I'm using puppeteer and I have a little problem that once in a while new tab with ad appears, and stops the whole script. I'm looking for a way to basically detect when 3rd tab in browser window is open and close this 3rd tab (It is always the 3rd - first is blank, second is my page that i need and third is this ad).
Try something like this:
import puppeteer from 'puppeteer';
const browser = await puppeteer.launch({ headless: false });
try {
browser.addListener('targetcreated', async (target) => {
if (target.type() !== 'page') return;
const properOrigin = 'https://example.org';
const pageUrl = target.url();
if (new URL(pageUrl).origin === properOrigin) return;
console.log(`Closing page ${pageUrl}...`);
const newPage = await target.page();
await newPage.waitForTimeout(3000);
await newPage.close();
console.log(`Page ${pageUrl} closed.`);
});
const [mainPage] = await browser.pages();
await mainPage.goto('https://example.org/');
await mainPage.evaluate(() => {
window.open('https://google.com');
});
} catch (err) { console.error(err); }
Related
How to press control + P on a web page that is automated by puppeteer?
This code loads the web page. But using await page.keyboard.down('Control') to press the Control key has no effect.
(async () =>
{
const browser = await puppeteer.launch({ headless: false });
const page = await browser.newPage();
await page.goto(`https://google.com`);
await page.waitForSelector('input');
await page.focus("input");
// this works
await page.keyboard.down('Shift');
await page.keyboard.press('KeyP');
await page.keyboard.up('Shift');
// this has no effect.
await page.keyboard.down('Control');
await page.keyboard.press('KeyP');
await page.keyboard.up('Control');
})();
What I would like to do is navigate to a PDF file. Have the browser open the PDF. Then press Control P and automate the print dialog to the extent that the code selects the printer to print to and presses the Enter key.
running puppeteer in kiosk mode enables the window.print( ) dialog to be automatically responded to.
const puppeteer = require('puppeteer');
(async () =>
{
const browser = await puppeteer.launch(
{
headless: false,
"args": [ "--kiosk-printing" ]
});
const page = await browser.newPage();
await page.goto(`file:///C:/Users/srich/Downloads/packing-list.pdf`);
await page.evaluate(() => { window.print(); });
await page.waitForTimeout(2000) ;
await browser.close( ) ;
})();
So, I have a front end in React.js or Ember.js - not sure. I'm just trying to automate some testing for it. When looking at the HTML in the Chrome Dev Tools, I see
<label class="MuiFormLabel-root-16 MuiInputLabel-root-5 MuiInputLabel-formControl-10 MuiInputLabel-animated-13 MuiInputLabel-outlined-15" data-shrink="false">Username</label>
This is set in an iframe (which isn't too important for this issue). I'm trying to get the ElementHandler using the puppeteer function
frame.$(selector)
How do I get the selector given
Username
I've tried a few things, but with little success.
If I understand correctly, you need to find an element by its text content. If so, these are at least two ways:
const puppeteer = require('puppeteer');
(async function main() {
try {
const browser = await puppeteer.launch(); // { headless: false, defaultViewport: null, args: ['--lang=en'] }
const [page] = await browser.pages();
await page.goto('https://example.org/');
const element1 = await page.evaluateHandle(() => {
return [...document.querySelectorAll('h1')].find(h1 => h1.innerText === 'Example Domain');
});
console.log(await (await element1.getProperty('outerHTML')).jsonValue());
const [element2] = await page.$x('//h1[text()="Example Domain"]');
console.log(await (await element2.getProperty('outerHTML')).jsonValue());
await browser.close();
} catch (err) {
console.error(err);
}
})();
My solution was to place HTML data attributes in the front end code so that I can easily select them.
I am currently doing a project that needs to scrape a data from the search result in carousell.ph
I basically made a sample HTML and replicate the output HTML of carousell, so far the javascript work except when I tried to migrate it using puppeteer it always gives me an error.
The task is basically get all the product list from the search url "https://www.carousell.ph/search/iphone"
Here's the code I made.
const puppeteer = require('puppeteer');
(async () => {
const browser = await puppeteer.launch()
const page = await browser.newPage()
let url = 'https://www.carousell.ph/search/iphone';
await page.goto(url, {waitUntil: 'load', timeout: 10000});
await page.setViewport({ width: 2195, height: 1093 });
await page.screenshot({ fullPage: true, path: 'carousell.png' });
document.querySelectorAll('main').forEach(main => {
main.querySelectorAll('a').forEach(product => {
const product_details = product.querySelectorAll('p');
const productName = product.textContent;
const productHref = product.getAttribute('href');
console.log(product_details[0].textContent + " - "+ product_details[1].textContent);
});
});
await browser.close()
})()
As #hardkoded stated, document is not something that is out of the box in puppeteer, it's dogma in the browser, but not in Node.js. You also do not need to for each in Node.js. The Map Technique outlined in this video is very helpful and quick. I'd make sure also to keep await on your loop or map technique, because the function is asynchronous so you want to make sure the promise comes back resolved.
Map technique
An extremely fast way to get many elements into an array from a page is to use a function like below. So instead of getting an array of the elements and then looping them for their properties. You can create a function like this below using $$eval and map. The result is a formatted JSON array that takes all the looping out of the equation.
const links = await first_state_list.$$eval("li.stateList__item", links =>
links.map(ele2 => ({
State_nme: ele2.querySelector("a").innerText.trim(), //GET INNER TEXT
State_url: ele2.querySelector("a").getAttribute("href") //get the HREF
}))
);
Already made it work.
const puppeteer = require('puppeteer');
async function timeout(ms) {
return new Promise(resolve => setTimeout(resolve, ms));
}
(async () => {
const browser = await puppeteer.launch()
const page = await browser.newPage();
let searchItem = 'k20&20pro';
let carousellURL = 'https://www.carousell.ph/search/' + searchItem;
await page.goto(carousellURL, {waitUntil: 'load', timeout: 100000});
//await page.goto(carousellURL, {waitUntil: 'networkidle0'});
await page.setViewport({
width: 2195,
height: 1093
});
await page.evaluate(() => {
window.scrollBy(0, window.innerHeight);
})
await timeout(15000);
await page.screenshot({
fullPage: true,
path: 'carousell.png'
});
var data = await page.evaluate(() =>
Array.from(
document.querySelectorAll('main div a:nth-child(2)')).map(products => products.href
)
)
var i;
for (i = 0; i < data.length; i++) {
console.log(data[i]);
// comment this section but this will open the page to get product details.
//await page.goto(data[1], {"waitUntil" : "networkidle0"});
// inner product page details
// this will get the title
// document.querySelectorAll('h1')[0].innerText;
// this will get the amount
// document.querySelectorAll('h2')[0].innerText;
// this will get the description
// document.querySelectorAll('section div div:nth-child(4) p')[0].innerText;
// this will get sellers name
// document.querySelectorAll('div div:nth-child(2) a p')[0].innerText;
let ss_filename = 'carousellph_'+searchItem+'_'+i+'.png';
console.log(ss_filename);
console.log("\r\n");
//await page.screenshot({ fullPage: false, path: ss_filename });
}
await browser.close()
})()
I am using puppeteer to go to URL:https://www.booking.com/hotel/us/l-39-horizon-resort-amp-spa.en-gb.html
The following text in the hotel description sometimes shows up and sometimes not
Hotel Chain: The Leading Hotels of the World
Does anyone knows why this happens?
const puppeteer = require('puppeteer');
let bookingUrl = 'https://www.booking.com/hotel/us/l-39-horizon-resort-amp-spa.en-gb.html';
(async () => {
const browser = await puppeteer.launch({ headless: false ,slowMo: 250});
const page = await browser.newPage();
await page.goto(bookingUrl, { waitUntil : 'networkidle2' });
await delay(4000);
});
Have you tried waiting for it?
const selector = '#hotel_main_content > div.hp_hotel_description_hightlights_wrapper > div.hotel_description_wrapper_exp.hp-description > div.hp_desc_main_content > p.summary.hotel_meta_style';
await page.waitFor(selector, { visible:true });
A consideration about my code: I copied the elector with the Chrome devtools but it could change with time, make a try and if it works, refine it.
I want to close pages when puppeteer faces on any error , sometimes page the page that i try to load crashes and it doesnt call .close();
(async () => {
const page = await browser.newPage();
await page.setViewport({width: resWidth, height: resHeight});
await page.goto(d["entities"]["urls"][0]["expanded_url"], {timeout :90000});
await page.screenshot({path: './resimdata/'+d['id']+'.png' ,fullPage: true});
await page.close();
})();
There is an issue/PR on puppeteer repo regarding this which will be helpful in similar situation.
Related Issue link: https://github.com/GoogleChrome/puppeteer/issues/952
Meanwhile, you can try this little hack, if the PR is there on version 0.12+, we don't have to worry about the following code.
(async() => {
const browser = await puppeteer.launch({headless: false});
const page = await browser.newPage();
function handleClose(msg){
console.log(msg);
page.close();
browser.close();
process.exit(1);
}
process.on("uncaughtException", () => {
handleClose(`I crashed`);
});
process.on("unhandledRejection", () => {
handleClose(`I was rejected`);
});
await page.goto("chrome://crash");
})();
Which will output something like the following,
▶ node app/app.js
I was rejected