这里doc我已经用mongoose查询过来了已经有了如下: { _id: 5abde50b0bbd63c05201e938, productImage: '1.jpg', salePrice: 200, productName: '小米音响', productId: '201710007' } if(doc){//但是我这两个属性没有加上 doc.productNum = "1"; doc.checked = "1";//但是我这两个属性没有加上 userdoc.cartList.push(doc); userdoc.save(function(err2,doc){ if(err2){ res.json({ status:'1', msg:err2.message }) }else{ res.json({ status:'0', msg:"", result:"成功" }) } });这是我的数据模型var mongoose = require('mongoose');var userSchema = new mongoose.Schema({"userId":String,"userName":String,"userPwd":String,"orderList":Array,"cartList":[{"productId":String,"productName":String,"salePrice":String,"productImage":String,"checked":String,"productNum":String}],"addressList":Array});module.exports = mongoose.model("us",userSchema);希望各位大师帮我解释下为什么
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