1、我的data.json数据上传到了云存储上了。内容如下：

[{"id":"0","type":"a","location":"999","zt":"0101","jc":"认识测量工作","name":"下面是施工现场钩机在挖基坑，随着钩机不断开挖，测量人员使用仪器（水准仪）为了什么呢？","xx":["保证钩机安全","保证基坑开挖深度","保证工作人员安全"],"img":"https://7a68-zhb-0ecbc7-1258590126.tcb.qcloud.la/testimg/9990101.jpg?sign=91f28caa7891d35167bfd4d10e2930c3&t=1583927462","daan":["保证基坑开挖深度"],"fenshu":"1"},{"id":"1","type":"a","location":"999","zt":"0102","jc":"认识测量工作","name":"下图钢筋上有红色标记，测量人员使用的仪器（水准仪）及作用是","xx":["测量标高","经纬仪控制标高"],"img":"https://7a68-zhb-0ecbc7-1258590126.tcb.qcloud.la/testimg/9990102.jpg?sign=6b352a4261e59751dd9b9f82a07d18fd&t=1583927496","daan":["测量标高"],"fenshu":"1"}]

2、我经过代码下载下来之后读取的文件。

3、JSON.parse怎么变成能读出ss[0]？？？？之后可以使用ss.item 去循环呢？