微信小程序选项卡之跳转

　　时隔一个月之久今天再聊聊小程序吧，选项卡是在PC以及移动端经常使用的，这次在开发小程序的过程中一个选项卡可把我难住了，今天咱们就来说一下。

大多数的商城类小程序都有这个功能，点击“全部订单”，“待付款”，“待发货”，“待收货”，“已完成”，会跳转页面且跳至与之相对应的选项卡中。所以我们在开发该小程序时也做了相同的功能。如下图：

 

 

选项卡静态布局思路： 主要用到 scroll-view与 swiper标签，选项卡切换主要依靠 swiper 中的 current 属性，不懂请自行查看小程序API。
跳转页面且跳至与之相对应的选项卡思路：
首先在 app.js 中配置 globalData。
在“个人中心” js 文件中配置点击该项跳转至与之对应的 tab 的 index。
在“个人中心”跳转页面时通过 globalData 传递 index 给“全部订单”页面，“全部订单”页面通过 app.globalData.currentLocation 接受数据，改变选项卡的切换。

app.js 代码

  globalData: {
    userInfo: null
  }

个人中心 wxml 代码

<!--九宫格  -->
<view class="page">
  <view class="page__bd">
    <view class="weui-grids">
      <view class="allrec" bindtap="allForm">
          <text>我的订单</text>
          <view class="more">查看更多订单</view>
          <image class='moreImg' src='../../img/more.png'></image>
      </view>
      <!--待付款  -->
      <view class="weui-grid" hover-class="weui-grid_active" bindtap="noPay">
        <image class="weui-grid__icon" src="../../img/wallet.png" />
        <view class="weui-badge" hidden="{{false}}">{{badgeNum1}}</view>
        <view class="weui-grid__label label">待付款</view>
      </view>

      <!--待发货  -->  
      <view class="weui-grid" hover-class="weui-grid_active" bindtap="noSend">
        <image class="weui-grid__icon" src="../../img/wallet-1.png" />
        <view class="weui-badge" hidden="{{false}}">{{badgeNum1}}</view>
        <view class="weui-grid__label label">待发货</view>
      </view>

      <!--已发货  -->
      <view class="weui-grid" hover-class="weui-grid_active" bindtap="sended">
        <image class="weui-grid__icon" src="../../img/wallet-2.png" />
        <view class="weui-badge" hidden="{{false}}">{{badgeNum1}}</view>
        <view class="weui-grid__label label">待收货</view>
      </view>

      <!--已完成  -->
      <view class="weui-grid" hover-class="weui-grid_active" bindtap="completed">
        <image class="weui-grid__icon" src="../../img/wallet-3.png" />
        <view class="weui-grid__label label">已完成</view>
      </view>
    </view>
  </view>
</view>

个人中心 js 代码

var app = getApp()
var util = require('../../utils/util.js')
var formatLocation = util.formatLocation

Page({
  data: {
  },
  // 指定 全部订单 和 九宫格中按钮 点击跳转至 选项卡中 与之对应的tab
  allForm:function(){
    app.globalData.currentLocation = 0,
    wx.navigateTo({ url: '../orderForm/orderForm' }) 
  },
  noPay:function(){
    app.globalData.currentLocation = 1,
    wx.navigateTo({ url: '../orderForm/orderForm' })  
  },
  noSend:function(){
    app.globalData.currentLocation = 2,
    wx.navigateTo({ url: '../orderForm/orderForm' }) 
  },
  sended:function(){
    app.globalData.currentLocation = 3,
    wx.navigateTo({ url: '../orderForm/orderForm' }) 
  },
  completed:function(){
    app.globalData.currentLocation = 4,
    wx.navigateTo({ url: '../orderForm/orderForm' }) 
  }
})

个人中心 wxss 代码 (样式可能会不全，需要引入weui.wxss文件)

/*九宫格  */
.weui-grids{
  border-left: none;
}
.weui-grid{
   25%;
  border: none;
  position: relative;
  padding:20px 10px 10px;
}
.weui-grid .weui-badge{
 12rpx;
height: 28rpx;
border-radius: 50%;
  position: absolute;
  right: 40rpx;
  top: 20rpx;
  background: #df0202;
}


/* list  */
.weui-cell__hd{
  margin-right: 30rpx;
  vertical-align: middle;
  20px;
  height: 20px;
}
.weui-cell__hd image{
   50rpx;
  height: 50rpx;
}
.weui-cell__ft{
  color: #fff;
  background: #dd3838;
  border-radius: 20rpx;
  text-align: center;
  margin-right: 10rpx;
  padding: 0 5rpx;
}
.all{
    font-size: 30rpx;
}

全部订单 wxml 代码

<!--全部订单页  -->
  <!--选项卡标题  -->

<scroll-view scroll-x="true" bindscroll="scroll" class="scroll-view_H list-liu">
  <view class="scroll-view-item_H swiper-tab-list {{currentTab==0?'on':''}}" data-current="0" bindtap="swichNav" hover-class="eee">全部</view>
  <view class="scroll-view-item_H swiper-tab-list {{currentTab==1?'on':''}}" data-current="1" bindtap="swichNav" hover-class="eee">待付款</view>
  <view class="scroll-view-item_H swiper-tab-list {{currentTab==2?'on':''}}" data-current="2" bindtap="swichNav" hover-class="eee">待发货</view>
  <view class="scroll-view-item_H swiper-tab-list {{currentTab==3?'on':''}}" data-current="3" bindtap="swichNav" hover-class="eee">已发货</view>
  <view class="scroll-view-item_H swiper-tab-list {{currentTab==4?'on':''}}" data-current="4" bindtap="swichNav" hover-class="eee">已完成</view>
</scroll-view>
  
<!-- 选项卡内容 -->
<swiper current="{{currentTab}}" class="swiper-box" duration="300" bindchange="bindChange" style="height:{{clientHeight?clientHeight+'px':'auto'}}">  
    <!-- 全部订单 内容 --> 
  <swiper-item>  
    <scroll-view scroll-y="{{true}}" style="height: {{clientHeight?clientHeight+'px':'auto'}}">
      <view class="kong"></view>
      <!--写入显示内容  -->
      <view class="list" wx:for="{{carts}}" wx:key="*this">
        <!-- 图片 -->
        <view class="pic">
          <image src="{{item.imgurl}}"></image>
        </view>
        <!-- 类型表述 -->
        <view class="con">
          <text class="type1">{{item.type1}}</text>
          <text class="type2">{{item.type2}}</text>
        </view>
        <!-- 价格 -->
        <view class="price">
          <text class="price1">￥{{item.price}}</text>
          <text class="number">×{{item.num}}</text>
        </view>
      </view>
    </scroll-view>
  </swiper-item>  
    <!-- 待付款 内容 --> 
  <swiper-item>  
    <scroll-view scroll-y="{{true}}" style="height: {{clientHeight?clientHeight+'px':'auto'}}">
      <view class="kong"></view>
      <!--写入显示内容  -->
      <view class="list" wx:for="{{carts}}" wx:key="*this">
        <!-- 图片 -->
        <view class="pic">
          <image src="{{item.imgurl}}"></image>
        </view>
        <!-- 类型表述 -->
        <view class="con">
          <text class="type1">{{item.type1}}</text>
          <text class="type2">{{item.type2}}</text>
        </view>
        <!-- 价格 -->
        <view class="price">
          <text class="price1">￥{{item.price}}</text>
          <text class="number">×{{item.num}}</text>
        </view>
      </view>
    </scroll-view>
  </swiper-item>  
    <!-- 待发货 内容 -->
  <swiper-item>  
    <scroll-view scroll-y="{{true}}" style="height: {{clientHeight?clientHeight+'px':'auto'}}">
      <view class="kong"></view>
      <!--写入显示内容  -->
      
      <view class="list" wx:for="{{carts}}" wx:key="*this">
        <!-- 图片 -->
        <view class="pic">
          <image src="{{item.imgurl}}"></image>
        </view>
        <!-- 类型表述 -->
        <view class="con">
          <text class="type1">{{item.type1}}</text>
          <text class="type2">{{item.type2}}</text>
        </view>
        <!-- 价格 -->
        <view class="price">
          <text class="price1">￥{{item.price}}</text>
          <text class="number">×{{item.num}}</text>
        </view>
      </view>
    </scroll-view>
  </swiper-item>  
    <!-- 已发货 内容 -->
  <swiper-item>  
    <scroll-view scroll-y="{{true}}" style="height: {{clientHeight?clientHeight+'px':'auto'}}">
      <view class="kong"></view>
      <!--写入显示内容  -->
      <view class="list" wx:for="{{carts}}" wx:key="*this">
        <!-- 图片 -->
        <view class="pic">
          <image src="{{item.imgurl}}"></image>
        </view>
        <!-- 类型表述 -->
        <view class="con">
          <text class="type1">{{item.type1}}</text>
          <text class="type2">{{item.type2}}</text>
        </view>
        <!-- 价格 -->
        <view class="price">
          <text class="price1">￥{{item.price}}</text>
          <text class="number">×{{item.num}}</text>
        </view>
      </view>
    </scroll-view>
  </swiper-item> 
    <!-- 已完成 内容 -->
  <swiper-item>  
    <scroll-view scroll-y="{{true}}" style="height: {{clientHeight?clientHeight+'px':'auto'}}">
      <view class="kong"></view>
      <!--写入显示内容  -->
      <view class="list" wx:for="{{carts}}" wx:key="*this">
        <!-- 图片 -->
        <view class="pic">
          <image src="{{item.imgurl}}"></image>
        </view>
        <!-- 类型表述 -->
        <view class="con">
          <text class="type1">{{item.type1}}</text>
          <text class="type2">{{item.type2}}</text>
        </view>
        <!-- 价格 -->
        <view class="price">
          <text class="price1">￥{{item.price}}</text>
          <text class="number">×{{item.num}}</text>
        </view>
      </view>
    </scroll-view>
  </swiper-item> 
</swiper>  

全部订单 js 代码

// 全部订单页

//获取应用实例
var app = getApp()
Page({
  /*** 页面的初始数据 */
  data: {
    // 选项卡
    winWidth: 0,
    winHeight: 0,
    // tab切换  
    currentTab: 0, 
    // 商品内容数据
    carts: [
      { imgurl: '../../img/fen-2.jpg', type1: '【老酒特卖】45℃老白汾十年陈酿500ML(2008-2009)', type2: '清香型', price: 100, num: 1 }, 
      { imgurl: '../../img/fen-1.jpg', type1: '【老酒特卖】45℃老白汾十年陈酿500ML(2008-2009)', type2: '清香型', price: 100, num: 1 },
      { imgurl: '../../img/fen-2.jpg', type1: '【老酒特卖】45℃老白汾十年陈酿500ML(2008-2009)', type2: '清香型', price: 100, num: 1 },
      { imgurl: '../../img/fen-1.jpg', type1: '【老酒特卖】45℃老白汾十年陈酿500ML(2008-2009)', type2: '清香型', price: 100, num: 1 },
    ],
  },
  /** * 滑动切换tab  */
  bindChange: function (e) {
    var that = this;
    that.setData({ currentTab: e.detail.current });
  },
  /** * 点击tab切换  */
  swichNav: function (e) {
    var that = this;
    if (this.data.currentTab === e.target.dataset.current) {
      return false;
    } else {
      that.setData({
        currentTab: e.target.dataset.current
      })
    }
  },
  /*** 生命周期函数--监听页面加载*/
  onLoad: function (options) {
    var that = this;
    /** * 获取系统信息  */
    wx.getSystemInfo({
      success: function (res) {
        that.setData({
          clientHeight: res.windowHeight
        });
      }
    });
  },
  /*** 生命周期函数--监听页面显示*/
  onShow: function () {
    if (app.globalData.currentLocation == '') {
      this.setData({
        currentTab: 0
      });
    } else {
      var i = app.globalData.currentLocation;
      this.setData({
        currentTab: i
      });
    }
  }
})

全部订单 wxss 代码

.scroll-view_H{
  white-space: nowrap;
}
.scroll-view-item_H{
  display: inline-block;
   20%;
  box-sizing: border-box;
}
.list-liu{
   100%;
  height: 85rpx;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 1;
  background: #fff;
  border: 1rpx solid #eee;
}
.on{
  color: #c80611;
}
.list-liu .swiper-tab-list{
  text-align: center;
  line-height: 85rpx;
  font-size: 34rpx;
}
.kong{
   100%;
  height: 85rpx;
}
/*----------------------分割线-------------------  */
/*购物车 全部订单 我的收藏 浏览记录 样式  */
/* 列表 */
.list{ 100%;background: #fff;margin-top:20rpx;display: flex;box-sizing: border-box;padding:10rpx 30rpx 10rpx 30rpx ;border-bottom: 1px solid #eee}
.carts-radio{flex: 1;line-height: 180rpx;text-align: center}/* 选项框 */
.pic{flex: 3;height: 180rpx;}
.pic image{ 100%;height: 100%;}
.con{flex: 6;padding-left: 20rpx;padding-bottom: 20rpx;box-sizing: border-box}
view,text,block{
    font-family: "Microsoft Yahei"
}
/* 类型描述 */
.type1{
  padding-top: 10rpx;
  display: block;
  font-size: 30rpx;
  color: #323232;
  100%;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient: vertical;
}
 .type2{
   display: flex;
  font-size: 28rpx;
  color: #666;
  100%;
  padding-top: 20rpx;box-sizing: border-box
}


/* 数量 */
.num{
   140rpx;
  height: 40rpx;
  border: 1px solid #eee;
  margin-top: 15rpx;
  background: #fff
} 
.num2{
  float: left;
   56rpx;
  line-height: 40rpx;
  text-align: center;
 font-size: 28rpx;
 color: #666666
}
.num1{float: left;
 40rpx;
height: 40rpx;
line-height: 40rpx;
text-align: center;
font-size: 36rpx;
padding: 0;
color: #4a4949;
border-right: 1px solid #eee;
}
.num3{
float: right;
 40rpx;
height: 40rpx;
line-height: 40rpx;
text-align: center;
font-size: 36rpx;
padding: 0;
margin: 0;
border-radius: 0px;
color: #4a4949;
border-left: 1px solid #eee;
} 

/* 价格 */
.price{flex: 3;font-size: 30rpx;color: #c90211;box-sizing: border-box;position: relative}
 .price1{position: absolute;right: 0;top: 0}
 .number{position: absolute;right: 0;top: 40rpx}

/* 删除 */
.del{ 50rpx;height: 50rpx;position: absolute;right: 0;bottom: 20rpx}

/*----------------------分割线-------------------  */
/**app.wxss**/
.container {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 200rpx 0;
  box-sizing: border-box;
} 
/*----------------------分割线-------------------  */
/*首页商品类样式  */
.content{
  display: flex;
  flex-wrap:  wrap;
}
.content-1{
   375rpx;
  /* height: 420rpx; */
  padding:20rpx 10rpx ;
  box-sizing: border-box;
  border-bottom: 2rpx solid #cccccc;
  border-right: 1rpx solid #cccccc;
}
.content-1 image{
   374rpx;
  height: 252rpx;
  margin-left: -8rpx;
}
.content-1 .price .text-price{
  color: #b20000;
  font-size: 32rpx;
  font-weight: bold;
}
.content-1 .price .text-yj{
  color: #656565;
  font-size: 24rpx;
}
.content-1 .price .text-oldprice{
  text-decoration: line-through;
  color: #656565;
  font-size: 24rpx;
}
.content-1 .name .text-name{
  font-size: 28rpx;
  color: #323232;
}
.content-1 .dress{
  margin-top: 10rpx;
}
.content-1 .dress .dress-1{
  float: left;
  color: #989898;
  font-size: 24rpx;
}
.content-1 .dress .dress-2{
  float: right;
  color: #989898;
  font-size: 24rpx;
  margin-right: 20rpx;
}