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Such proxy redirects requests from clients to different servers (globally or within a single local network). It can be used for load balancing in different Internet services, for testing web applications, for secured access to local network servers (all "non-client" traffic is ignored).
Scraping a large number of web pages using JavaScript typically involves the use of a headless browser or a scraping library. Puppeteer is a popular headless browser library for Node.js that allows you to automate browser actions, including web scraping.
Here's a basic example using Puppeteer:
Install Puppeteer:
npm install puppeteer
Create a JavaScript script for web scraping:
const puppeteer = require('puppeteer');
async function scrapeWebPages() {
const browser = await puppeteer.launch();
const page = await browser.newPage();
// Array of URLs to scrape
const urls = ['https://example.com/page1', 'https://example.com/page2', /* add more URLs */];
for (const url of urls) {
await page.goto(url, { waitUntil: 'domcontentloaded' });
// Perform scraping actions here
const title = await page.title();
console.log(`Title of ${url}: ${title}`);
// You can extract other information as needed
// Add a delay to avoid being blocked (customize the delay based on your needs)
await page.waitForTimeout(1000);
}
await browser.close();
}
scrapeWebPages();
Run the script:
node your-script.js
In this example:
urls
array contains the list of web pages to scrape. You can extend this array with the URLs you need.page.title()
.Keep in mind the following:
To close a Firefox pop-up window using Selenium Python, you can use the close() method. Here's an example:
from selenium import webdriver
# Open Firefox and navigate to a web page
driver = webdriver.Firefox()
driver.get('https://example.com')
# Click on a link or button that opens a pop-up window
driver.find_element_by_link_text('Open Popup').click()
# Switch to the pop-up window
driver.switch_to.window(driver.window_handles[-1])
# Close the pop-up window
driver.close()
# Switch back to the main window
driver.switch_to.window(driver.window_handles[0])
This code will open Firefox, navigate to a web page, click on a link or button that opens a pop-up window, switch to the pop-up window, and then close it. After closing the pop-up window, it switches back to the main window.
A proxy address, also known as a proxy URL or proxy server address, is the address used to connect to a proxy server. It typically consists of the following components:
Protocol: The protocol used to connect to the proxy server, such as HTTP, HTTPS, or SOCKS.
Username and password (optional): Authentication credentials for accessing the proxy server, if required.
Proxy server IP address or hostname: The IP address or hostname of the proxy server.
Port number: The port number on which the proxy server is listening for connections.
A proxy address might look like this:
http://:@:/
Here,
Open the "Browser Properties" in the control panel, in the "Connections" section of the opened window select "Network Settings". Remove the check mark from the "Use proxy" item, click "OK".
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