Question

我的API返回JSON值，如

[{"UserName":"xxx","Rolename":"yyy"}]

我需要Username和RoleName值，我试过JSON.parse，但是它返回[Object Object]请提前帮助我

Answer 1

请考虑以下事项：

＆＃13;

    var str = '[{"UserName":"xxx","Rolename":"yyy"}]'; // your response in a string
    var parsed = JSON.parse(str); // an *array* that contains the user
    var user = parsed[0];         // a simple user
    console.log(user.UserName);   // you'll get xxx
    console.log(user.Rolename);   // you'll get yyy

＆＃13;

Answer 2

你有array。然后需要首先获得0th元素

这将有效

＆＃13;

let unps =  JSON.parse('[{"UserName":"xxx","Rolename":"yyy"}]')[0]
console.log(unps.UserName, unps.Rolename);

＆＃13;

Answer 3

如果您的数据是字符串，那么您需要使用JSON.parse()解析它，否则您不需要，只需按原样访问它。

// if data is not in string format
const data = [{"UserName":"xxx","Rolename":"yyy"}];

const username = data[0].UserName
const rolename = data[0].Rolename

console.log(username)
console.log(rolename)

// if data is in string format
const strData = JSON.parse('[{"UserName":"xxx","Rolename":"yyy"}]');

const Username = data[0].UserName
const Rolename = data[0].Rolename

console.log(Username)
console.log(Rolename)

JSON.parse返回[Object Object]而不是value

3 个答案: