2 3
| const watchDog = ( window.$ !== undefined );
console.log( "window.$ !== undefined JQ:" + watchDog ) ; // 应该显示 true ;实际测试却显示 false ;但是,浏览器运行打开网页后,在控制面板测试,就显示为 true 了 ;
return |
})
console.log(result)
})()