Php 为什么我来自CodeIgniter的JSON响应在JavaScript中不可读？

我使用CodeIgniter控制器将数据存储在“响应”中，该控制器：

{
  "ok": false,
  "messages": {
    "cgusrnm": "<p class=\"text-danger\">The Full Name field is required.<\/p>",
    "cgnnm": "<p class=\"text-danger\">The Nick Name field is required.<\/p>",
    "cgeml": "<p class=\"text-danger\">The Email Address field is required.<\/p>",
    "cgunm": "<p class=\"text-danger\">The User Name field is required.<\/p>",
    "cgpsd": "<p class=\"text-danger\">The Password field is required.<\/p>",
    "ccgpsd": "<p class=\"text-danger\">The Confirm Password field is required.<\/p>",
    "cgcnm": "<p class=\"text-danger\">The Company Name field is required.<\/p>",
    "cgadr": "<p class=\"text-danger\">The User Address field is required.<\/p>",
    "cgct": "<p class=\"text-danger\">The City field is required.<\/p>",
    "cgcnt": "<p class=\"text-danger\">The Country field is required.<\/p>",
    "cgzn": "<p class=\"text-danger\">The State field is required.<\/p>",
    "cgzc": "<p class=\"text-danger\">The Zip Code field is required.<\/p>",
    "cgpn": "<p class=\"text-danger\">The Phone Number field is required.<\/p>",
    "cgsn": "<p class=\"text-danger\">The Skype Name field is required.<\/p>",
    "pm": "<p class=\"text-danger\">The Payment Method field is required.<\/p>",
    "cgpeml": "<p class=\"text-danger\">The Email Address field is required.<\/p>"
  }
}

---

消息不是数组，而是对象。JSON数组看起来像{message:[“a”，“b”]}

即使数据类型是JSON，

响应

变量的类型仍然是字符串。尝试添加

response=JSON.parse（response）

将字符串转换为JavaScript对象。

可能是

response.data.ok

console。记录
response
的值，并调查其结构。我浏览了本教程。我不是在看YouTube教程来回答这个问题。使用
console.log
查看
response
的值。相应地调整代码。我不清楚。为什么不能使用我的代码？我非常感谢你，因为你把它叫做
datatype
，而不是
datatype
<代码>数据类型

不起任何作用。您可以去掉

JSON.parse

并将其更改为

dataType

。

$('#form_user').submit(function(e) {
  e.preventDefault();

  var me = $(this);

  $.ajax({
    url: me.attr('action'),
    type: 'post',
    data: me.serialize(),
    datatype: 'json',
    success: function(response) {
      if (response.ok == true) {
        alert('response');
      } else {
        $.each(response.messages, function(key, value) {
          var element = $('#' + key);
          element.after(value);
        });
      }
    }
  });
});