这什么意思呀，不是蛮懂这个，求告知

{"duration":243827,"filesize":2969399,"musicId":191171,"filemd5":"65548decf10518bd674c13c798e6526e","version":2,"parts":["0,2969399"],"bitrate":96000,"md5":"63cf690754918a6a335bd0c2093f1a51"}

这应该是一个有关某个文件信息的字典，当然，也有可能是某个json文件里的内容
有时长，占用空间，比特率等参数

?json格式的数据?

json字符串
https://www.runoob.com/json/json-tutorial.html https://www.runoob.com/json/json-tutorial.html

这是个json

var x={"duration":243827,"filesize":2969399,"musicId":191171,"filemd5":"65548decf10518bd674c13c798e6526e","version":2,"parts":["0,2969399"],"bitrate":96000,"md5":"63cf690754918a6a335bd0c2093f1a51"}
// 使用方法
x.duration  // 243827
x.filesize    // 2969399
...