单 选 ：
<view class="{{rubbishindex == index?‘err active‘:‘err‘}}" wx:for="{{rubbishlist}}" data-type="{{item}}" data-index="{{index}}" wx:key="index" bindtap="addrubbish">{{item}}</view>
data: {
rubbishlist:[‘厨余垃圾‘,‘可回收垃圾‘,‘有害垃圾‘,‘其他垃圾‘,‘其他垃圾‘,‘其他垃圾‘,],
rubbishindex:2,
}
addrubbish:function(e){
var that = this;
var index = e.currentTarget.dataset.index;
that.setData({
rubbishindex:index
})
},
发送参数：
box: that.data.rubbishlist[that.data.rubbishindex] //有害垃圾
多选：
boxnum:0,
riderCommentList: [{
value: ‘厨余垃圾‘,
selected: false ,
title: ‘厨余垃圾‘
},{
value: ‘可回收垃圾‘,
selected: false ,
title: ‘可回收垃圾‘
},{
value: ‘有害垃圾‘,
selected: false ,
title: ‘有害垃圾‘
},{
value: ‘其他垃圾‘,
selected: false ,
title: ‘其他垃圾‘
},{
value: ‘厨余垃圾‘,
selected: false ,
title: ‘厨余垃圾‘
},{
value: ‘可回收垃圾‘,
selected: false ,
title: ‘可回收垃圾‘
}]
<view class="{{item.selected ? ‘err active‘ : ‘err‘}}" wx:for="{{riderCommentList}}" wx:for-item="item" wx:key="item.index" bindtap="checkboxChange" data-value="{{item.value}}" data-index="{{index}}" >{{item.title}}</view>
checkboxChange(e){
var that = this;
console.log(‘checkboxChange e:‘,e);
let string = "riderCommentList["+e.target.dataset.index+"].selected"
this.setData({
[string]: !this.data.riderCommentList[e.target.dataset.index].selected
})
let detailValue = this.data.riderCommentList.filter(it => it.selected).map(it => it.value)
console.log(‘所有选中的值为：‘, detailValue)
console.log(‘个数为‘, detailValue.length)
that.setData({
boxnum:detailValue.length
})
},
//例如，在一个Array中，删掉偶数，只保留奇数，可以这么写： var arr = [1, 2, 4, 5, 6, 9, 10, 15]; var r = arr.filter(function (x) { return x % 2 !== 0; }); r; // [1, 5, 9, 15]
//把一个Array中的空字符串删掉，可以这么写： var arr = [‘A‘, ‘‘, ‘B‘, null, undefined, ‘C‘, ‘ ‘]; var r = arr.filter(function (s) { return s && s.trim(); // 注意：IE9以下的版本没有trim()方法 }); r; // [‘A‘, ‘B‘, ‘C‘]