title: Injecting JavaScript onclick() event inside WebView
body: <p>I have an Android app, running a WebView that loads a certain page, and also part of the app</p>
  
  <ol>
  <li>I want to generate one of button onclick() event inside the WebView page</li>
  <li>How to load JavaScript file to WebView page which is inside the Android assets?</li>
  </ol>
  
  <p>Thanks. </p>