解码Javascript(jQuery)中的JSON数组(从PHP)

问题描述：

我首先编写JSON:

$arr = array ('a'=>1,'b'=>2,'c'=>3,'d'=>4,'e'=>5);
print json_encode(array(
    "array" => $arr
));

然后在jQuery中执行:

Then in the jQuery I do:

j.post("notifications.php", {}, function(data){

现在，这是我有点困惑的地方，就像我通常会做的那样:

Now this is where I'm a little confused, as I would normally do:

data.array

要获取数据，但是我不确定如何处理数组. data.array[1]无效.

To get the data, but I'm not sure how to handle the array. data.array[1] didn't work.

谢谢！

答

PHP的关联数组成为javascript中的对象(哈希).

PHP's associative arrays become objects (hashes) in javascript.

data.array.a === 1
data.array.b === 2
// etc

如果要枚举这些值

for ( var p in data.array )
{
  if ( data.array.hasOwnProperty( p ) )
  {
    alert( p + ' = ' + data.array[p] );
  }
}