title: Call prompt inside a Selenium Test
body: <p>I want to ask for user input with <code>prompt</code> inside of a Selenium test.
  I tried the following:</p>
  
  <pre><code>driver.prompt("user input");
  </code></pre>
  
  <p>But I get the error <code>TypeError: prompt is not a function</code>. Is there any possibility to call <code>prompt()</code> inside a Selenium test?
  It seems to be possible in <a href="https://stackoverflow.com/q/8175328">python</a>.</p>