問題描述

// page3.jsPage({ data:{ option1: [ { value: '1', contant: 'A:xxxx', checked: false }, { value: '2', contant: 'B:xxxx', checked: false }, { value: '3', contant: 'C:xxxx', checked: false }, { value: '4', contant: 'D:xxxx', checked: false } ], }, swiperChange: function(e){ var that = this; console.log(that.data.option1[e.detail.value - 1].checked); that.data.option1[e.detail.value - 1].checked = true; }})<!--page3.wxml--><radio-group bindchange='swiperChange'> <label wx:for='{{option1}}' ><radio value='{{item.value}}' checked='{{item.checked}}' />{{item.contant}}<icon type='success_no_circle' size='24' /> </label></radio-group>/* page3.wxss */radio{ display: none}.option{ border: 1px solid #ffe131; display: block; text-align: center; margin: 10% auto; width: 80%;}

請問在小程序中如何讓icon在選項選中時自動顯示

問題解答

我只是修改一下swiperChange函數：

swiperChange: function (e) { this.data.option1.forEach( (item) => { item.checked = item.value === e.detail.value? true:false; }); this.setData({ option1: this.data.option1 }); }