<view class="item" wx:for="{{data}}" wx:for-item="item" wx:for-index="idx" data-idx="{{idx}}" bindtap="chooseItem">
 <view class="choosebtn {{idx==currentidx&&choose==true&#63;'choosedbtn':'choosenobtn'}}"></view>
 <text>{{idx==currentidx&&choose==true&#63;text:textTwo}}</text>
</view>

.item {
 width: 100%;
 height: 120rpx;
 background: #f5f5f5;
 display: flex;
 flex-direction: row;
 align-items: center;
 margin-bottom: 20rpx;
}

.item .choosebtn {
 width: 60rpx;
 height: 60rpx;
 border-radius: 50%;
 margin-left: 40rpx;
}

.item .choosenobtn {
 background: #c0c0c0;
}

.item .choosedbtn {
 background: #87ceeb;
}

.item text {
 margin-left: 30rpx;
}

Page({
 data: {
 // 讓所有的選項(xiàng)都成為未選中狀態(tài)
 choose: false,
 // 用來循環(huán)展示的數(shù)據(jù)
 data: [1, 2, 3],
 text: '選中了',
 textTwo: '沒選中'
 },
 // 點(diǎn)擊選項(xiàng)卡時(shí)的js
 chooseItem: function (e) {
 //記錄上次點(diǎn)擊的對象的序號(hào)
 var oldidx = this.data.currentidx;
 //記錄當(dāng)前點(diǎn)擊的對象的序號(hào)
 var currentidx = e.currentTarget.dataset.idx;
 if (oldidx == currentidx) {
  var choose = this.data.choose;
  this.setData({
  currentidx: currentidx,
  choose: !choose
  })
 } else {
  this.setData({
  currentidx: currentidx,
  choose: true
  });
 }
 }
})