修复购物车加减商品重复的bug

app/code/Magento/Checkout/view/frontend/templates/cart/form.phtml

@@ -79,5 +79,32 @@
         <input type="hidden" value="" id="update_cart_action_container" data-cart-item-update=""/>
     </div>
 </form>
+<script>
+require(['jquery'], function ($) {
+        $('.add-qty').click(function(){
+            var input = $(this).prev().find('.input-text');
+
+            if (input.val()) {
+                var current = parseInt(input.val());
+                input.val(current + 1);
+                // submit
+                $("#form-validate").submit();
+            } else {
+                return false;
+            }
+        });
+        $('.lower-qty').click(function(){
+        var input = $(this).next().find('.input-text');
+        if (input.val() > 1) {
+            var current = parseInt(input.val());
+            input.val(current - 1);
+            // submit
+            $("#form-validate").submit();
+        } else {
+            return false;
+        }
+    });
+});
+</script>
 <?= $block->getChildHtml('checkout.cart.order.actions') ?>
 <?= $block->getChildHtml('shopping.cart.table.after') ?>

app/design/frontend/Joshine/breeze/Magento_Checkout/templates/cart/item/default.phtml

@@ -139,30 +139,4 @@ $canApplyMsrp = $helper->isShowBeforeOrderConfirm($product) && $helper->isMinima
         </td>
     </tr>
 </tbody>
-<script>
-    require(['jquery'], function ($) {
-        $('.add-qty').click(function(){
-            var input = $(this).prev().find('.input-text');
 
-            if (input.val()) {
-                var current = parseInt(input.val());
-                input.val(current + 1);
-                // submit
-                $("#form-validate").submit();
-            } else {
-                return false;
-            }
-        });
-        $('.lower-qty').click(function(){
-            var input = $(this).next().find('.input-text');
-            if (input.val() > 1) {
-                var current = parseInt(input.val());
-                input.val(current - 1);
-                // submit
-                $("#form-validate").submit();
-            } else {
-                return false;
-            }
-        });
-    });
-</script>