title: how to fire event on canvas element
body: <p>i would like to fire click or keypress event on  element.</p>
  
  <pre><code>&lt;div class="wrapper"&gt;
  &lt;canvas class="box-shadow" id="canvas" width="640" height="640"&gt;&lt;/canvas&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>i have done like this:  </p>
  
  <pre><code>$(".wrapper").click();  
  </code></pre>
  
  <p>this is not working.</p>
  
  <p>How to fire event from jquery/javascript. (i can't change this html file.) </p>