单击时不显示Bootstrap弹出窗口

Question

我在菜单中进行注册/登录弹出并通过文件加载内容。我的问题是当我尝试从其他文件弹出窗口中访问弹出窗口时没有出现。（换句话说，通过远程访问内容）

这是我的代码

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
    <script src="js/bootstrap.min.js"></script>

  <li><i class="fa fa-users"></i><a href="register.html" id="signup" data-toggle="modal" data-target="#signup-modal">Sign Up</a></li>

On other file code where popup content is add
<div class="modal fade" id="signup-modal">
 <div class="modal-dialog">
     <div class="modal-content">
        <div class="modal-header signup_modal_header">
          <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
          <h2 class="modal-title" id="myModalLabel">Registration Form</h2>
        </div>
        <div class="modal-body signup-modal">content</div>
</div>
</div>
</div>