How to use waitForSelectorInPage method in Puppeteer

Best JavaScript code snippet using puppeteer

DOMWorld.js

Source:DOMWorld.js

...390    }391    /**392     * @internal393     */394    async waitForSelectorInPage(queryOne, selector, options, binding) {395        const { visible: waitForVisible = false, hidden: waitForHidden = false, timeout = this._timeoutSettings.timeout(), } = options;396        const polling = waitForVisible || waitForHidden ? 'raf' : 'mutation';397        const title = `selector \`${selector}\`${waitForHidden ? ' to be hidden' : ''}`;398        async function predicate(selector, waitForVisible, waitForHidden) {399            const node = predicateQueryHandler400                ? (await predicateQueryHandler(document, selector))401                : document.querySelector(selector);402            return checkWaitForOptions(node, waitForVisible, waitForHidden);403        }404        const waitTaskOptions = {405            domWorld: this,406            predicateBody: helper.makePredicateString(predicate, queryOne),407            title,408            polling,...

QueryHandler.js

Source:QueryHandler.js

...24                return elementHandle;25            await jsHandle.dispose();26            return null;27        };28        internalHandler.waitFor = (domWorld, selector, options) => domWorld.waitForSelectorInPage(handler.queryOne, selector, options);29    }30    if (handler.queryAll) {31        internalHandler.queryAll = async (element, selector) => {32            const jsHandle = await element.evaluateHandle(handler.queryAll, selector);33            const properties = await jsHandle.getProperties();34            await jsHandle.dispose();35            const result = [];36            for (const property of properties.values()) {37                const elementHandle = property.asElement();38                if (elementHandle)39                    result.push(elementHandle);40            }41            return result;42        };...

AriaQueryHandler.js

Source:AriaQueryHandler.js

...55            const element = await queryOne(document, selector);56            return element;57        },58    };59    return domWorld.waitForSelectorInPage((_, selector) => globalThis.ariaQuerySelector(selector), selector, options, binding);60};61const queryAll = async (element, selector) => {62    const exeCtx = element.executionContext();63    const { name, role } = parseAriaSelector(selector);64    const res = await queryAXTree(exeCtx._client, element, name, role);65    return Promise.all(res.map((axNode) => exeCtx._adoptBackendNodeId(axNode.backendDOMNodeId)));66};67const queryAllArray = async (element, selector) => {68    const elementHandles = await queryAll(element, selector);69    const exeCtx = element.executionContext();70    const jsHandle = exeCtx.evaluateHandle((...elements) => elements, ...elementHandles);71    return jsHandle;72};73/**...

Using AI Code Generation

1const puppeteer = require('puppeteer');2const { waitForSelectorInPage } = require('./waitForSelectorInPage');3(async () => {4  const browser = await puppeteer.launch({ headless: false });5  const page = await browser.newPage();6  await page.type('input[name="q"]', 'puppeteer');7  await page.click('input[name="btnK"]');8  await waitForSelectorInPage(page, 'h3.LC20lb');9  await page.screenshot({ path: 'example.png' });10  await browser.close();11})();12const puppeteer = require('puppeteer');13async function waitForSelectorInPage(page, selector, options = {}) {14  const { timeout = 30 * 1000 } = options;15  let lastError;16  const startTime = Date.now();17  while (Date.now() - startTime < timeout) {18    try {19      await page.waitForSelector(selector, options);20      return;21    } catch (err) {22      lastError = err;23    }24  }25  throw lastError;26}27module.exports = { waitForSelectorInPage };28const puppeteer = require('puppeteer');29const { waitForSelectorInPage } = require('./waitForSelectorInPage');30(async () => {31  const browser = await puppeteer.launch({ headless: false });32  const page = await browser.newPage();33  await page.type('input[name="q"]', 'puppeteer');34  await page.click('input[name="btnK"]');35  await waitForSelectorInPage(page, 'h3.LC20lb');36  await page.screenshot({ path: 'example.png' });37  await browser.close();38})();39const puppeteer = require('puppeteer');40async function waitForSelectorInPage(page, selector, options = {}) {41  const { timeout = 30 * 1000 } = options;42  let lastError;43  const startTime = Date.now();44  while (Date.now() - startTime < timeout) {45    try {46      await page.waitForSelector(selector, options);

Using AI Code Generation

1const puppeteer = require('puppeteer');2const expect = require('chai').expect;3const { waitForSelectorInPage } = require('./waitForSelectorInPage');4(async () => {5  const browser = await puppeteer.launch({headless: false});6  const page = await browser.newPage();7  await waitForSelectorInPage(page, 'input[name="q"]');8  await page.type('input[name="q"]', 'Puppeteer');9  await page.keyboard.press('Enter');10  await waitForSelectorInPage(page, '#search');11  const results = await page.$$('#search .g');12  expect(results.length).to.be.above(0);13  await browser.close();14})();

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.