小程序全选与反选

// 全选

select_all: function () {

//全选与反全选

var that = this;

var arr2 = [];

for (let i = 0; i < that.data.orderlist.length; i++) {

that.data.orderlist[i].checked = (!that.data.select_all)

if (that.data.orderlist[i].checked) {

arr2.push(that.data.orderlist[i].id)

}

}

console.log(arr2)

that.setData({

orderlist: that.data.orderlist,

select_all: (!that.data.select_all),

middlearr: arr2

})

},

<checkbox-group >

<checkbox wx:if=”{{col0}}” bindtap=’select’ data-index=”{{index}}” data-id=”{{item.id}}” value=”{{item.id}}” checked=”{{item.checked}}”/>

</checkbox-group>

<button class=’reg’ bindtap=’select_all’>全选/取消</button>

js—————

data: {

select_all: false,

orderlist: [{ code: “111”, text: “text1”, typ: “type1”,checked:false },

{ code: “021”, text: “text2”, typ: “type2”,checked:false },

{ code: “111”, text: “text1”, typ: “type3”,checked:false }]

}