Question

我是JSON的新人，我真的不知道如何从内心对象中获取价值。现在我需要得到＆＃34;描述＆＃34;来自JSON对象响应的值。

JSON数据：

{"Fault":{"faultcode":"Client", "faultstring":"An exception has been raised as a result of client data.", "detail":{"Errors":{"ErrorDetail":{"Severity":"Hard", "PrimaryErrorCode":{"Code":"111285", "Description":"The postal code 95472 is invalid for FL United States."}}}}}}

http://www.jsoneditoronline.org/?id=2ce7ac5f329bd18f06000788ba7946dc

期待结果：

邮政编码95472对FL美国无效。

示例代码：

       success    : function(response) 
        {                       
            //alert("response="+response);         
alert("Description="+Fault.detail.Errors.ErrorDetail.PrimaryErrorCode.Description);    
        }

Answer 1

可以使用JSON.parse()方法解析JSON字符串，并使用String#match方法从字符串中获取数字。

＆＃13;

var json = '{"Fault":{"faultcode":"Client", "faultstring":"An exception has been raised as a result of client data.", "detail":{"Errors":{"ErrorDetail":{"Severity":"Hard", "PrimaryErrorCode":{"Code":"111285", "Description":"The postal code 95472 is invalid for FL United States."}}}}}}'

console.log("Description=" + JSON.parse(json).Fault.detail.Errors.ErrorDetail.PrimaryErrorCode.Description.match(/\d+/)[0]);

＆＃13;

如果你有一个有效的js对象（可能已被解析），则无需再次解析它。

＆＃13;

var obj = {"Fault":{"faultcode":"Client", "faultstring":"An exception has been raised as a result of client data.", "detail":{"Errors":{"ErrorDetail":{"Severity":"Hard", "PrimaryErrorCode":{"Code":"111285", "Description":"The postal code 95472 is invalid for FL United States."}}}}}};

console.log("Description=" + obj.Fault.detail.Errors.ErrorDetail.PrimaryErrorCode.Description.match(/\d+/)[0]);

＆＃13;

如何从JSON对象获取值？

1 个答案: