title: Javascript Trigger onChange without performing mouse or keyboard
body: <p>Some function get call when i change item is "Select" tag.<br>
  I want to trigger onchange event using javascript code just like somebtn.click() can trigger click event.</p>
  
  <pre><code>&lt;select id="abc"&gt;
  &lt;option selected&gt;item1&lt;/option&gt;
  &lt;option&gt;item2&lt;/option&gt;
  &lt;option&gt;item3&lt;/option&gt;
  &lt;/select&gt;
  </code></pre>
  
  <p>I want when page load or at any other event, item3 get selected automatically and onchange function automatically called as item3 is selected automatically.</p>