如何从AJAX响应中选择变量

Question

I have the following response from an AJAX request (as per Chrome console):

`XMLHttpRequest {
statusText: "Not Found", 
status: 404, 
responseURL: "XXX", 
response: "{"apiVersion":"2.1","error":{"code":404,"message":…dException","internalReason":"User not found"}]}}", responseType: ""…`}

How can I select both the value of statusText and the internalReason ?

When I try to set var msg = response.data.statusText; I get Uncaught TypeError: Cannot read property 'statusText' of undefined

Edit: Here's the code in context:

$.ajax({
    type: "GET",
    url: yt_url,
    dataType:"json",

    success: function(response)
    {
    // code
    }
    error: function(response)
    {
    handleError(response);
    }
 });


function handleError(response) {
    var msg = response.data.statusText;
    $('#status').html('An error occurred:' + msg);
}

Answer 1

You have the data in a string. If you want to access it like an object, then you have to convert it into one.

You need to find, or write, a parser for whatever data format the data is in.

It looks like it is JSON, so you can use JSON.parse(string)

Answer 2

如果您的json是有效的对象，那么您应该像这样访问：

var msg = response.statusText // not response.data.statusText as there is not key as data