小程序開發之改變data中數組或對象的某一屬性值
阿新 • • 發佈:2018-07-05
字符 padding his 動態改變 htm enter 數組 小程序開發 white 前言:在小程序的開發中,我們在view中便利data中數組或對象時,很多情況下需要在js中動態改變數組或者對象中某一香的屬性值。
效果圖:
我給大家總結了案例如下:
wxml如下:
這裏狗尾草也就給大家總結完了,希望對大家有所幫助,有問題記得及時反饋哦,狗尾草和大家一起進步。
<scroll-view class=‘hd-cont‘ scroll-x="true" style=‘width: 100%‘> <view wx:for="{{sDate}}" wx:key="{{index}}" class=‘date-cont‘> <view>{{item.week}}</view> <view bindtap=‘select‘ data-index="{{index}}" class=‘ curl {{item.selected}}‘>{{item.date}}</view> </view> </scroll-view>
wxss如下:
.hd-cont { height: 126rpx; white-space: nowrap; padding-left: 20rpx; color: #fff; font-size: 28rpx; box-sizing: border-box; } .date-cont { width: 40rpx; margin-right: 70rpx; height: 100%; display: inline-block; padding-top: 10rpx; box-sizing: border-box; text-align: center; } .curl { width: 40rpx; height: 40rpx; border-radius: 50%; line-height: 40rpx; } .date-cont view:first-child { margin-bottom: 20rpx; } .focus { display: inline-block; width: 40rpx; height: 40rpx; font-family: Monaco;">#fff; color: #16cc80; border-radius: 50%; line-height: 40rpx; }
wxjs如下: 實現思路:點擊某一個日期時,獲取當前點擊的下表,點擊事件bindtap可以獲取到所點擊的元素的自定義屬性,也就是所點擊的元素的在data中數組的下標,點擊觸發,清空所有對象中selected的值,然後將所點擊的下標的selected值變為focus就可實現點擊某一元素動態改變數組中的某一屬性值。
Page({ data: { sDate: [ { "week": "日", "date": "01" ,"selected": "focus" }, { "week": "一", "date": "02", "selected": " " }, { "week": "二", "date": "03", "selected": " " }, { "week": "三", "date": "04", "selected": " " }, { "week": "四", "date": "05", "selected": " " }, { "week": "五", "date": "06", "selected": " " }, { "week": "六", "date": "07", "selected": " " }, { "week": "日", "date": "08", "selected": " " }, { "week": "一", "date": "09", "selected": " " }, { "week": "二", "date": "10", "selected": " " }, { "week": "三", "date": "11", "selected": " " }, { "week": "四", "date": "12", "selected": " " }, { "week": "五", "date": "13", "selected": " " }, { "week": "六", "date": "14", "selected": " " }, ] }, select: function (e) { var oIndex = e.currentTarget.dataset.index; var array = this.data.sDate; array.forEach( (item,index,arr) => { var sItem = "sDate["+ index + "].selected"; this.setData({ [sItem]: " " }) console.log([sItem]); if(index == oIndex) { var oSelected = "sDate[" + index + "].selected"//這裏需要將設置的屬性用字符串進行拼接 this.setData({ [oSelected]: "focus" }) } }) }, })
小程序開發之改變data中數組或對象的某一屬性值