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：
<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，然后將所點擊的下標的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"//這里需要將設置的屬性用字符串進行拼接 this.setData({ [oSelected]: "focus" }) } })},})總結
以上所述是小編給大家介紹的微信小程序開發之改變data中數組或對象的某一屬性值，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對VEVB武林網網站的支持！
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