在jquery ajax中賦值給數組完成函數問題

Question

我試圖將距離數據庫中位置的距離添加到名爲距離的數組中。看來我的數組在完成循環之前就被清空了，並且/或者循環的索引在每次循環完成之前都不會爲'x'重新賦值。你能看到我做錯了什麼嗎？我需要回撥功能嗎？

<?php if (isset($customer_id)) {?> 
         customer_id = <?=$customer_id?>; 
        <?php }?> 

        //var distances = new Array(); 

         $j.ajax({ 
          type: "POST", 
          url: "/ajax_calls/originDestinationAddress.php", 
          data: { 'vendorID': <?=$vendorId?>, 'customerID': customer_id} 
          }).done(function(data) { 
           var data= JSON.parse(data);  
           var destination = data[0].destination; 
           console.log ('destination is ' + destination); 

           var distances = []; 
           for(var x=0; x<data.length; x++){ 
           console.log('the array of distances for vendor with id ' + <?=$vendorId?>); 
            var origin = data[x].origination; 
            console.log('origin is ' + origin); 

            if(origin && destination){ 
             var service = new google.maps.DistanceMatrixService(); 
              service.getDistanceMatrix(
              { 
               origins: [origin], 
               destinations: [destination], 
               travelMode: google.maps.TravelMode.DRIVING, 
               unitSystem: google.maps.UnitSystem.IMPERIAL, 
               avoidHighways: false, 
               avoidTolls: false 
              }, function(response, status){ 
               if (status != google.maps.DistanceMatrixStatus.OK) { 
                console.log('Error was: ' + status); 
                } else { 
                var origins = response.originAddresses; 
                var destinations = response.destinationAddresses; 

                for (var i = 0; i < origins.length; i++) { 
                 var results = response.rows[i].elements; 
                 for (var j = 0; j < results.length; j++) { 
                 var miles = results[j].distance.text; 
                 var pieces = miles.split(" "); 

                  //$j('#'+ id + ' td.distanceDetail').text(pieces[0]); 
                  //$j('#'+ id + ' td.distanceDetail').append('<span> ' + pieces[1] + '</span>'); 
                  console.log('currently adding ' + pieces[0] + ' to distances array with key ' + x); 
                  distances[x]= pieces[0]; 
                 } 
                } 
                } 
              }); 
           }//end for length of data loop 
           console.log(distances); 
          } 


         });//end done function 

originDestinationAddress.php（接收所有正確的標題爲Chrome開發選中狀態，以便不應該是相關的）：

<?php 
error_reporting(E_ERROR | E_WARNING | E_PARSE | E_NOTICE); 
require_once('/connect.php'); 
require_once('/app/Mage.php'); 
umask(0); 
Mage::app(); 


$vendorID = $_POST['vendorID']; 
//$vendorID=13; 
$customerID = $_POST['customerID']; 
//$customerID=8; 


//Must convert ID to match Zak's program 
    $productModel = Mage::getModel('catalog/product'); 
    $attr = $productModel->getResource()->getAttribute("vendor"); 
    if ($attr->usesSource()) { 
     $vendorID= $attr->getSource()->getOptionText($vendorID); 
    } 



$customerData = Mage::getModel('customer/customer')->load($customerID); 
$customerSchool = addslashes($customerData->getSchool()); 
$pieces = explode("-", $customerSchool); 


//obtain origination 
     $sql = mysqli_query($con,'SELECT street_1, street_2, city, state, zipcode, zip4 FROM DTS_Mage_Staging.ven_ship_orig WHERE ven_id=' . $vendorID); 
     $i=0; 
     //echo 'SELECT street_1, street_2, city, state, zipcode, zip4 FROM DTS_Mage_Staging.ven_ship_orig WHERE ven_id=' . $vendorID; 
     while($row = mysqli_fetch_array($sql)){ 
      $addressString= $row['street_1'] . ', '; 
      if($row['street_2']!="" && $row['street_2']!="null") 
       $addressString.= $row['street_2'] . ", "; 
      $addressString.= $row['city'] . ", " . $row['state'] . " " . $row['zipcode']; 
      if($row['zip4']!="" && $row['zip4']!="null") 
       $addressString.= "-" . $row['zip4']; 
      $addressString.= ", USA"; 
      $echoArray[$i]['origination'] = $addressString; 
      $i++; 
     } 


     //while($row = mysqli_fetch_array($sql)){ 
      //$echoArray[$i]['origination']= $row['ship_city'] . "," . $row['ship_state']; 
      //$i++; 
     //} 

//obtain destination  
if ($pieces[0] == "District Purchaser"){ 
    $sql2 = mysqli_query($con,"SELECT mail_city,mail_state FROM dist_comp.districts WHERE agency_name='" . $pieces[1] . "'"); 
     $i=0; 
     while($row = mysqli_fetch_array($sql2)){ 
      $echoArray[$i]['destination']= $row['mail_city']. "," . $row['mail_state']; 
      $i++; 
     } 
}else{ 
    $sql2 = mysqli_query($con,"SELECT ship_city,ship_state FROM dist_comp.schools WHERE school_name='" . $customerSchool . "'"); 
     $i=0; 
     while($row = mysqli_fetch_array($sql2)){ 
      $echoArray[$i]['destination']= $row['ship_city']. "," . $row['ship_state']; 
      $i++; 
     } 

      $sql3 = mysqli_query($con,"SELECT city,state FROM dist_comp.private_schools WHERE school_name='" . $customerSchool . "'"); 
      $i=0; 
      while($row = mysqli_fetch_array($sql3)){ 
       $echoArray[$i]['destination']= $row['city'] . "," . $row['state']; 
       $i++; 
      } 
     //} 
} 
echo json_encode($echoArray); 

?> 

控制檯截圖

Answer 1

哇，這是很難讀！

看起來你已經打上大括號爲：

//end for length of data loop 

實際上是右括號到：

if(origin && destination){ 

直接位於後的大括號：

console.log(distances); 

是data.length循環的閉括號。

我想你想要做的是正確的.done（）回調的這樣結束前移動console.log(distances)

到行什麼：

 }//end for length of data loop 

    } 
    console.log(distances); 

});//end done function