Bootstrap popover 实现鼠标移入移除显示隐藏功能方法

var strContent = '<div class="media"><div class="position-left media-left"><img class="img-circle" src="/assets/images/avatar.jpg">'+         '</div>'+         '<div class="media-body">'+          '<h4 class="media-title">小标题</h4>'+          '<p><strong>张三</strong> <span class="label label-primary">管理员</span></p>'+         '</div>'+         '</div>';$( 'li#user_avatar' ).popover({  trigger:'manual',	placement:'bottom',	html:true,	container:'#bs-example-navbar-collapse-1',	content:strContent,}).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' )     }  }, 100); });