Unexpected token o in JSON at position 1 JSON 转化

讲这个问题之前先普及一下JSON.parse()和JSON.stringify()方面的知识:

有时候后端转给前端是字符串的json,就要转化一下如果是一个对象JSON.parse()

let data =  {"name":"xiaoming","age":"18"}
JSON.parse(data);

如果是是数组:JSON.stringify()

{"showIndex":"2","supportTrainingGoalDetailIdArray":["79e06500ab144f59bca18a5ff777e84b","252b3f9bf2c24683ba49bf9a363006ef","c053c4701b85428a88905bf0598c3cb8"],"content":"毕业要求2","standardDetailId":"2","supportRate":0}