bootstrap tooltips在 angularJS中的使用方法

<div class="s2" ng-init="InitTooltip()">  <input type="text" ng-pattern="/^(http|https|ftp)/://[a-zA-Z0-9/./,/?/'////+&%/$/#/=~:_/-/s@]+$/" class="inputwords" id="txtExamination" name="txtExamination" ng-model="csInfo.ExamUrl" placeholder="测验地址">  <span data-toggle="tooltip" data-placement="top" data-html="true" title="1、点击《新建测验》按钮 <br/> 2、测验创建完成后，点击页面右上角《共享》按钮>点击《复制》按钮 <br/> 3、把复制的url粘贴到此处即可" style="cursor: pointer;">   <i class="fa fa-question-circle-o examSpan"></i>  </span>  <span style="margin-left: 88px; width: 8px;"> <a target="_blank" href="https://forms.office.com/Pages/DesignPage.aspx">创建测验</a></span></div>

    $scope.InitTooltip = function() {      //初始化tips提示控件      $("[data-toggle='tooltip']").tooltip();    };

/**控制弹出层颜色和大小*/.tooltip-inner {  background: #fafafa !important;  text-align: left !important;  color: #363636 !important;  border: 1px solid #dedede;  max-width: 400px !important;  padding: 4px;}/**控制小三角透明度*/.tooltip-arrow{  border-bottom-color: #ffffff !important;  opacity: 0.3;}