title: How does Bootstrap know if an element has popover?
body: <p>I understand when we add popover on an element in html but when we use javascript:  </p>
  
  <pre><code> $("#element").popover({ // popover details }); 
  </code></pre>
  
  <p>there is no change on <code>#element</code> in html code. How can I refer to all elements with popover when there is no sign of it in html code?</p>