JQuery.getJSON没有提醒json

Question

我目前在localhost中运行:

$.getJSON("http://localhost/call", function(json) {
  alert(json.something);
});

http://localhost/call返回{something:1},但没有任何警报.

Answer 1

{something:1}

但是,它不是有效的JSON字符串

{"something":1}

是.

如果您更换电话

$.ajax({
    url: 'http://localhost/call',
    dataType: 'json',
    success: function(){},
    error: function(xhr, textStatus, errorThrown){
         //you should get a parse error and end up here
    }
});

你最终应该error回调.

在你的php文件中:

header('Cache-Control: no-cache, must-revalidate');
header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');
header('Content-type: application/json');

$arr = array('something' => 1, 'somethingelse' => 2);

echo json_encode($arr);