为什么这个bootstrap popover不能正常工作

Question

为什么这个bootstrap popover不能正常工作？

 class SMSTemplateForm(forms.ModelForm):

    def clean(self):
        template_format = self.cleaned_data.get('template_form')

        if len(template_format) > 160:
            raise forms.ValidationError('SMS content too long.')

    return self.cleaned_data

的Javascript

<section id='popOver'>
   <figure>
      <button class="btn btn-primary center-block" id="popoverBtn" data-toggle="popover" title="Popover Header" data-content='Somne content insdie Popover'>Popover</button>
      <figcaption>Bootstrap Popover</figcaption>
   </figure>
</section>