executing "commands" using selenium-webdriver in node javascript

Question

I'm interested in executing a number of the advanced "Commands" via the javascript API https://code.google.com/p/selenium/source/browse/javascript/webdriver/command.js

If I start with the base code:

var browser = new webdriver
        .Builder()
        .usingServer(server.address())
        .withCapabilities(webdriver.Capabilities.phantomjs())
        .build();

every form of "likely" syntax I've tried to execute has failed. for example:

// does not work
console.log(webdriver.Command('getWindowSize'))
// does not work
console.log(browser.Command('getWindowSize'))

Does anyone know how to execute "get window size", or "set window size" in selenium javascript webdriver?

Answer 1

You are probably looking for driver.executeScript.

Example:

var driver = new webdriver.Builder().
   withCapabilities(webdriver.Capabilities.chrome()).
   build();

driver.executeScript('return 2').then(function(return_value) {
    console.log('returned ', return_value)
});

This will log 2 to the console.

I also tested this with:

driver.get('http://underscorejs.org/');

driver.executeScript('return _').then(function(return_value) {
    console.log('returned ', return_value)
});

... which correctly lists all the methods defined on _, so it appears to work.

Answer 2

In my npm package there's a file node_modules/selenium-webdriver/test/execute_script_test.js with a great many examples using driver.executeScript (at the very end of the file they define execute as an alias for executeScript).

Answer 3

You need driver.executeScript(). You can either pass a function or a string.

const _scraper = () => {
  return document.title;
}

const getPageTitle = async (url) => {
  await driver.get(url);
  const pageTitle = await driver.executeScript(_scraper);
  console.log(pageTitle);
}

You can also pass argument to the function.

const _scraper1 = (arg) => {
  return document.getElementsByTagName(arg);
}

const getTagData = async (url) => {
  await driver.get(url);
  const metas = await driver.executeScript(_scraper, 'meta');
  console.log(metas);
}