微信小程序模拟购物界面联动

Posted 2021-08-25 generallizhong

在后续我会上传整个demo,这里先介绍简单的一部分。

 简单的界面效果图：

 直接看代码：

一、WXML代码示例：

<view >  
  <!--左侧栏-->
  <scroll-view class=\'scroll_left\' scroll-y="true">
    <view > 
      <block wx:for="{{list}}" wx:for-index="idx" wx:for-item="itemName" wx:key="*this">  
        <!--当前项的id等于item项的id，那个就是当前状态-->  
        <!--用data-index记录这个数据在数组的下标位置，使用data-id设置每个item的id值，供打开右侧侧滑栏使用-->  
        <view  bindtap="switchRightTab" data-index="{{index}}" data- >{{itemName[0].name}}</view>  
      </block>  
    </view>
  </scroll-view>

  <!--右侧栏-->
  <!--如果使用 scroll-into-view 属性，必须设置 scroll-view 的高度，且最好是动态获取屏幕高度 -->
  <!-- scroll-into-view 属性 值应为某子元素id（id不能以数字开头）。设置哪个方向可滚动，则在哪个方向滚动到该元素 -->
  <scroll-view scroll-y="true"  style="height:{{winHeight}}px;" scroll-into-view="{{scrollTopId}}" scroll-with-animation="true">
    <view > 
      <view class=\'mink\' wx:for="{{list}}" wx:for-index="idx" wx:for-item="itemName" wx:key="*this" bindscroll="scrollTop">
        <view class=\'minl\' id=\'{{idx}}\'>{{itemName[0].name}}</view>
          <block wx:for="{{itemName}}" wx:for-index="idex" wx:key="*this" > 
            <view  wx:if="{{idex>0}}">  
              <navigator url="../detail/detail" hover->
                <view>   
                  <image src="{{item.picture}}"></image>
                  <view >  
                    <text>{{item.desc}}</text>  
                  </view> 
                </view>  
              </navigator>  
            </view>      
          </block> 
        </view>
      <view style="width:100%;height:30rpx;background:#f0f4f7"></view>       
    </view>
  </scroll-view>
</view>  

二、.JS代码示例

 var list = {
  "List": [
    {
      \'A\': [
        { name: \'测试1\' },
        { \'picture\': \'../images/t1.png\', \'desc\': \'测试1-1\' },
        { \'picture\': \'../images/t2.png\', \'desc\': \'测试1-2\' },
        { \'picture\': \'../images/t3.png\', \'desc\': \'测试1-3\' },
        { \'picture\': \'../images/t1.png\', \'desc\': \'测试1-4\' }
      ],
      \'B\': [
        { name: \'测试2\' },
        { \'picture\': \'../images/t1.png\', \'desc\': \'测试2-1\' },
        { \'picture\': \'../images/t2.png\', \'desc\': \'测试2-1\' },
        { \'picture\': \'../images/t3.png\', \'desc\': \'测试2-3\' },
        { \'picture\': \'../images/t1.png\', \'desc\': \'测试2-4\' }
      ],
      \'C\': [
        { name: \'测试3\' },
        { \'picture\': \'../images/t1.png\', \'desc\': \'测试3-1\' },
        { \'picture\': \'../images/t2.png\', \'desc\': \'测试3-2\' },
        { \'picture\': \'../images/t3.png\', \'desc\': \'测试3-3\' },
        { \'picture\': \'../images/t1.png\', \'desc\': \'测试3-4\' }
      ],
      \'D\': [
        { name: \'测试4\' },
        { \'picture\': \'../images/t1.png\', \'desc\': \'测试4-1\' },
        { \'picture\': \'../images/t2.png\', \'desc\': \'测试4-2\' },
        { \'picture\': \'.../images/t3.png\', \'desc\': \'测试4-3\'},
        { \'picture\': \'../images/t1.png\', \'desc\': \'测试4-4\'}
      ],
      \'E\': [
        { name: \'测试5\' },
        { \'picture\': \'../images/t1.png\', \'desc\': \'测试5-1\' },
        { \'picture\': \'../images/t2.png\', \'desc\': \'测试5-2\' },
        { \'picture\': \'../images/t3.png\', \'desc\': \'测试5-3\' },
        { \'picture\': \'../images/t1.png\', \'desc\': \'测试5-4\' }
      ],
      \'F\': [
        { name: \'测试6\' },
        { \'picture\': \'../images/t1.png\', \'desc\': \'测试6-1\' },
        { \'picture\': \'../images/t2.png\', \'desc\': \'测试6-2\' },
        { \'picture\': \'../images/t3.png\', \'desc\': \'测试6-3\' },
        { \'picture\': \'../images/t1.png\', \'desc\': \'测试6-4\' }
      ],
      \'G\': [
        { name: \'测试7\' },
        { \'picture\': \'../images/t1.png\', \'desc\': \'测试7-1\' },
        { \'picture\': \'../images/t2.png\', \'desc\': \'测试7-2\' },
        { \'picture\': \'../images/t3.png\', \'desc\': \'测试7-3\' },
        { \'picture\': \'../images/t1.png\', \'desc\': \'测试7-4\' }
      ],
    }
  ],
}
module.exports = list;
Page({
  data: {
    // 左侧点击类样式
    curNav: \'A\',
  },
  onReady: function () {
    // 生命周期函数--监听页面初次渲染完成
    var listChild1 = list.List[0];
    var that = this;
    // 获取可视区高度
    wx.getSystemInfo({
      success: function (res) {
        that.setData({
          list: listChild1,
          winHeight: res.windowHeight,
        })
      }
    })
  },
  //点击左侧 tab ，右侧列表相应位置联动 置顶
  switchRightTab: function (e) {
    var id = e.target.id;
    console.log(typeof id)
    this.setData({
      // 动态把获取到的 id 传给 scrollTopId
      scrollTopId: id,
      // 左侧点击类样式
      curNav:id
    })
  }
})   

图片路径可自行新建文件夹images里添加

 

三.WXSS代码示例

/*总体主盒子*/
.container {
  position: relative;
  width: 100%;
  height: 1220rpx;
  background-color: #f0f4f7;
  color: #939393;
}

/*左侧栏主盒子*/
.nav_left {
  /*设置行内块级元素（没使用定位）*/
  display: inline-block;
  width: 100%;
  height: 100%;
  /*主盒子设置背景色为灰色*/
  background: #fff;
  text-align: center;
  /* position: fixed;  */
  left: 0;
  top: 0;
  border-top: 1rpx solid #dedede;
}

/*左侧栏list的item*/
.nav_left .nav_left_items {
  background: #fff;
  /*每个高30px*/
  height: 80rpx;
  /*垂直居中*/
  line-height: 80rpx;
  /*再设上下padding增加高度，总高42px*/
  padding: 15rpx 0;
  /*只设下边线*/
  border-bottom: 1px solid #dedede;
  /*文字14px*/
  font-size: 29rpx;
  color: #101010;
  font-weight:
}

/*左侧栏list的item被选中时*/
.nav_left .nav_left_items.active {
  /*背景色变成白色*/
  background: #f0f4f7;
  color: #ed1000;
}

/*右侧栏主盒子*/
.scroll_right {
  /*右侧盒子使用了绝对定位*/
  position: fixed;
  top: 0;
  right: 0;
  overflow: auto;
  flex: 1;
  /*宽度75%，高度占满，并使用百分比布局*/
  width: 75%;
  height: 100%;
  padding: 20rpx;
  box-sizing: border-box;
  background-color: #f0f4f7;
  border-top: 1rpx solid #dedede;
}

.mink::after {
  display: block;
  content: \'\';
  clear: both;
}

.jiul,
.jiul image {
  width: 100%;
  height: 170rpx;
}

.minl {
  font-size: 29rpx;
  color: #777;
  text-align: left;
  line-height: 60rpx;
  float: left;
  background: #f0f4f7;
  width: 100%;
  /* height: 50rpx;  */
}

.mink {
  width: 100%;
  background: #fff;
  height: 100%;
}

/*右侧栏list的item*/
.nav_right_items {
  /*浮动向左*/
  float: left;
  /*每个item设置宽度是33.33%*/
  width: 50%;
  /* height: 160rpx;   */
  text-align: center;
  color: #4a4a4a;
  background: #fff;
}

.nav_right_items image {
  /*被图片设置宽高*/
  width: 60px;
  height: 50px;
  margin-top: 15rpx;
}

.nav_right_items text {
  /*给text设成块级元素*/
  display: block;
  margin-top: 5rpx;
  margin-bottom: 10rpx;
  font-size: 26rpx;
  /*设置文字溢出部分为...*/
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

/** 自定义其他点击态样式类 **/
.other-navigator-hover {
  background: #fff;
}

.scroll_left {
  width: 25%;
  height: 100%;
  background: #fff;
  text-align: center;
  position: fixed;
  left: 0;
  top: 0
}

                                                                                             -END