我如何使用 JS 从 JSON 中提取数据

Question

{ "errors":

          [

            { "value":"k@d.c",

              "msg":"Email is not valid",

              "param":"email",

              "location":"body"

            }

          ]

 }

我想从这个 json 对象中提取味精。我该怎么做呢？

Answer 1

const jsonContent = `{"errors":[{"value":"k@d.c","msg":"Email is not valid","param":"email","location":"body"}]}`;const jsObject = JSON.parse(jsonContent);const errorMessage = jsObject.errors[0].msg;这将导致：{    "errors":[       {          "value":"k@d.c",         "msg":"Email is not valid",         "param":"email",         "location":"body"      }   ]}[更新] 抱歉，没有看到您只要求 msg 属性。编辑了我的代码。

Answer 2

您可以使用JSON.parse(str)像这样var t = '{"errors":[{"value":"k@d.c","msg":"Email is not valid","param":"email","location":"body"}]}';var msg = JSON.parse(t)["errors"][0]["msg"];