前端js/jq遍历获取复杂数据{countList[{"measBoxStorageList":[{dvcld:""}]},{}}

各路前端大神，现在遇到一个问题是,解析后台返回的数据：可以用each/for..in..等各种遍历；现在是想要获取到{countList[{"measBoxStorageList":[{"dvcld":"1","dataTypeCode":"03"}]},{},{},{}};格式中的dvcld、dataTypeCode等key值，将其value值渲染到页面中；js代码格式例子：
 var json ={
    "countList": [
        {
            "equipNum": "38",
            "equipType": "计量箱",
            "measBoxStorageList": [
                      //数组里面一个{}，代表一条数据，有几条数据，就在html页面中渲染几条数据；
                {
                           "dvcId": "",
                    "chgDesc": "01",
                    "dataTypeCode": "03",
                },
                {  
                            "dvcId": "232222222222222222",
                    "chgDesc": "01",
                    "dataTypeCode": "02",
                },   
                       {  
                            "dvcId": "232222222222222222",
                    "chgDesc": "01",
                    "dataTypeCode": "02",
                }    
            ]
        },
        {
            "equipNum": "0",
            "equipType": "计量柜",
            "measCubicleStorage": []
        },
        {
            "equipNum": "37",
            "equipType": "电能表",
            "meterStoragesList": [
                {
                    "accurAcyCode": "01",
                    "assetNo": "",
                    "chgDesc": "01",
                    "curStatusCode": "007",
                    "currentCode": "007",
                    "id": "5000366570",
                },
                {
                    "accurAcyCode": "01",
                    "assetNo": "",
                    "chgDesc": "01",
                    "curStatusCode": "001",
                    "currentCode": "001",
                    "id": "5002814821",
                }
            ]
        }
    ],
    "result": "1",
    "returnCode": "1000",
    "returnMSG": "接口调用成功"
}html：
<div id="contentUl1">
                <ul class="content_ulBox">
                    <li class="">
                        <span class="fl">电能表标识</span>
                        <span class="fr" id="id" style="color:red"></span>
                    </li>
                    <li class="">
                        <span class="fl">电压</span>
                        <span class="fr">3*380/220v</span>
                    </li>
                    <li class="">
                        <span class="fl">变更类型</span>
                        <span class="fr">变更</span>
                    </li>
                </ul>
                <ul class="content_ulBox">
                    <li class="">
                        <span class="fl">电能表标识</span>
                        <span class="fr" id="id" style="color:red"></span>
                    </li>
                    <li class="">
                        <span class="fl">电压</span>
                        <span class="fr">3*380/220v</span>
                    </li>
                    <li class="">
                        <span class="fl">变更类型</span>
                        <span class="fr">变更</span>
                    </li>
                </ul>
            </div>
希望走过路过的各路大神指教！！！！