我如何访问JSON数据？ [重复]

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                        <a href="/questions/11922383/how-can-i-access-and-process-nested-objects-arrays-or-json" dir="ltr">How can I access and process nested objects, arrays or JSON?</a>
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            <div class="grid--cell mb0 mt8">Closed <span title="2016-05-10 15:00:38Z" class="relativetime">3 years ago</span>.</div>
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i have created a dynamic array and then, i convert it to json object. The code is the follows:

$array_D1[]="";
$array_D2[]="";
$array_to_send[]="";

$array_D1[$CapaEnviar][] = $fila['test_name'];
$array_D2[]=$seleccio_content;
$array_D2[]=$id_capa;
$array_D2[]=$pagina;
$array_D2[]=$idtest;
$array_D2[]=$valor_org;
$array_D2[]=$valor_eval;
$array_D2[]=$valor_test;

$array_to_send=array('data1' => $array_D1, 'data2' => $array_D2);

echo json_encode($array_to_send,true);

This code is a AJAX response for an AJAX request. I don't know how i can access JSON data from jquery.

i need to acces the values from "data1" and "data2"

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I'm not sure what's hard about this. The others are right that you probably should add:

header('Content-type: application/json');

to your php file before your echo statement.

Assuming that you can access the php with a url, say, http://blah.com/test.php, you can...

$.ajax({
        method: 'post', //or 'get'
        url: 'http://blah.com/test.php'
})
.done(function(data) {
    console.dir(data.data1);
    console.dir(data.data2);
})
.fail(function(jqXHR, textStatus) {
    console.dir(jqXHR);
    console.dir(textStatus);
});

Obviously, you can replace the body of the callback with whatever processing you want.