I need to wait until the new page is loaded, which was opened in a new tab after clicking on the button. That is, I click on a button, a new page opens (which should load) and on it I click another button. I have some example code, but it doesn't work for some reason:
const page = await browser.newPage();
await page.goto('https://twitter.com/amazon/');
await page.click('.css-1dbjc4n:nth-child(1) > .css-1dbjc4n > .css-1dbjc4n > .css-901oao > .css-4rbku5',{waitUntil: ['load', 'domcontentloaded', 'networkidle0', 'networkidle2']});
const page2 = (await browser.pages())[2];
await page2.click('#nav-main > .nav-fill > #nav-xshop-container > #nav-xshop > .nav-a:nth-child(2)');
If I understand correctly, the problem is detecting when a new tab ("page") has opened and getting the new page object associated with the tab.
There are at least a couple techniques available. One method is promisifying the browser's "targetcreated"
event as described here :
const puppeteer = require("puppeteer");
(async () => {
const browser = await puppeteer.launch({headless: false});
const [page] = await browser.pages();
await page.goto("https://twitter.com/amazon");
const amzSel = `.css-1dbjc4n:nth-child(1) > .css-1dbjc4n >
.css-1dbjc4n > .css-901oao > .css-4rbku5`;
await page.waitForSelector(amzSel, {visible: true});
console.log((await browser.pages()).length); // => 1
// method 1
const newPagePromise = new Promise(resolve =>
browser.once("targetcreated", target => resolve(target.page()))
);
await page.click(amzSel);
const newPage = await newPagePromise;
// --------
console.log((await browser.pages()).length); // => 2
await newPage.waitForSelector("#nav-link-prime", {visible: true});
await newPage.click("#nav-link-prime");
const sel = "#prime-header-CTA-announce";
await newPage.waitForSelector(sel, {visible: true});
console.log(await newPage.$eval(sel, el => el.innerText.trim())); // => TRY PRIME
//await browser.close();
})();
Another approach is to use browser.waitForTarget
to check when the target's opener()
is the previous page target, as described here :
const puppeteer = require("puppeteer");
(async () => {
const browser = await puppeteer.launch({headless: false});
const [page] = await browser.pages();
await page.goto("https://twitter.com/amazon");
const amzSel = `.css-1dbjc4n:nth-child(1) > .css-1dbjc4n >
.css-1dbjc4n > .css-901oao > .css-4rbku5`;
await page.waitForSelector(amzSel, {visible: true});
console.log((await browser.pages()).length); // => 1
// method 2
const pageTarget = page.target();
await page.click(amzSel);
const newTarget = await browser.waitForTarget(target =>
target.opener() === pageTarget
);
const newPage = await newTarget.page();
// --------
console.log((await browser.pages()).length); // => 2
await newPage.waitForSelector("#nav-link-prime", {visible: true});
await newPage.click("#nav-link-prime");
const sel = "#prime-header-CTA-announce";
await newPage.waitForSelector(sel, {visible: true});
console.log(await newPage.$eval(sel, el => el.innerText.trim())); // => TRY PRIME
//await browser.close();
})();
As an aside, I'm not sure how important/significant this particular Twitter/Amazon example is, but #nav-xshop >.nav-a:nth-child(2)
doesn't seem like a reliable selector (it appears to have a race condition between "Best Sellers" and "Prime")--I'd use #nav-link-prime
since it's a direct id, if that's what you're looking for.
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