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微信小程序開發(fā)之改變data中數(shù)組或?qū)ο蟮哪骋粚傩灾?/h1>

更新時間：2018年07月05日 10:12:12 作者：狗尾草的博客

本文通過案例給大家分析了微信小程序開發(fā)之改變data中數(shù)組或?qū)ο蟮哪骋粚傩灾?本文通過實(shí)例代碼相結(jié)合的形式給大家介紹的非常詳細(xì)，具有一定的參考借鑒價值，需要的朋友可以參考下

前言：在小程序的開發(fā)中，我們在view中便利data中數(shù)組或?qū)ο髸r，很多情況下需要在js中動態(tài)改變數(shù)組或者對象中某一香的屬性值。

效果圖：

我給大家總結(jié)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(shí)現(xiàn)思路：點(diǎn)擊某一個日期時，獲取當(dāng)前點(diǎn)擊的下表，點(diǎn)擊事件bindtap可以獲取到所點(diǎn)擊的元素的自定義屬性，也就是所點(diǎn)擊的元素的在data中數(shù)組的下標(biāo)，點(diǎn)擊觸發(fā)，清空所有對象中selected的值，然后將所點(diǎn)擊的下標(biāo)的selected值變?yōu)閒ocus就可實(shí)現(xiàn)點(diǎn)擊某一元素動態(tài)改變數(shù)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"http://這里需要將設(shè)置的屬性用字符串進(jìn)行拼接
   this.setData({
   [oSelected]: "focus"
   })
  }
 })
},
})

總結(jié)

以上所述是小編給大家介紹的微信小程序開發(fā)之改變data中數(shù)組或?qū)ο蟮哪骋粚傩灾?，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(fù)大家的。在此也非常感謝大家對腳本之家網(wǎng)站的支持！

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