Using jQuery to select text and input values based on closest parameters.

CodePen example.

closest() will get the first element matching by traversing up, whilst find() will descend until the match is found.

So to find the card title we want to go right back up to the top of the card element tree and then search back down for the item-text class.

This method is similar to get an input value, but instead you want to only go as high as the current row. Then get the input’s value with val() on the id of the input.

The jQuery:

$(document).ready(function () {
    $(".buy-btn").click(function () {
        let item = $(this).closest('.card').find('.item-text').text();
        let size_text = $(this).closest('.row').find('.size-text').text();
        let size = $(this).closest('.row').find('#size').val();
        let price = $(this).closest('.row').find('#price').val();
        alert(item + ' ' + size_text + ' ' + size + ' ' + price);
    });
});

The HTML:

<div class="container">
    <div class="card">
        <div class="card-header">
            <h1 class="item-text">Cashews</h1>
        </div>
        <div class="card-body">
            <form>
                <div class="row">
                    <h4 class="size-text mt-2">Small</h4>
                    <div class="col-4">
                        <label for="size">Size</label>
                        <input type="text" class="form-control" id="size" placeholder="" value="250 Grams" disabled>
                    </div>
                    <div class="col-4">
                        <label for="price">Price $</label>
                        <input type="number" class="form-control" id="price" placeholder="" value="2.00" disabled>
                    </div>
                    <div class="col-4 mt-4">
                        <button type="button" class="btn btn-success btn-sm buy-btn">Buy</button>
                    </div>
                </div>
                <div class="row">
                    <h4 class="size-text mt-2">Medium</h4>
                    <div class="col-4">
                        <label for="size">Size</label>
                        <input type="text" class="form-control" id="size" placeholder="" value="500 Grams" disabled>
                    </div>
                    <div class="col-4">
                        <label for="price">Price $</label>
                        <input type="number" class="form-control" id="price" placeholder="" value="4.00" disabled>
                    </div>
                    <div class="col-4 mt-4">
                        <button type="button" class="btn btn-success btn-sm buy-btn">Buy</button>
                    </div>
                </div>
                <div class="row">
                    <h4 class="size-text mt-2">Large</h4>
                    <div class="col-4">
                        <label for="size">Size</label>
                        <input type="text" class="form-control" id="size" placeholder="" value="1 Kilogram" disabled>
                    </div>
                    <div class="col-4">
                        <label for="price">Price $</label>
                        <input type="number" class="form-control" id="price" placeholder="" value="7.00" disabled>
                    </div>
                    <div class="col-4 mt-4">
                        <button type="button" class="btn btn-success btn-sm buy-btn">Buy</button>
                    </div>
                </div>
            </form>
        </div>
    </div>
</div>