bootstrap如何设置鼠标悬停提示

<button type="button" rel="drevil" data-content="报名截止时间：'+time+'" data-container="body" data-toggle="popover"

data-placement="bottom"></button>

$(function () { $("[data-toggle='popover']").popover(); });　　　　

　　  $("[rel=drevil]").popover({

                      trigger:'manual',

                      //placement : 'bottom', //placement of the popover. also can use top, bottom,

                      left or right

                      //天title : '<div style="text-align:center; color:red; text-decoration:underline;

                      font-size:14px;"> Muah ha ha</div>', //this is the top title bar of the popover.

                      add some basic css

                      html: 'true', //needed to show html of course

                      //content : '<div id="popOverBox"><img src="http://www.hd-report.com/wp-content

                      /uploads/2008/08/mr-evil.jpg" width="251" height="201" /></div>', //this is the

                      content of the html box. add the image here or anything you want really.

                      animation: false

                  }).on("mouseenter", function () {

                      var _this = this;

                      $(this).popover("show");

                      $(this).siblings(".popover").on("mouseleave", function () {

                          $(_this).popover('hide');

                      });

                  }).on("mouseleave", function () {

                      var _this = this;

                      setTimeout(function () {

                          if (!$(".popover:hover").length) {

                              $(_this).popover("hide")

                          }

                      }, 300);

                  });