razor,asp.net-mvc-5 , How to pass a value for input type=“number” to JS in Razor View


How to pass a value for input type=“number” to JS in Razor View

Question:

Tag: razor,asp.net-mvc-5

I have a view, here's a fragment of it:

@foreach (var item in Model.Items.ToList())
{
    <tr>
        <td>
            <input type="checkbox" name="productIdCheckbox" value="@item.sLabel">
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.sLabel)    
        </td>
        <td>    
            @Html.DisplayFor(modelItem => item.Text)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.OEMCode)
        </td>
        <td>
            <input type="number" name="qty" id="qty" min="1" max="1000" step="1" value="@item.Quantity" />
        </td>
        <td>
            <input type="submit" data-url='@Url.Action("AddToCart", "Cart", new { id = item.Id, qty = // I DON'T KNOW HOW TO PASS IT HERE // })' class="addProductToCartBtn btn btn-success" value="Add to cart" />
        </td>
    </tr>
}

This code invoke AddToCart method in CartController:

$('.addProductToCartBtn').click(function (event) {
    var url = $(this).data('url');
    $.ajax({
        url: url,
        type: 'GET',
        success: function (resultFrom_CartSummaryLine) {
            // some logic here..
        }
    });
});

But I can't pass to this method the value for qty input. How can I do it?

To be clear this is a method from CartController in which I want to pass a value for qty parameter:

public PartialViewResult AddToCart(CartModel cart, int id, int qty)
{
    GetItemListProcedure_Result item = _itemRepository.GetItemByItemId(id).FirstOrDefault();
    if (item != null)
    {
        cart.AddItem(item, qty);
    }
    return PartialView("_CartSummaryLine", cart);
}

Answer:

You could have made the name="qty" number input using an HTML helper too. Something like this:

@Html.TextBoxFor(modelItem => modelItem.Quantity, new {type = "number"})

Then you should be able to retrieve the value just like any other input element.

Is that what you're asking for? Or do you specifically need to retrieve this value via JS?

Edited:

Within your JS method, you can retrieve all of your values. Also, make it a POST ajax call so that you don't have to get the URL within the data-url. You can just add the parameters within the ajax call. Also add a [HttpPost] attribute to above your controller action method.

$('.addProductToCartBtn').click(function (event) {
        var url = $(this).data('url');
        var idVal = $('[name="productIdCheckbox"]').val();
        var qtyVal = $('#qty').val()
        var cart = {
            sLabel: $('#...'), //whatever your selector for this is
            Text: $('#...'),
            OEMcode: $('#...') 
        };
        $.ajax({
            url: url,
            type: 'POST',
            data: {cart: cart, id: idVal, qty: qtyVal},
            success: function (resultFrom_CartSummaryLine) {
                // some logic here..
            }
        });
    });
});


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