我有一個問題，我想使用 ajax 從 mysql 獲取數據并將其顯示在一個下拉列表中（選擇標簽）。我的問題是如何將數據發送到 jQuery？AJAX ja_drop.php$query = "SELECT list_id,link,title FROM tbl_list ORDER BY title ASC;";    $result = mysqli_query($dblink, $query);    if (mysqli_num_rows($result) > 0) {        // output data of each row        while($row = mysqli_fetch_assoc($result)) {            $results[] = $row;        }    }     print_r($results);jQuery 代碼$.post("ja_drop.php").done(function(obj) {    $("#ts56").text(obj);// i want a loop statments for show data detail but not work any loop here});當我將 recive 對象打印到我的 jQuery 代碼時，它顯示以下結果：[0] => Array (    [list_id] => 25    [link] => http://213.217.33.27/z_tree/znv3/test1.htm    [title] => Ab Madani Damavand (WL-Tehran-Tehran Tower)(10.234.159.59)(1395925)    )[1] => Array (    [list_id] => 35    [link] => http://213.217.33.27/z_tree/znv3/test1.htm    [title] => Ab Madani Damavand (WL-Tehran-Tehran Tower)(10.234.159.59)(1395925)    )[2] => Array (    [list_id] => 36    [link] => http://213.217.33.27/z_tree/znv3/test1.htm    [title] => Ab Madani Damavand (WL-Tehran-Tehran Tower)(10.234.159.59)(1395925)    )[3] => Array (    [list_id] => 37    [link] => http://213.217.33.27/z_tree/znv1/test1.htm    [title] => Ab Madani Damavand (WL-Tehran-Tehran Tower)(10.234.159.59)(1395925)    )如您所見，我上面的數組有 4 個索引，但是當我想打印數組長度時，顯示錯誤的數字$("#ts56").text(obj.length);  // show 902