// 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 }]}