title: set value input does not work (using javascript), has validation
body: <p>I'm trying to assign a value to an input on netflix login page, using javascript, the problem is that it does not take the value, since the input has validation by keypress.</p>
  
  <p>I'm using CefSharp (c#) to inject the code</p>
  
  <pre><code>browser.EvaluateScriptAsync("document.getElementById('id_userLoginId').focus();");
  browser.EvaluateScriptAsync("document.getElementById(\"id_userLoginId\").value = \"test@text\";");
  </code></pre>
  
  <p>the value is assigned, but when the focus is lost, it disappears</p>