How to use _resetDefaultBackgroundColor method in Puppeteer

Best JavaScript code snippet using puppeteer

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1const puppeteer = require('puppeteer');2(async () => {3 const browser = await puppeteer.launch();4 const page = await browser.newPage();5 await page.screenshot({path: 'example.png'});6 await browser.close();7})();8newPage()9close()10goto()11screenshot()12click()13type()14evaluate()

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1const puppeteer = require('puppeteer');2(async () => {3 const browser = await puppeteer.launch();4 const page = await browser.newPage();5 await page._client.send('Emulation.setDefaultBackgroundColorOverride', {6 color: { r: 0, g: 0, b: 0, a: 255 }7 });8 await page.screenshot({ path: 'example.png' });9 await browser.close();10})();11const puppeteer = require('puppeteer');12(async () => {13 const browser = await puppeteer.launch();14 const page = await browser.newPage();15 await page._client.send('Emulation.setDefaultBackgroundColorOverride', {16 color: { r: 0, g: 0, b: 0, a: 255 }17 });18 await page.screenshot({ path: 'example.png' });19 await browser.close();20})();21const puppeteer = require('puppeteer');22(async () => {23 const browser = await puppeteer.launch();24 const page = await browser.newPage();25 await page._client.send('Emulation.setDefaultBackgroundColorOverride', {26 color: { r: 0, g: 0, b: 0, a: 255 }27 });28 await page.screenshot({ path: 'example.png' });29 await browser.close();30})();31const puppeteer = require('puppeteer');32(async () => {33 const browser = await puppeteer.launch();34 const page = await browser.newPage();35 await page._client.send('Emulation.setDefaultBackgroundColorOverride', {36 color: { r: 0, g: 0, b: 0, a: 255 }37 });38 await page.screenshot({ path: 'example.png' });39 await browser.close();40})();41const puppeteer = require('puppeteer');42(async () => {

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1const puppeteer = require('puppeteer');2(async () => {3 const browser = await puppeteer.launch();4 const page = await browser.newPage();5 await page.screenshot({path: 'google.png'});6 await browser.close();7})();8 at CDPSession.send (/​home/​ashish/​Downloads/​node_modules/​puppeteer/​lib/​Connection.js:200:13)9 at ExecutionContext.evaluateHandle (/​home/​ashish/​Downloads/​node_modules/​puppeteer/​lib/​ExecutionContext.js:71:75)10 at ExecutionContext.evaluate (/​home/​ashish/​Downloads/​node_modules/​puppeteer/​lib/​ExecutionContext.js:46:31)11 at Page.evaluate (/​home/​ashish/​Downloads/​node_modules/​puppeteer/​lib/​Page.js:860:43)12 at Page.<anonymous> (/​home/​ashish/​Downloads/​node_modules/​puppeteer/​lib/​helper.js:111:23)13 at Page.exposeFunction (/​home/​ashish/​Downloads/​node_modules/​puppeteer/​lib/​Page.js:1254:15)14 at Page.<anonymous> (/​home/​ashish/​Downloads/​node_modules/​puppeteer/​lib/​helper.js:111:23)15 at Page._addConsoleMessageListener (/​home/​ashish/​Downloads/​node_modules/​puppeteer/​lib/​Page.js:1284:7)16 at Page._onTargetCrashed (/​home/​ashish/​Downloads/​node_modules/​puppeteer/​lib/​Page.js:1294:10)17 at CDPSession.Page.client.on.event (/​home/​ashish/​Downloads/​node_modules/​puppeteer/​lib/​Page.js:121:56)

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1const puppeteer = require('puppeteer');2(async () => {3 const browser = await puppeteer.launch({4 });5 const page = await browser.newPage();6 await page.waitForTimeout(2000);7 await page.evaluate(() => {8 document.body.style.backgroundColor = 'red';9 });10 await page.waitForTimeout(2000);11 await page.evaluate(() => {12 document.body.style.backgroundColor = 'blue';13 });14 await page.waitForTimeout(2000);15 await page.evaluate(() => {16 document.body.style.backgroundColor = 'green';17 });18 await page.waitForTimeout(2000);19 await page.evaluate(() => {20 document.body.style.backgroundColor = 'pink';21 });22 await page.waitForTimeout(2000);23 await page.evaluate(() => {24 document.body.style.backgroundColor = 'orange';25 });26 await page.waitForTimeout(2000);27 await page.evaluate(() => {28 document.body.style.backgroundColor = 'yellow';29 });30 await page.waitForTimeout(2000);31 await page.evaluate(() => {32 document.body.style.backgroundColor = 'purple';33 });34 await page.waitForTimeout(2000);35 await page.evaluate(() => {36 document.body.style.backgroundColor = 'black';37 });38 await page.waitForTimeout(2000);39 await page.evaluate(() => {40 document.body.style.backgroundColor = 'white';41 });42 await page.waitForTimeout(2000);43 await page.evaluate(() => {44 document.body.style.backgroundColor = 'grey';45 });46 await page.waitForTimeout(2000);47 await page.evaluate(() => {48 document.body.style.backgroundColor = 'brown';49 });50 await page.waitForTimeout(2000);51 await page.evaluate(() => {52 document.body.style.backgroundColor = 'teal';53 });54 await page.waitForTimeout(2000);55 await page.evaluate(() => {56 document.body.style.backgroundColor = 'maroon';57 });58 await page.waitForTimeout(2000);59 await page.evaluate(() => {60 document.body.style.backgroundColor = 'navy';61 });62 await page.waitForTimeout(2000);63 await page.evaluate(() => {64 document.body.style.backgroundColor = 'lime';65 });66 await page.waitForTimeout(2000);67 await page.evaluate(() => {

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1const puppeteer = require('puppeteer');2(async () => {3 const browser = await puppeteer.launch();4 const page = await browser.newPage();5 await page.screenshot({path: 'example.png'});6 await browser.close();7})();8You can also use the headless mode to run the browser in the background without opening the browser window. To do this, pass the {headless: true} parameter in the launch function as shown below:9const browser = await puppeteer.launch({headless: true});10You can also use the headless mode to run the browser in the background without opening the browser window. To do this, pass the {headless: true} parameter in the launch function as shown below:11const browser = await puppeteer.launch({headless: true});12You can also use the headless mode to run the browser in the background without opening the browser window. To do this, pass the {headless: true} parameter in the launch function as shown below:13const browser = await puppeteer.launch({headless: true});14You can also use the headless mode to run the browser in the background without opening the browser window. To do this, pass the {headless: true} parameter in the launch function as shown below:15const browser = await puppeteer.launch({headless: true});16You can also use the headless mode to run the browser in the background without opening the browser window. To do this, pass the {headless: true} parameter in the launch function as shown below:17const browser = await puppeteer.launch({headless: true});

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1const puppeteer = require('puppeteer');2(async () => {3 const browser = await puppeteer.launch({4 });5 const page = await browser.newPage();6 await page.screenshot({ path: 'google.png' });7 await page._client.send('Emulation.setDefaultBackgroundColorOverride', { color: { r: 255, g: 0, b: 0, a: 255 } });8 await page.screenshot({ path: 'google-red.png' });9 await page._client.send('Emulation.setDefaultBackgroundColorOverride');10 await page.screenshot({ path: 'google-white.png' });11 await browser.close();12})();13const puppeteer = require('puppeteer');14(async () => {15 const browser = await puppeteer.launch({16 });17 const page = await browser.newPage();18 await page.screenshot({ path: 'google.png' });19 await page._client.send('Emulation.setDefaultBackgroundColorOverride', { color: { r: 255, g: 0, b: 0, a: 255 } });20 await page.screenshot({ path: 'google-red.png' });21 await page._client.send('Emulation.setDefaultBackgroundColorOverride');22 await page.screenshot({ path: 'google-white.png' });23 await browser.close();24})();25const puppeteer = require('puppeteer');26(async () => {27 const browser = await puppeteer.launch({28 });29 const page = await browser.newPage();30 await page.screenshot({ path: 'google.png' });31 await browser.close();32})();

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1const puppeteer = require('puppeteer');2(async () => {3 const browser = await puppeteer.launch({headless: false});4 const page = await browser.newPage();5 await page.setViewport({width: 1366, height: 768});6 await page._client.send('Emulation.setDefaultBackgroundColorOverride', {7 color: {r: 0, g: 0, b: 0, a: 0}8 });9 await page.screenshot({path: 'google.png', fullPage: true});10 await browser.close();11})();12const puppeteer = require('puppeteer');13(async () => {14 const browser = await puppeteer.launch({headless: false});15 const page = await browser.newPage();16 await page.setUserAgent('Mozilla/​5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/​604.1.38 (KHTML, like Gecko) Version/​11.0 Mobile/​15A372 Safari/​604.1');17 await page.screenshot({path: 'google.png', fullPage: true});18 await browser.close();19})();

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Using AI Code Generation

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1const puppeteer = require('puppeteer');2(async () => {3 const browser = await puppeteer.launch();4 const page = await browser.newPage();5 await page._client.send('Emulation.setDefaultBackgroundColorOverride', {6 color: { r: 0, g: 0, b: 0, a: 0 }7 });8 await page.screenshot({path: 'example.png'});9 await browser.close();10})();11const puppeteer = require('puppeteer');12(async () => {13 const browser = await puppeteer.launch();14 const page = await browser.newPage();15 await page._client.send('Emulation.setDefaultBackgroundColorOverride', {16 color: { r: 0, g: 0, b: 0, a: 0 }17 });18 await page.screenshot({path: 'example.png'});19 await browser.close();20})();21const puppeteer = require('puppeteer');22(async () => {23 const browser = await puppeteer.launch();24 const page = await browser.newPage();25 await page._client.send('Emulation.setDefaultBackgroundColorOverride', {26 color: { r: 0, g: 0, b: 0, a: 0 }27 });28 await page.screenshot({path: 'example.png'});29 await browser.close();30})();31const puppeteer = require('puppeteer');32(async () => {33 const browser = await puppeteer.launch();34 const page = await browser.newPage();35 await page._client.send('Emulation.setDefaultBackgroundColorOverride', {36 color: { r: 0, g: 0, b: 0, a: 0 }37 });38 await page.screenshot({path: 'example.png'});

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Something went wrong with your r symbol in innerText (i think it might be BOM)
Try it:

    const puppeteer = require('puppeteer');
    puppeteer.launch({ignoreHTTPSErrors: true, headless: false}).then(async browser => {
    const page = await browser.newPage();
    console.log(2);
    await page.setViewport({ width: 500, height: 400 });
    console.log(3)
    const res = await page.goto('https://apps.realmail.dk/scratchcards/eovendo/gui/index.php?UserId=60sEBfXq6wNExN4%2bn9YSBw%3d%3d&ServiceId=f147263e75262ecc82d695e795a32f4d');
    console.log(4)
    await page.waitForFunction('document.querySelector(".eo-validation-code").innerText.length == 32').catch(err => console.log(err)); 
https://stackoverflow.com/questions/51937939/puppeteer-evaluation-failed-syntaxerror-invalid-or-unexpcted-token

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