从 PHP 中检索 Javascript 中的 JSON 数组

我试图从 PHP 返回一个 json 编码的数组到 JS，我之前已经这样做过很多次了，但现在我遇到了一个奇怪的错误。我成功获取数据并且它在 chrome 中显示数组。但是，如果我指定了，我无法让它进入AJAX成功功能dataType: 'json'。如果我删除 dataType 并使用var parsed = JSON.parse(data);它将进入 success 函数，但会抛出意外的类型错误。请帮忙。

铬输出：

[
    {
        "fullURL": "https://lh6.googleusercontent.com/--ZKG_L-SA9c/UgqECNqP4II/AAAAAAAAA2I/i5nCa3CvKqM/s912/2010raptor_firstdrive002_opt.jpg",
        "thumbURL": "https://lh6.googleusercontent.com/--ZKG_L-SA9c/UgqECNqP4II/AAAAAAAAA2I/i5nCa3CvKqM/s128-c/2010raptor_firstdrive002_opt.jpg",
        "location": "",
        "caption": "",
        "tags": "",
        "program_instance_id": "a0Ji0000001pPO6EAM"
    },
    {
        "fullURL": "https://lh3.googleusercontent.com/-kyUg7_Rul90/UgqEDIu4DhI/AAAAAAAAA2Q/WF0BAEI7smo/s912/220px-Microchip_PIC24HJ32GP202.jpg",
        "thumbURL": "https://lh3.googleusercontent.com/-kyUg7_Rul90/UgqEDIu4DhI/AAAAAAAAA2Q/WF0BAEI7smo/s128-c/220px-Microchip_PIC24HJ32GP202.jpg",
        "location": "",
        "caption": "",
        "tags": "",
        "program_instance_id": "a0Ji0000001pPO6EAM"
    }
]

PHP

$arr = array();
foreach($photoURLS as $photo)
{
$arr[] = $photo;
}

}
echo json_encode($arr);

JS

$.ajax
({
    async: "false",
    type: 'POST',
    data: {action: 'var1', albumName: 'var2'},
    dataType: 'json',
    url: '/controller/function',
        success: function(data) 
        {
        //alert($.isArray(data));
        $.each(parsed, function(i, index) {
        alert(index.fullURL);
        });
        }
 });

所以我重新编写了代码，认为这个解决方案可能适合你。

$.ajax({
  async: "false",
  type: 'POST',
  data: {
    action: 'var1',
    albumName: 'var2'
  },
  dataType: 'json',
  url: '/controller/function',
  success: function(data) {
    $.each(data, function(index, element) {
      console.log(index);
      console.log(element.fullURL);
      console.log(element);
    });
  }
});

我无法测试 ajax 事件，但是我已经测试了您为每个循环提供的 json，它似乎可以工作。小提琴链接 http://jsfiddle.net/GBXSw/

var data = [{
    "caption": "",
        "fullURL": "https://lh6.googleusercontent.com/--ZKG_L-SA9c/UgqECNqP4II/AAAAAAAAA2I/i5nCa3CvKqM/s912/2010raptor_firstdrive002_opt.jpg",
        "location": "",
        "program_instance_id": "a0Ji0000001pPO6EAM",
        "tags": "",
        "thumbURL": "https://lh6.googleusercontent.com/--ZKG_L-SA9c/UgqECNqP4II/AAAAAAAAA2I/i5nCa3CvKqM/s128-c/2010raptor_firstdrive002_opt.jpg"
}, {
    "caption": "",
        "fullURL": "https://lh3.googleusercontent.com/-kyUg7_Rul90/UgqEDIu4DhI/AAAAAAAAA2Q/WF0BAEI7smo/s912/220px-Microchip_PIC24HJ32GP202.jpg",
        "location": "",
        "program_instance_id": "a0Ji0000001pPO6EAM",
        "tags": "",
        "thumbURL": "https://lh3.googleusercontent.com/-kyUg7_Rul90/UgqEDIu4DhI/AAAAAAAAA2Q/WF0BAEI7smo/s128-c/220px-Microchip_PIC24HJ32GP202.jpg"
}];

$.each(data, function (index, element) {
    console.log(index);
    console.log(element.fullURL);
});

另外一个好消息是，您的 json 100% 有效，因此传回的内容是正确的。希望这可以帮助