更改BootStrap popover的默认样式及popover简单用法

.popover {  position: absolute;  top: 0;  left: 0;  z-index: 1060;  display: none;  max-width: 276px;  padding: 1px;  font-size: 14px;  font-weight: 400;  line-height: 1.42857143;  text-align: left;  white-space: normal;  background-color: #fff;  -webkit-background-clip: padding-box;  background-clip: padding-box;  border: 1px solid #ccc;  border: 1px solid rgba(0,0,0,.2);  border-radius: 6px;  -webkit-box-shadow: 0 5px 10px rgba(0,0,0,.2);  box-shadow: 0 5px 10px rgba(0,0,0,.2);}

 .popover{   padding:6px;  background-color:#000;   color:#fff;}

$('#freqsComboCheckbox').addClass('has-popover').attr('data-content', "Please Select Frequency!")            .popover({               placement: 'bottom',               container: '.areaBox',//将popover附加到特定的元素上              trigger: 'manual' //manual触发方式            }).popover('show');

$(".has-popover").not($('#freqsComboCheckbox')).removeClass('has-popover').popover('destroy');