微信小程序循环数组、对象

数据- >  meals: { breakfast: false, lunch: false, dinner: false, temp: true }

  <view  
        wx:for="{{meals}}"    wx:for-index="key"   wx:for-item="value"  wx:key="key" >
        <text>{{key}}</text>
 </view>

key是属性对应属性（breakfast、lunch、dinner、temp），value对应属性的值（false、true）

下面是数组里面套对象

weekDays: [

{

dayName: '周一',

date: '04.14',

selected: false,

meals: { breakfast: false, lunch: false, dinner: false, temp: false }

},

{

dayName: '周二',

date: '04.15',

selected: false,

meals: { breakfast: false, lunch: false, dinner: false, temp: false }

},

{

dayName: '周三',

date: '04.16',

selected: false,

meals: { breakfast: false, lunch: false, dinner: false, temp: false }

}

],

mealTextMap: {

breakfast: '早餐',

lunch: '午餐',

dinner: '晚餐',

temp: '临时餐'

},

<block wx:for="{{weekDays}}" wx:key="date">
    <view class="day-info">
      <checkbox   class="day-checkbox" 
        bindtap="toggleDay"   data-day="{{index}}"  checked="{{item.selected}}"
     ></checkbox>
        <view>{{item.dayName}}</view>
        <view class="day-date">({{item.date}})</view>
    </view>
    
    <view class="meal-options">
      <view 
        class="meal-option {{value ? 'selected' : ''}}"

        wx:key="key"   bindtap="toggleMeal" 
        wx:for="{{item.meals}}"    wx:for-index="key"   wx:for-item="value" 
        data-index="{{index}}"   data-key="{{key}}"  data-value="{{value}}"
      >
        <text>{{mealTextMap[key]}}</text>
      </view>
    </view>
</block>