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

2020-03-21 16:15:39

字體：大中小

來(lái)源：轉(zhuǎn)載

供稿：網(wǎng)友

前言：在小程序的開(kāi)發(fā)中，我們?cè)趘iew中便利data中數(shù)組或?qū)ο髸r(shí)，很多情況下需要在js中動(dòng)態(tài)改變數(shù)組或者對(duì)象中某一香的屬性值。

效果圖：

微信小程序開(kāi)發(fā)之改變data中數(shù)組或?qū)ο蟮哪骋粚傩灾? alt=

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(gè)日期時(shí)，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(duì)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(dòng)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"//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(kāi)發(fā)之改變data中數(shù)組或?qū)ο蟮哪骋粚傩灾担Ｍ麑?duì)大家有所幫助，如果大家有任何疑問(wèn)請(qǐng)給我留言，小編會(huì)及時(shí)回復(fù)大家的。在此也非常感謝大家對(duì)VEVB武林網(wǎng)網(wǎng)站的支持！

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