Onchange event triggered by a previous onchange event

I'm using Bootstrap tabs, and on tab one, a user is to select their primary shipping location. I have an onchange event for when that primary shipping location is changed, it goes out, makes an ajax call, and returns the inventory each item at the location selected.

Now, what I'm trying to do, unsuccessfully, is when the user goes to Tab two, display something that says, "the primary shipping location contains "x" amount in their inventory.

Unfortunately, my program is only returning the last item inventory level, instead of both items.

Here is the jQuery code, which makes the ajax call, and displays the HTML on the page:

	//Show only matching durations on rental terms selection
	$('.primaryWarehouse').change(function() {
		window.console.log(depots);
		
		$('.curInventory').val();
		$('.accInv').empty();
		
		var location = $(".primaryWarehouse").val();
		var quote = $(".quote").val();
		var iteration = $(".iteration").val();
		var dataString = 'loc='+ location + '&quote='+ quote +'&iteration='+iteration+'&type=check_all_items'; 
	
		$.getJSON(systemURL + "includes/ajax/getInventory.php?" + dataString, function (data) {
			
			
		$(".itemWarehouses").val(location);
		$(".itemWarehouses").change(function() {
			$.each(data.item_inventory, function (key, v) {
				
				var current_product = $(".current_product").val();
				alert(current_product);
				
				if(current_product = v.product_id) {
					$('.current_loc_inv').html(v.location_inventory);
				}
			});
		});
	});
});

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Here is the Json returned from the ajax call: Its in an array called "item_inventory"

<pre>Array
(
    [0] => Array
        (
            [quote_line] => 67
            [item_id] => 133
            [product_id] => 1
            [location] => 10
            [location_inventory] => 4
        )

    [1] => Array
        (
            [quote_line] => 68
            [item_id] => 134
            [product_id] => 6
            [location] => 10
            [location_inventory] => 14
        )

)

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Finally, here is the PHP code I'm trying to append the matching inventory to:

foreach($new_line_array AS $key => $val) {
	if ($val['quote_line_id'] != $last_item) {
		echo '<input type="hidden" name="item_id[]" class="current_product" value = "'.$val['item_id'].'">';
		
		$text = '<strong>' . $val['original_qty'] . '  of the ' . $val['make_model']. ' products have been ordered.  Select the warehouse(s) below. The primary warehouse selected currently has <span class="current_loc_inv"></span> currently available.</strong>';
							
		echo '</table><br />';
		echo $text . '<br />';
		echo '<table class="table table-striped table-inverse table-bordered">';
	} 

	echo '<table class="table table-striped table-inverse table-bordered">';

	echo '<tr>
				<td>' . $val['quote_line_id'] . '</td>
				<td>
					<div class="form-group">
						<label class="col-sm-2"><span class="asterisk">*</span>Shipping Warehouse</label>
						<div class="col-sm-4">
							<select name="itemWarehouses" class="form-control itemWarehouses">
								<option value = "">Select a Shipping Location</option>';
									foreach(Location::fetch_all_locations() AS $locs) {
										echo '<option value = "'.$locs['branch'].'">'.$locs['branchname'].' ('.$locs['depotNum'].')</option>';
								}
								echo '
							</select>
						</div>
					</div>
				</td>
			</tr>';

	#echo '</table><br /><br />';
	$last_item = $val['quote_line_id'];
}

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Essentially what I'm trying to have happen is that when I initially set the primary warehouse on tab 1, it'll look at the item_id class in tab 2, look up the inventory for each item_id on the page, and append it to the sentence in the PHP code that contains, "currently has <span class="current_loc_inv"></span> currently available.</strong>';"