Bootstrap Popover not working : For bootstrap popover you need to call the .popover() in javascript.
Steps to fix Bootstrap Popover not working
Make sure you have included bootstrap js.
And have called the .popover() properly in javascript.
And you html part should call like this.
<a href="#" title="Bootstrap Popover Plugin Working Demo" data-toggle="popover-plugin" data-placement="top" data-content="Demo Content">Click</a>
For full code and working demo you can refer this article.
Bootstrap Popover Demo With Complete Code