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Selenium is a powerful tool for automating web browsers, and it has various tools and bindings for different programming languages. If you are specifically interested in Selenium tools for JavaScript, you'll likely be working with the Selenium WebDriver bindings for JavaScript. Here are the key components and tools related to using Selenium with JavaScript
WebDriverJS (Selenium WebDriver for JavaScript)
WebDriverJS, also known as selenium-webdriver for JavaScript, is the official Selenium WebDriver binding for JavaScript. It allows you to write automated tests in JavaScript to control web browsers.
You can install WebDriverJS using npm:
npm install selenium-webdriver
Example code snippet using WebDriverJS
const { Builder, By, Key, until } = require('selenium-webdriver');
(async function example() {
let driver = await new Builder().forBrowser('chrome').build();
try {
await driver.get('https://www.example.com');
await driver.findElement(By.name('q')).sendKeys('webdriver', Key.RETURN);
await driver.wait(until.titleIs('webdriver - Google Search'), 1000);
} finally {
await driver.quit();
}
})();
Protractor
Protractor is an end-to-end testing framework specifically designed for Angular applications. It uses WebDriverJS internally and extends it to provide additional features for Angular applications.
Protractor can be installed using npm:
npm install -g protractor
Example Protractor configuration file:
exports.config = {
seleniumAddress: 'http://localhost:4444/wd/hub',
specs: ['example-spec.js']
};
WebdriverIO
WebdriverIO is another popular JavaScript framework for end-to-end testing. It is built on top of WebDriverJS and provides a simplified interface for interacting with browsers.
WebdriverIO can be installed using npm:
npm install webdriverio
Example WebdriverIO test script
const { remote } = require('webdriverio');
(async () => {
const browser = await remote({
capabilities: {
browserName: 'chrome'
}
});
await browser.url('https://www.example.com');
const title = await browser.getTitle();
console.log('Title:', title);
await browser.deleteSession();
})();
Nightwatch.js
Nightwatch.js is a testing framework built on top of WebDriverJS that simplifies the process of writing and executing end-to-end tests.
Nightwatch.js can be installed using npm:
npm install nightwatch
Example Nightwatch.js configuration file
module.exports = {
'Demo Test': function (browser) {
browser
.url('https://www.example.com')
.waitForElementVisible('body')
.assert.title('Example Domain')
.end();
}
};
A proxy in data centers is usually a separate server that processes incoming requests and then distributes them to the submitted addresses (or IP). Also through the proxy it is possible to allocate a specific user a separate IP address for connection (for example, if he needs a virtual server).
A proxy can be used for anonymous web surfing. After all, the connection is made through an intermediate server. And all the sites visited by the user will see the IP address of the proxy server, not the user himself. It can also be used to access resources that are only available to the citizens of a particular country.
Deactivating the proxy on android is a reverse process. To do this, you will need to go back to the previous settings in the browser, if that is where you set the installation parameters. In the item "Change proxy status", namely in the ProxyDroid app, set the "Off" position.
The first thing you need to do to use a proxy in your browser is to make the necessary settings. In Google Chrome browser, go to "Network" and then find and click on "Change proxy settings". In the "Internet properties" window that opens, go to "Connection" and click on the "Network settings" button at the bottom. When a new window opens, check the "Use proxy server for local connections" box and the "Do not use proxy server for local addresses" box. Enter the proxy port and IP address in the corresponding fields, close the window and click "OK".
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