css
page{ display: flex; flex-direction: column; height: 100%; } .navbar{ flex: none; display: flex; background: rgba( 0, 0, 0, 0.009 ); } .navbar .item{ position: relative; flex: auto; text-align: center; line-height: 80 rpx; } .navbar .item.active{ color: #FFCC00; } .navbar .item.active:after{ content: ""; display: block; position: absolute; bottom: 0; left: 0; right: 0; height: 4 rpx; background: #FFCC00; }js
data: { navbar: [ '首页', '信息'], currentTab: 0 }, navbarTap: function (e) { this.setData({ currentTab: e.currentTarget.dataset.idx }) },