为jsGrid itemTemplete函数返回的内容添加引导工具提示

itemTemplate: function(value, item) {
  return '<div class="tooltip-container">' +
           '<span class="item-value">' + value + '</span>' +
           '<span class="tooltip">点击查看详情</span>' +
         '</div>';
}

.tooltip-container {
  position: relative;
  display: inline-block;
}

.tooltip {
  visibility: hidden;
  width: 200px;
  background-color: #000;
  color: #fff;
  text-align: center;
  border-radius: 5px;
  padding: 5px;
  position: absolute;
  z-index: 1;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0;
  transition: opacity 0.3s;
}

.tooltip-container:hover .tooltip {
  visibility: visible;
  opacity: 1;
}