Question

以下是来自ajax调用的错误回调函数。

error: function(xhr, status, error) {
    var responseObj = jQuery.parseJSON( xhr.responseText );
}

我将其发送到控制台：

console.log(responseObj.message);

返回此内容：

Object {Invalid or missing parameters: Object}
    Invalid or missing parameters: Object 
        email_already_in_use: "'Email' already in use"

如果我将响应字符串化为：

var responseMsg = responseObj.message;
if(typeof responseMsg =='object') {
    var respObj = JSON.stringify(responseMsg);
    console.log(respObj);
}

我明白了：

{"Invalid or missing parameters":{"email_already_in_use":"'Email' already in use"}}

如何向用户打印他们的电子邮件已被使用？

完整的回调函数：

error: function(xhr, status, error) {

    var responseObj = jQuery.parseJSON( xhr.responseText );
    var responseMsg = responseObj.message;

    if(typeof responseMsg =='object') {

        var respObj = JSON.stringify(responseMsg);
        console.log(respObj);

    } else {

        if(responseMsg ===false) {

            console.log('response false');

        } else {

            console.log('response something else');

        }
    }
      console.log(responseObj.message);
}

Answer 1

你可以这样做：

var errorMessages = responseObj.message["Invalid or missing parameters"];

for (var key in errorMessages) {
  if(errorMessages.hasOwnProperty(key)){
    console.log(errorMessages[key]);
  }
}

如果您有不同类型的消息（不仅是“参数无效或缺失”），您应该首先迭代消息数组：

var errorMessages = responseObj.message;
for (var errorType in errorMessages){
  if(errorMessages.hasOwnProperty(errorType)){
    console.log(errorType + ":");
    var specificErrorMsgs = errorMessages[errorType];
    for (var message in specificErrorMsgs) {
      if(specificErrorMsgs.hasOwnProperty(message)){
        console.log(specificErrorMsgs[message]);
      }
    }
  }
}

尝试打印来自对象

1 个答案: