Bootstrap Popover插件

<div class = "container" style = "padding: 100px 50px 10px;" >
   <button type = "button" class = "btn btn-default" title = "Popover title"  
      data-container = "body" data-toggle = "popover" data-placement = "left" 
      data-content = "Some content in Popover on left">

      Popover on left
   </button>

   <button type = "button" class = "btn btn-primary" title = "Popover title"  
      data-container = "body" data-toggle = "popover" data-placement = "top" 
      data-content = "Some content in Popover on top">

      Popover on top
   </button>

   <button type = "button" class = "btn btn-success" title = "Popover title"  
      data-container = "body" data-toggle = "popover" data-placement = "bottom" 
      data-content = "Some content in Popover on bottom">

      Popover on bottom
   </button>

   <button type = "button" class = "btn btn-warning" title = "Popover title"  
      data-container = "body" data-toggle = "popover" data-placement = "right" 
      data-content = "Some content in Popover on right">

      Popover on right
   </button>

</div>

<script>
   $(function (){
      $("[data-toggle = 'popover']").popover();
   });
</script>