8

我正在使用 AJAX 从 PHP 文件中获取 JSON 编码的数组，但在 JavaScript 中我需要将其用作数组，如何在 Javascript 中创建数组？

我对 PHP 文件的 AJAX 调用：

  $.ajax({
    type:"POST",
    url:"ajaxfetch.php",
    success:function(result){
            alert(result);
             }
    });

在 PHP 文件中创建的数组：

Array
(
    [0] => Array
        (
            [id] => 4
            [deviceID] => xyz123
            [latitude] =>  -33.80010128657071
            [longitude] => 151.28747820854187
            [altitude] => 34.78788787
            [createdDate] => 2013-08-15 23:00:00
            [delete] => 0
        )

    [1] => Array
        (
            [id] => 5
            [deviceID] => jdkfhjskh344
            [latitude] => -33.950198
            [longitude] => 151.259302
            [altitude] => 76.44455
            [createdDate] => 2013-08-15 21:50:42
            [delete] => 0
        )

    [2] => Array
        (
            [id] => 1
            [deviceID] => abc223
            [latitude] => -33.890542
            [longitude] => 151.274856
            [altitude] => 21.4454455
            [createdDate] => 2013-08-15 20:00:00
            [delete] => 0
        )

)

我在 PHP 中对这个数组进行了 json 编码，但 AJAX 检索了它并以字符串的形式输出。

ABOVE ARRAY json 编码如下所示：

$data = array();
$data = $locate_obj->getAllDeviceLocation();


echo json_encode($data);

json_encode 的输出

[{"id":"4","deviceID":"xyz123","latitude":" -33.80010128657071","longitude":"151.28747820854187","altitude":"34.78788787","createdDate":"2013-08-15 23:00:00","delete":"0"},{"id":"5","deviceID":"jdkfhjskh344","latitude":"-33.950198","longitude":"151.259302","altitude":"76.44455","createdDate":"2013-08-15 21:50:42","delete":"0"},{"id":"1","deviceID":"abc223","latitude":"-33.890542","longitude":"151.274856","altitude":"21.4454455","createdDate":"2013-08-15 20:00:00","delete":"0"}]

我正在寻找可以在 Javascript 中使用我在 ajax 响应中收到的输出创建数组的方法，以便我可以想出一个格式数组：

var locations = [
      ['Bondi Beach', -33.890542, 151.274856, 4],
      ['Coogee Beach', -33.923036, 151.259052, 5],
      ['Cronulla Beach', -34.028249, 151.157507, 3],
      ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
      ['Maroubra Beach', -33.950198, 151.259302, 1]
    ];
4

4 回答 4

11

这个问题有三个解决方案：

如果您想在客户端修改结构，请查看Access / process (nested) objects、arrays 或 JSON。

于 2013-08-17T08:24:59.907 回答
4 
http://api.jquery.com/jQuery.getJSON/

$.getJSON('ajaxfetch.php', function(data) {
  var locations = []; 

  $.each(data, function(key, val) {
    locations[val.deviceID] = [];
    locations[val.deviceID].push(val.id);
    locations[val.deviceID].push(val.latitude);
    locations[val.deviceID].push(val.longitude);
  });
});

没有经过 100% 的测试，但它是正确的。不确定从哪里获得位置名称，因为它不在数组中，所以我使用了 deviceID。使用 getJSON 应该会让您的生活更轻松。

于 2013-08-17T08:29:33.990 回答
0

确保您的输出是有效的 JSON，然后dataType: "json"在您的 jQuery AJAX 请求中指定：

$.ajax({
    type: "POST",
    url: "ajaxfetch.php",
    dataType: "json",
    success: function (result) {
        console.log(result); //Now a JSON object
    }
});
于 2013-08-17T08:21:52.140 回答
-1 
var locations = [];
$.ajax({
    type: "POST",
    url: "ajaxfetch.php",
    dataType: "json",
    success: function (result) {
       result.forEach(function(loc) { locations.push(new Array(loc.deviceID, loc.latitude, loc.longitude, loc.id)) });
       // locations is now in desired format (except non-existent place name)
    }
});
于 2013-08-17T08:25:33.583 回答