title: play the youtube video which is inside iframe in custom button click
body: <p>I want to play the youtube which is in nested iframe in custom button click using jquery.</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>jQuery(document).ready(function($){
      $(".playButton").click(function(){
         $(".flex-active-slide .player")[0].src += "?autoplay=1";
        });
    });</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"&gt;&lt;/script&gt;
  &lt;div class="playButton"&gt;Play button&lt;/div&gt;
  
  &lt;iframe&gt;
      &lt;html&gt;
          &lt;body&gt;
            &lt;div class="embedVideo"&gt;
              &lt;div class="player"&gt;
             &lt;iframe src="//www.youtube.com/embed/sqpKq6k04vk?width%3D640%26amp%3Bheight%3D360%26amp%3Bautoplay%3D0%26amp%3Bvq%3Dlarge%26amp%3Brel%3D0%26amp%3Bcontrols%3D1%26amp%3Bautohide%3D2%26amp%3Bshowinfo%3D1%26amp%3Bmodestbranding%3D0%26amp%3Btheme%3Ddark%26amp%3Biv_load_policy%3D1%26amp%3Bwmode%3Dopaque"&gt;
                &lt;html&gt;
                   &lt;body&gt;
                      &lt;div id="player"&gt;
                        &lt;div class="html5-videoPlayer"&gt;
                          &lt;video &gt;&lt;/video&gt;
                        &lt;/div&gt;  
                      &lt;/div&gt;  
                   &lt;/body&gt;
                &lt;/html&gt;
              &lt;/iframe&gt;
              &lt;/div&gt;  
             &lt;/div&gt;
          &lt;/body&gt;
      &lt;/html&gt;
  &lt;/iframe&gt;</code></pre>
  </div>
  </div>
  </p>