求取json格式数据

{
    "isSuccess": true,
    "defaultModel": {
        "gatewayDO": {
            "changeLocationGateway": {
                "queryDelivery": true,
                "queryProm": false
            },
            "trade": {
                "addToBuyNow": {},
                "addToCart": {}
            }
        },
        "inventoryDO": {
            "icTotalQuantity": 15491,
            "skuQuantity": {
                "28744246609": {
                    "quantity": 3511,
                    "type": 1
                },
                "40879656828": {
                    "quantity": 4949,
                    "type": 1
                },
                "44153224272": {
                    "quantity": 0,
                    "type": 1
                }
            },
            "success": true,
            "totalQuantity": 15491,
            "type": 1
        },
        "itemPriceResultDO": {
            "areaId": 330100,
            "campaignInfo": null,
            "largeScalePromOfficial": false,
            "largeScalePromPeriod": -1,
            "largeScalePromUnOfficial": false,
            "largeScalePromUnderFiftyPOff": false,
            "priceInfo": {
                "25508689431": {
                    "areaSold": true,
                    "price": "33.00",
                    "promotionList": [
                        {
                            "add": null,
                            "amountRestriction": "",
                            "gift": null,
                            "limitProm": false,
                            "limitTime": null,
                            "price": "3.88",
                            "promText": null,
                            "promType": "normal",
                            "start": false,
                            "status": 2,
                            "type": "???￥????￥??",
                            "typeUrl": null
                        }
                    ],
                    "tagPrice": null,
                    "umpBigPromotionDisplayPrice": null
                },
                "25508689432": {
                    "areaSold": true,
                    "price": "33.00",
                    "promotionList": [
                        {
                            "add": null,
                            "amountRestriction": "",
                            "gift": null,
                            "limitProm": false,
                            "limitTime": null,
                            "price": "3.88",
                            "promText": null,
                            "promType": "normal",
                            "start": false,
                            "status": 2,
                            "type": "???￥????￥??",
                            "typeUrl": null
                        }
                    ],
                    "tagPrice": null,
                    "umpBigPromotionDisplayPrice": null
                },
                "25508689433": {
                    "areaSold": true,
                    "price": "33.00",
                    "promotionList": [
                        {
                            "add": null,
                            "amountRestriction": "",
                            "gift": null,
                            "limitProm": false,
                            "limitTime": null,
                            "price": "3.88",
                            "promText": null,
                            "promType": "normal",
                            "start": false,
                            "status": 2,
                            "type": "???￥????￥??",
                            "typeUrl": null
                        }
                    ],
                    "tagPrice": null,
                    "umpBigPromotionDisplayPrice": null
                },
                "25508689434": {
                    "areaSold": true,
                    "price": "33.00",
                    "promotionList": [
                        {
                            "add": null,
                            "amountRestriction": "",
                            "gift": null,
                            "limitProm": false,
                            "limitTime": null,
                            "price": "3.88",
                            "promText": null,
                            "promType": "normal",
                            "start": false,
                            "status": 2,
                            "type": "???￥????￥??",
                            "typeUrl": null
                        }
                    ],
                    "tagPrice": null,
                    "umpBigPromotionDisplayPrice": null
                },
                "25508689435": {
                    "areaSold": true,
                    "price": "33.00",
                    "promotionList": [
                        {
                            "add": null,
                            "amountRestriction": "",
                            "gift": null,
                            "limitProm": false,
                            "limitTime": null,
                            "price": "3.88",
                            "promText": null,
                            "promType": "normal",
                            "start": false,
                            "status": 2,
                            "type": "???￥????￥??",
                            "typeUrl": null
                        }
                    ],
                    "tagPrice": null,
                    "umpBigPromotionDisplayPrice": null
                },
                "28744246609": {
                    "areaSold": true,
                    "price": "33.00",
                    "promotionList": [
                        {
                            "add": null,
                            "amountRestriction": "",
                            "gift": null,
                            "limitProm": false,
                            "limitTime": null,
                            "price": "3.88",
                            "promText": null,
                            "promType": "normal",
                            "start": false,
                            "status": 2,
                            "type": "???￥????￥??",
                            "typeUrl": null
                        }
                    ],
                    "tagPrice": null,
                    "umpBigPromotionDisplayPrice": null
                },
                "40879656828": {
                    "areaSold": true,
                    "price": "33.00",
                    "promotionList": [
                        {
                            "add": null,
                            "amountRestriction": "",
                            "gift": null,
                            "limitProm": false,
                            "limitTime": null,
                            "price": "3.88",
                            "promText": null,
                            "promType": "normal",
                            "start": false,
                            "status": 2,
                            "type": "???￥????￥??",
                            "typeUrl": null
                        }
                    ],
                    "tagPrice": null,
                    "umpBigPromotionDisplayPrice": null
                },
                "44153224272": {
                    "areaSold": true,
                    "price": "33.00",
                    "promotionList": [
                        {
                            "add": null,
                            "amountRestriction": "",
                            "gift": null,
                            "limitProm": false,
                            "limitTime": null,
                            "price": "3.88",
                            "promText": null,
                            "promType": "normal",
                            "start": false,
                            "status": 2,
                            "type": "???￥????￥??",
                            "typeUrl": null
                        }
                    ],
                    "tagPrice": null,
                    "umpBigPromotionDisplayPrice": null
                }
            },
            "promType": null,
            "queryProm": false,
            "tmallShopProm": null,
            "umpBigPromotionItem": false,
            "wanrentuanInfo": null
        },
        "memberRightDO": {
            "activeName": null,
            "activityId": null,
            "activityType": 0,
            "level": 0,
            "postageFree": false,
            "shopMember": false,
            "success": false,
            "time": 0,
            "value": 0
        },
        "miscDO": {
            "bucketId": 0,
            "city": "???￥??",
            "cityId": 330100,
            "region": "??￥??￥??",
            "regionId": 330102,
            "sellCountDown": 0,
            "systemTime": "1378956678454"
        },
        "sellCountDO": {
            "cspuSellCountMap": {},
            "sellCount": 69897
        },
        "specialServiceList": [],
        "tradeResult": {
            "cartEnable": false,
            "cartType": 2,
            "miniTmallCartEnable": true,
            "param": null,
            "tradeDisableTypeEnum": null,
            "tradeEnable": true,
            "tradeType": null
        },
        "userInfoDO": {
            "juKeBuyerLogin": false,
            "loginCC": false,
            "loginUserType": "buyer",
            "nicker": null,
            "userId": 0
        }
    }
}在js中 取出PromotionList  中的price  和 sellCountDO中 的sellcount；