在我的例子中如何从 Json Stringify 中读取值？

Question

我验证用户登录后，如果失败会显示以下错误信息

jquery

console.log('Full error  = ' + JSON.stringify(showError));
console.log('test 1 =' + showError.responseText);

错误信息

Full error  = {"readyState":4,"responseText":"{\"error\":\"invalid_grant\",\"error_description\":\"The user name or password is incorrect.\"}","responseJSON":{"error":"invalid_grant","error_description":"The user name or password is incorrect."},"status":400,"statusText":"Bad Request"}


test 1 ={"error":"invalid_grant","error_description":"The user name or password is incorrect."}

我只想显示 The user name or password is incorrect 消息

我已经检查过了 link

Answer 1

您必须解析 responseText 属性，因为它是 JSON 字符串。

console.log(JSON.parse(showError.responseText).error_description);

// or using bracket notation
console.log(JSON.parse(showError.responseText)['error_description']);

var showError = {"readyState":4,"responseText":"{\"error\":\"invalid_grant\",\"error_description\":\"The user name or password is incorrect.\"}","responseJSON":{"error":"invalid_grant","error_description":"The user name or password is incorrect."},"status":400,"statusText":"Bad Request"} ;

console.log(JSON.parse(showError.responseText).error_description);

Answer 2

您可以使用 JSON.parse 方法来解析字符串中的 json 数据 format.It 将 return 一个 json object.In 您的情况。

var response = JSON.stringify('{"readyState":4,"responseText":"{\"error\":\"invalid_grant\",\"error_description\":\"The user name or password is incorrect.\"}","responseJSON":{"error":"invalid_grant","error_description":"The user name or password is incorrect."},"status":400,"statusText":"Bad Request"}
')
var error_message = response.responseText.error_description

error_message 变量包含你的错误信息

在我的例子中如何从 Json Stringify 中读取值？

How to read the value from Json Stringify in my case?

jquery

json

stringify