小编Aru*_*ick的帖子

我有这样的 json 数据

{
  "name":"John",
  "age":30,
  "cars":"BMW"
},
{
  "name":"Micheal",
  "age":30,
  "cars":"Ford"
},
{
  "name":"Andy",
  "age":29,
  "cars":"Ford"
}

我只想在这样的数组中获得汽车的独特价值

cars = ["BMW, Ford"];