I want to open the website via this code and it doesn't work. What's the problem? No errors are shown.
const Nightmare = require('nightmare');
var d = Nightmare({show:true});
d.goto('https://duckduckgo.com').wait(3000).end().then(result => {});
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I am trying to upload the excel from UI (angular8 and node 14) and try to process it, but while retrieving data from excel for bulk data(1800 rows almost 12mb file ) it shows a Page Unresponsive pop-up many times and I can understand, chrome browser trying to use a lot of memory and result is Page Unresponsive pop-up. is there any way to disable or not show this pop-up or any solution for this issue?
Thanks in advance.
I am attaching below working Ts file code.
code:
onFileChange(evt: any) {
const target: DataTransfer = (evt.target) as DataTransfer;
const selectedFile = evt.target.files[0];
const reader: FileReader = new FileReader();
reader.readAsBinaryString(selectedFile);
reader.onload = (e: any) => {
const bstr: string = e.target.result;
const wbk: XLSX.WorkBook = XLSX.read(bstr, {type: 'binary'});
wbk.SheetNames.forEach(sheet =>{
setTimeout(()=>{}, 250); //I am trying to use timeout to refresh the flow but not working
const data1 = XLSX.utils.sheet_to_json(wbk.Sheets[sheet]);
console.log(data1);
})
}
};
I have the following NodeJS code to open Chromium in headless mode and record a web page to a video :
const { launch, getStream } = require("puppeteer-stream");
const fs = require("fs");
const { exec } = require("child_process");
async function test() {
const browser = await launch({headless: true});
const page = await browser.newPage();
await page.goto("https://www.someurl.com");
const stream = await getStream(page, { audio: true, video: true});
// record the web page to mp4 video
const ffmpeg = exec('ffmpeg -y -i - output.mp4');
stream.pipe(ffmpeg.stdin);
setTimeout(async () => {
await stream.destroy();
stream.on("end", () => {});
}, 1000 * 60);
}
The following code works properly but doesn't open chromium in headless mode. No matter what I do, the browser is still opened and visible when browsing the page. No error is thrown.
Does anyone know why it's not opened in headless mode please ?
Thanks
It says in the documentation for puppeteer-stream:
Notice: This will only work in headful mode
This is due to a limitation of Chromium where the Tab Capture API for the extension doesn't work in headless mode. (There are a couple bug reports about this, but I can't find the links at the moment.)
I had the same issue that headless doesn't work with some Websites and Elements (showing blank page content, not finding an element etc.).
But there is another method to "simulate" the headless mode by minimizing and moving the window to a location that can not be seen by the user.
This doesn't hide the chrome task from the taskbar, but the Chrome tab itself will still be hidden for the User.
Just use the following arguments:
var chromeOptions = new ChromeOptions();
chromeOptions.AddArguments(new List<string>() { "--window-size=1,1", "window-position=-2000,0" }); // This hides the chrome window
var chromeDriverService = ChromeDriverService.CreateDefaultService();
chromeDriverService.HideCommandPromptWindow = true; // This is to hid the console.
ChromeDriver driver = new ChromeDriver(chromeDriverService, chromeOptions);
driver.Navigate().GoToUrl("https://google.com");
in short the important part:
chromeOptions.AddArguments(new List<string>() { "--window-size=1,1", "window-position=-2000,0" });
chromeDriverService.HideCommandPromptWindow = true;
//driver.Manage().Window.Minimize(); //use this if the code above does not work
I have been trying to access a url with a CSV file to download it in a specific directory, using the Selenium Webdriver for Firefox(geckodriver), in a NodeJS enviroment on Linux-Mint.
This is my code:
const {Builder} = require('selenium-webdriver');
const firefox = require('selenium-webdriver/firefox');
const path = require('path');
const options = new firefox.Options();
options.setPreference('browser.download.dir', path.resolve(__dirname));
options.setPreference('browser.download.folderList', 2);
options.setPreference('browser.helperApps.neverAsk.saveToDisk', 'application/x-csv');
function example(){
let driver = new Builder().forBrowser('firefox').setFirefoxOptions(options).build();
driver.get('http://insight.dev.schoolwires.com/HelpAssets/C2Assets/C2Files/C2ImportCalEventSample.csv');
}
example();
As you can see, I am correctly setting the browser option to browser.helperApps.neverAsk.saveToDisk, so as to be able to bypass the dialog. However, I am still getting the dialog no matter what I do. I haven't tried this code on Windows, but for my purposes it needs to work on Linux.
Am I missing something? Some preference that needs to be added or changed? Or does this not work on my current enviroment?
Thank you in advance for any help provided.
If you are just downloading a file from link why do you need selenium?
A much simple approach will be just to get the file by http and save to file.
const http = require('http');
const fs = require('fs');
const file = fs.createWriteStream("C2ImportCalEventSample.csv");
const request = http.get("http://insight.dev.schoolwires.com/HelpAssets/C2Assets/C2Files/C2ImportCalEventSample.csv", function(response) {
response.pipe(file);
});
If you have to use selenium let me know in the comments and i will try to find a solution for your problem using selenium.
I'm currently running Node.js by Browserify for my website.
It reads the JSON file and I get the message through MQTT.
But the problem is that it seems like writefile does not work.
(Running this as node test.js in the terminal works by the way).
What is wrong with my code?
Moreover, Is this the best way to store any user data?
Thank you so much in advance.
Here's some part of my code
var fs = require("fs");
var path = require("path");
let newFile = fs.readFileSync('/home/capstone/www/html/javascript/test.json');
function testT() { //THIS WORKS FINE
let student0 = JSON.parse(newFile);
var myJSON = JSON.stringify(student0);
client.publish("send2IR", myJSON);
response.end();
};
function write2JSON() { //PROBLEM OF THIS CODE
const content = 'Some content!'
fs.writeFileSync('/home/capstone/www/html/javascript/test.json', content)
};
document.getElementById("blink").addEventListener("click", publish);
document.getElementById("write").addEventListener("click", write2JSON);
You cann't write directly for security reasons. For other hand you can use a server as API to do the filye system tasks and in the client only trigger the events.
This post is very related with your problem:
Is it possible to write data to file using only JavaScript?
I am trying to log into a website as an admin and then navigate to another page (a portal) which requires this admin login beforehand to display data. I don't think I can access the cookies because of an issue accessing https cookies issue I read up on earlier (correct me if I'm wrong).
So my current solution is to enter the url as soon as the login process is complete and then continue with other tasks. Could you please advise on the methods/functions I can use to do this? If there are better ways to do this, I'd also be happy to hear about those!
var webdriver = require("selenium-webdriver");
var By = require("selenium-webdriver").By;
var until = require("selenium-webdriver").until;
var assert = require("chai").assert;
var filename = "img";
var fs = require('fs');
var err = "error caught!";
var testName = "get_login_cookies";
var driver = new webdriver.Builder()
.forBrowser('chrome')
.build();
describe('email register', function () {
this.timeout(25000);
before(function(done) {
driver.navigate().to('https://www.perlego.com/#');
driver.manage().deleteAllCookies;
driver.manage().window().maximize()
.then(() => done())
});
it('logs in with admin user and gets cookies', (done) => {
driver.findElement(By.name('email')).sendKeys("user#example.com");
driver.findElement(By.css('#password')).sendKeys("examplePassword");
driver.findElement(By.css('.login-button')).click();
// some code here to navigate to other page via url
// runs remainder of tests
});
after(function(done) {
driver.quit()
.then(() => done())
});
});
So I found that it was as simple as running the driver.navigate() method where I wanted to go to a new page:
driver.navigate().to('https://www.somesite.com/#');
Because of the cookie settings on the site, I was unable to access them with the webdriver, so I had to enter the password each time.
I was tripped up by waiting for ajax calls on the page when trying to select elements, this method helped:
driver.manage().timeouts().implicitlyWait(3000);
Hope this helps someone out there!