JSON中的關聯數組解碼

Question

我試圖根據數據庫中的信息更改元素列表的類。 我認為簡單的方法是通過一個數組。 我在php端構建數組如下。

 $setClassResult = array();
 while($row = mysql_fetch_array( $result ))
 {
 $setClassResult= array_push_assoc($setClassResult, $row['item_id'], $row['parent']);
 }  
 echo json_encode(array($setClassResult));
 break;

給了我......

 [{"830":"0","734":"830","733":"830","732":"830","735":"830","737":"830","736":"830","738":"830","739":"830","740":"830","741":"830","742":"830","872":"0","869":"872","868":"872","880":"872","964":"872"}]

解碼和更改我使用的元素.....

  $.each(data, function(key, val) {
        $("#recordsArray_"+key).toggleClass(val);   
        alert(key+" "+val);
  });

警報發生一次0[object,Object]這是因為我創建數組的方式？ 我注意到的第一件事是JSON周圍的[和] 。

Answer 1

無需添加額外數組，請嘗試：

echo json_encode($setClassResult);

Answer 2

您的結果是對象格式數組：

 [{"830":"0","734":"830","733":"830","732":"830","735":"830","737":"830","736":"830","738":"830","739":"830","740":"830","741":"830","742":"830","872":"0","869":"872","868":"872","880":"872","964":"872"}]

因此，當你進行迭代時，它首先遍歷數組並且鍵是0並且值是一個對象。所以，如果你稍后遍歷作為對象的值，你將得到它

或者作為soju，如果你不需要將它存儲在對象數組中但只有一個對象並迭代一次。