在微信小程序开发文档中提供了在json文件中配置tab切换的方法,那便是tabBar,其底层原理就是三个页面的来回切换,而且此tab只能放在网页底部或者头部,局限性非常大。那么当我们有一个需求是实现一个页面下tab切换功能而并非多个页面,在微信小程序中又该怎么做呢?
话不多说,上源码:
WXML:
<view class="swiper-tab"> <view class="swiper-tab-list {{currentTab==0 ? 'on' : ''}}" data-current="0" bindtap="swichNav">产品</view> <view class="swiper-tab-list {{currentTab==1 ? 'on' : ''}}" data-current="1" bindtap="swichNav">金融</view> <view class="swiper-tab-list {{currentTab==2 ? 'on' : ''}}" data-current="2" bindtap="swichNav">理财</view> </view> <swiper current="{{currentTab}}" class="swiper-box" duration="300" style="height:{{winHeight - 31}}px" bindchange="bindChange"> <swiper-item> <view>产品</view> </swiper-item> <swiper-item> <view>金融</view> </swiper-item> <swiper-item> <view>理财</view> </swiper-item> </swiper>
用三元表达式判断currentTab==Num是否为真,如果为真,动态添加on类名,执行标记样式,这样就实现了上面list列表的切换,至于内容重定义了data下的currentTab,让其与之对应显示,这样一个简单的tab切换功能就实现了,而且不受位置的限制,更改css样式可随意布局
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WXSS:
.swiper-tab{ width: 100%; text-align: center; line-height: 80rpx;} .swiper-tab-list{ font-size: 30rpx; display: inline-block; width: 33.33%; color: #777777; } .on{ color: blue; border-bottom: 3rpx solid blue;} .swiper-box{ display: block; height: 100%; width: 100%; overflow: hidden; } .swiper-box view{ text-align: center; }
JS:
Page({ data: { winWidth: 0, winHeight: 0, currentTab: 0, }, onLoad: function() { var that = this; /** * 获取当前设备的宽高 */ wx.getSystemInfo( { success: function( res ) { that.setData( { winWidth: res.windowWidth, winHeight: res.windowHeight }); } }); }, // tab切换逻辑 swichNav: function( e ) { var that = this; if( this.data.currentTab === e.target.dataset.current ) { return false; } else { that.setData( { currentTab: e.target.dataset.current }) } }, bindChange: function( e ) { var that = this; that.setData( { currentTab: e.detail.current }); }, })
效果图:

list.gif
作者:IT小白_
链接:https://www.jianshu.com/p/1a3405f77654
来源:简书
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