Modify the quantity of a product in the shopping cart
SDK apifmDevelopment reference
```javascript
WXAPI.jdvopCartModifyNumber(token, key, number)
```
+ token user login credentials
+ key The key field of the product record returned by the shopping cart
+ number number of items
```json
{
"code": 0,
"msg": "success",
"data": {
"number": 3,
"score": 0,
"price": 61.95,
"items": [
{
"key": "209951",
"goodsId": 209951,
"number": 3,
"pic": "http://img13.360buyimg.com/n12/jfs/t1/184551/15/6470/204477/60b23a8dEa4755c7a/b533ee70a9093637.jpg",
"name": "Vinda roll paper blue classic 4 layers 140g*10 rolls toilet paper paper towel",
"price": 20.65,
"selected": true
}
]
}
}
```