Headless browser in Azure functions JavaScript?

Headless browser in Azure functions JavaScript?

By : user2172522
Date : October 23 2020, 08:10 PM
I wish did fix the issue. There are many restrictions on Azure App Service (includes WebApps, Function Apps), such as Win32k.sys (User32/GDI32) Restrictions. So some packages are not supported on Azure App Service, which like PhantomJS/puppteer be required to start a headless browser which needs GDI support to communicate with javascript/nodejs to get DOM node.
You can scrape a static web page or only HTML via Node http.ClientRequest or Request package in Function App. If to scrape a DOM node of a web page dynamically, the only way is using PhantomJS/puppteer on Azure VM, not Function Apps.
code :

Share : facebook icon twitter icon
headless browser or browser control with ajax/javascript/proxy and multithread support?

headless browser or browser control with ajax/javascript/proxy and multithread support?

By : Johannes Reiners
Date : March 29 2020, 07:55 AM
this will help So far the best solution I have found was using awesomium, it uses very little memory when used headless, allowing me to spawn lots of processes, compared to selenium and others solution and have a good support for AJAX, JavaScript, proxy, and more.
For the time being I will leave my own answer marked however if anyone posts a better option that meets my requirements I will change it.
Javascript loops, async functions and headless browser

Javascript loops, async functions and headless browser

By : user3650815
Date : March 29 2020, 07:55 AM
To fix this issue By playing with the new headless browser playwright from microsoft, I contsructed something that neither returns an error nore something else. , There are a few things you can improve in your code:
code :

  log('start playwright async');

  let maxRunners = 1;
  let running = 0;
  let list = [1,2,3,4,5,6,7,8,9,0,11,12,13,14,15];

  log('start job');
  const promises = [];
  while (list.length > 0) {

      if (running < maxRunners) {
          log('runner started');

          let entry = list[0];

          log('start browser loop');
          for (const browserType of ['chromium', 'firefox', 'webkit']) {
              log('fire async');
              promises.push((async () => {
                  log('loop next');
                  log('launch: ', browserType);
                  const browser = await playwright[browserType].launch({
                      headless: false
                  log(browserType, ' launched');
                  const context = await browser.newContext();
                  log('open new page');
                  const page = await context.newPage('http://whatsmyuseragent.org/');
                  log('page opened');
                  log('make screenshot');
                  await page.screenshot({path: `example-${browserType}.png`});
                  log('screenshot made');
                  log('close browser');
                  await browser.close();
                  log('browser closed');
                  log('loop succeed');

              log('end async');
          log('end loop');
      } else {
        await Promise.all(promises);

  await Promise.all(promises);
  log('job finished');
  log('end playwright script');

  function log(...msgs) {
      let date = new Date();
      let timeString = date.toISOString().substr(11, 8);
      //date.setSeconds(45); // specify value for SECONDS here
      //var timeString = date.toISOString().substr(11, 8);
      let msg = '';
      for (let i in msgs) {
          msg += msgs[i];

      console.log(timeString, ':', msg);
const promises = [];
log('fire async');
promises.push((async () => {
if (running < maxRunners) {
} else {
   await Promise.all(promises);
I need to run headless browser on ec2 using selenium python. I tried chrome headless but it didn't work

I need to run headless browser on ec2 using selenium python. I tried chrome headless but it didn't work

By : hubo
Date : March 29 2020, 07:55 AM
this one helps. Okie seems like they have a bug in installation of module
It will only work when you are running under a virtual environment and not when you are using direct system pip installation. The issue occurs because for direct install the drivers are download to /usr/local and it expects them to be available at the package location.
How to run Headless Chrome in Azure Cloud Service or Azure Functions?

How to run Headless Chrome in Azure Cloud Service or Azure Functions?

By : Babis Mylonas
Date : March 29 2020, 07:55 AM
it should still fix some issue I would recommend to use https://www.browserless.io/ so you don't have to run the chrome.exe in the app service.
Replace puppeteer.launch with puppeteer.connect
code :
const browser = await puppeteer.connect({
  browserWSEndpoint: 'wss://chrome.browserless.io/'
Headless browser image quality - Headless chrome, phantom js, slimmer js

Headless browser image quality - Headless chrome, phantom js, slimmer js

By : Khel Decherong
Date : September 20 2020, 06:00 PM
Any of those help You will get better results setting the deviceScaleFactor to 2 (a.k.a emulate retina):
code :
(async () => {
    const browser = await puppeteer.launch({ headless: false })
    const page = await browser.newPage();
    await page.setViewport({width: 800, height: 800, deviceScaleFactor: 2});
    await page.goto('https://en.wikipedia.org/wiki/Main_Page')

    await page.screenshot({ fullPage: true, path: 'test.png' })
Related Posts Related Posts :
  • jQuery target next of the same class in the whole DOM
  • encoding must be a valid encoding error in process encoding
  • How to do a date range to view data from selected date highcharts
  • How do I refactor this composed function with Ramda.js?
  • jQuery to serialize selected option's value, not label
  • Convert object to Chartis.js structure
  • Dynamic import with not bundled file
  • Click handler not firing for elements rendered in Ajax Callback - only in Safari
  • Math.max.apply gives an error CreateListFromArrayLike called on non-object
  • get the parent nodes to a given node in d3 dendogram
  • is-dropdown-submenu-parent makes links unclickable on Opera and Chrome
  • JS: Sum column values and updating result on change
  • Query against nested object keys
  • Fullcalendar getting its parent colspan
  • How to retrieve a dynamic number of elements by id
  • How to access redux variables and functions from deep components
  • Efficiently access Array.prorotype.filter single-item returns
  • PHP var into Javascript
  • How to parse json with javascript/jquery if content matches string
  • How can I make a pyramid based on alphabet?
  • Javascript sorting a csv rows and displaying in table
  • How to get specific data from json from api using ajax. The json looks strange to me
  • react js html5 video not working
  • Javascript Angular 4 Change ngClass from another Component
  • Hide multiple table columns with javascript
  • Convert datetime to ISO Format using moment js
  • Dynamically adjust canvas size depending on content
  • setTimeout function with document on click
  • Need advice on nested Promises.all
  • Google Captcha expiration time
  • Syntax of Javascript TAPE unit test
  • Parse php json to javascript
  • Write to Internet Explorer javascript console with vba in excel
  • 2 Forms with Jquery
  • Why the loop stops right in the middle?
  • filter system for restaurant booking
  • how to add active class in framework nav menu when (add/edit) pages are opened
  • Port a js map in dart
  • How to get value from select using javascript
  • Audio won't be muted with JavaScript - removing audio tags with mutationobserver needed
  • How to include an HTML/Javascript game into reactJS website
  • Convert Nodejs server into node module
  • Strage Vue behaviour. V-if does not watch properly
  • Is it possible to use map/filter/reduce inside a promise by returning the result with Promise.resolve?
  • Does EcmaScript have any rule where whitespace is important for the compiler during parsing
  • How is DOM and Virtual DOM represented in memory?
  • cannot display text onchange select option
  • My gulpfile can edit (change) and delete file, but dont copy new (add) files
  • How do I reset scroll position of paper-dialog-scrollable?
  • Loading unlooped gif-animation several times
  • Strange error from Google API: initializeAutocomplete is not a function
  • Array state variable is not being set during componentWillMount
  • Stop refresh on form submit when using javascript
  • Npm WARN deprecated babel-preset-es2015@6.24.1: Thanks for using Babel: we recommend using babel-preset-env now: please
  • Cant get wheel scroll delta on Firefox
  • Puppeteer with Prompt, ignoring rest of function
  • VueJS Form Input Binding
  • How To Extend mail.Chatter Widget in Javascript Odoo 10
  • How Chk two checkboxes at a time using jQuery
  • Broken "if" statement in JavaScript code…
  • shadow
    Privacy Policy - Terms - Contact Us © voile276.org