真棒字体无法使用工具提示

Question

我希望从Bootstrap 4弹出一个工具提示，以在单击字体真棒图标时显示。 按钮没有任何反应。 我的代码如下：

  <a href='#' data-toggle='tooltip' title='Some tooltip text!'><i class='fa fa-info-circle' aria-hidden='true'>&nbsp;</i></a>

我需要做一个javascript函数吗？

编辑：

我有以下脚本：

    <script   src="https://code.jquery.com/jquery-3.1.1.min.js"   integrity="sha256-hVVnYaiADRTO2PzUGmuLJr8BLUSjGIZsDYGmIJLv2b8="   crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js" integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb" crossorigin="anonymous"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script>
<script src="https://use.fontawesome.com/0a5d051ab0.js"></script>

Answer 1

Tooltip是“选择加入”的组件，因此您必须在要使用工具提示的元素上调用.tooltip() 。

 $("[data-toggle='tooltip']").tooltip(); 

 <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous"> <script src="https://code.jquery.com/jquery-3.1.1.min.js" integrity="sha256-hVVnYaiADRTO2PzUGmuLJr8BLUSjGIZsDYGmIJLv2b8=" crossorigin="anonymous"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js" integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb" crossorigin="anonymous"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script> <script src="https://use.fontawesome.com/0a5d051ab0.js"></script> <div class="container"> <br><br> <a href='#' data-toggle='tooltip' title='Some tooltip text!'><i class='fa fa-info-circle' aria-hidden='true'>&nbsp;</i></a> </div>