Selenium is a browser automation library. Most often used for testing web-applications, Selenium may be used for any task that requires automating interaction with the browser.
Install via npm with
npm install selenium-webdriver
Out of the box, Selenium includes everything you need to work with Firefox. You will need to download additional components to work with the other major browsers. The drivers for Chrome, IE, PhantomJS, and Opera are all standalone executables that should be placed on your PATH. The SafariDriver browser extension should be installed in your browser before using Selenium; we recommend disabling the extension when using the browser without Selenium or installing the extension in a profile only used for testing.
The sample below and others are included in the
example directory. You may
also find the tests for selenium-webdriver informative.
var webdriver = require('selenium-webdriver'), By = require('selenium-webdriver').By, until = require('selenium-webdriver').until; var driver = new webdriver.Builder() .forBrowser('firefox') .build(); driver.get('http://www.google.com/ncr'); driver.findElement(By.name('q')).sendKeys('webdriver'); driver.findElement(By.name('btnG')).click(); driver.wait(until.titleIs('webdriver - Google Search'), 1000); driver.quit();
Builder class is your one-stop shop for configuring new WebDriver
instances. Rather than clutter your code with branches for the various browsers,
the builder lets you set all options in one flow. When you call
Builder#build(), all options irrelevant to the selected browser are dropped:
var webdriver = require('selenium-webdriver'), chrome = require('selenium-webdriver/chrome'), firefox = require('selenium-webdriver/firefox'); var driver = new webdriver.Builder() .forBrowser('firefox') .setChromeOptions(/* ... */) .setFirefoxOptions(/* ... */) .build();
Why would you want to configure options irrelevant to the target browser? The
Builder's API defines your default configuration. You can change the target
browser at runtime through the
SELENIUM_BROWSER environment variable. For
example/google_search.js script is configured to run against
Firefox. You can run the example against other browsers just by changing the
# cd node_modules/selenium-webdriver node example/google_search SELENIUM_BROWSER=chrome node example/google_search SELENIUM_BROWSER=safari node example/google_search
The standalone Selenium Server acts as a proxy between your script and the browser-specific drivers. The server may be used when running locally, but it's not recommend as it introduces an extra hop for each request and will slow things down. The server is required, however, to use a browser on a remote host (most browser drivers, like the IEDriverServer, do not accept remote connections).
java -jar selenium-server-standalone-2.45.0.jar
You may configure your tests to run against a remote server through the Builder API:
var driver = new webdriver.Builder() .forBrowser('firefox') .usingServer('http://localhost:4444/wd/hub') .build();
Or change the Builder's configuration at runtime with the
SELENIUM_REMOTE_URL="http://localhost:4444/wd/hub" node script.js
You can experiment with these options using the
script provided with
API documentation is included in the
docs directory and is also available
online from the Selenium project. Addition resources include
Please report any issues using the Selenium issue tracker. When using the issue tracker
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