yii2 dropDownList當從所有索引總是得到值總是晚一步

Question

我使用yii2動態窗體wbraganca和動態形式我使用kartik/select2。這是我的視圖代碼：

<div class="col-sm-8 col-md-3">      
    <?= $form->field($detail, "[{$i}]item_id")->widget(Select2::className(), [ 
     'data' => ArrayHelper::map(Item::find()->all(), 'id', 'name'), 
     'language' => 'en', 
     'options' => ['placeholder' => 'Select a item ...', 'onchange' => 'getItemPrice($(this))'], 
     'pluginOptions' => [ 
      'allowClear' => true,        
     ], 
    ]); 
?> 
</div> 
<div class="col-sm-4 col-md-2"> 
    <?= $form->field($detail, "[{$i}]qty")->widget(MaskedInput::className(), 
    [ 
     'clientOptions' => [ 
      'alias' => 'numeric', 
      'groupSeparator' => ',', 
      'digits' => 0, 
      'autoGroup' => true, 
      'removeMaskOnSubmit' => true, 
      'rightAlign' => false,         
     ], 
     'options' => [ 
      'class' => 'form-control', 
      'onchange' => 'calculateSubtotal($(this))',      
     ]        
    ]) ?> 
    </div> 
    <div class="col-sm-4 col-md-2"> 
     <?= $form->field($detail, "[{$i}]price")->widget(MaskedInput::className(), 
     [ 
      'clientOptions' => [ 
       'alias' => 'numeric', 
       'groupSeparator' => ',', 
       'digits' => 0, 
       'autoGroup' => true, 
       'removeMaskOnSubmit' => true, 
       'rightAlign' => false,        
      ], 
      'options' => [ 
       'class' => 'form-control', 
       'onchange' => 'calculateSubtotal($(this))',         
      ] 
    ]) ?> 
    </div> 
     <div class="col-sm-4 col-md-2"> 
      <?= $form->field($detail, "[{$i}]total")->widget(MaskedInput::className(), 
       [ 
        'clientOptions' => [ 
         'alias' => 'numeric', 
         'groupSeparator' => ',', 
         'digits' => 0, 
         'autoGroup' => true, 
         'removeMaskOnSubmit' => true, 
         'rightAlign' => false, 
        ] 
       ]) ?> 
    </div> 

，這是我的JavaScript代碼

function getItemPrice(item){ 
    var index = item.attr("id").replace(/[^0-9.]/g, ""); 
    var item_id = $('#purchaseorderdetail-'+ index + "-item_id").val(); 
    $.get('../item/get-price', {id : item_id}, function(data){ 
     $('#purchaseorderdetail-' + index + '-price').val(data); 
     $('#purchaseorderdetail-' + index + '-qty').val(1); 
     $('#purchaseorderdetail-' + index + '-total').val(data); 
    }); 
    calculateTotal(Number(index)+1); 
} 

function calculateSubtotal(item){ 
    var index = item.attr("id").replace(/[^0-9.]/g, ""); 
    var qty = $('#purchaseorderdetail-' + index + '-qty').val(); 
    qty = qty == "" ? 0 : Number(qty.split(",").join("")); 
    var price = $('#purchaseorderdetail-' + index + '-price').val(); 
    price = price == "" ? 0 : Number(price.split(",").join("")); 
    $('#purchaseorderdetail-' + index + '-total').val(qty * price); 

    calculateTotal(Number(index)+1); 
} 

function calculateTotal(index){  
    var total = 0; 
    for(i=0; i< index; i++){ 
     var subtotal = $('#purchaseorderdetail-' + i + '-total').val();   
     subtotal = subtotal == "" ? 0 : Number(subtotal.split(",").join("")); 
     alert(subtotal); 
     total = total + subtotal; 
    } 
    $('#purchaseorder-total').val(total); 
} 

當我選擇第一項（價格150000和qty 1），函數計算總總是給出結果0，然後我添加第二個項目（價格爲370,000和1），結果總數= 150,000。當我將第二件物品換成價格爲55,000的另一件物品時，總計520,000件。

我錯過了什麼？請指教。 謝謝

Answer 1

我已經找到了此anwser通過將代碼calculateTotal(Number(index)+1);在功能getItemPrice(item)中移入大括號$.get。 和現在當我刪除第二項，如何再次calculateTotal？

Answer 2

已經找到了我需要的東西。 只需添加這些代碼即可重新計算

jQuery(".dynamicform_wrapper").on("afterDelete", function(e) { 
    jQuery(".dynamicform_wrapper .remove-item").each(function(i) {     
     calculateTotal(i+1); 
    }); 
});