JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://github.com/SteveSanderson/knockout/raw/master/build/output/knockout-latest.debug.js"></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.templates/beta1/jquery.tmpl.js"></script>
<table id="table1" cellspacing="0" cellpadding="0" border="0">
    <tr>
        <th style="width:150px">Product</th>
        <th>Price ($)</th>
        <th>Quantity</th>
        <th>Amount ($)</th>
    </tr>

    <tbody data-bind='template: {name: "orderTemplate", foreach: orders}'></tbody>
</table>

<script type="text/html" id="orderTemplate">
    <tr>
        <td data-bind="text: product">${product}</td>
        <td class="editable number" data-bind="dataCell: price"></td>
        <td class="editable number"data-bind="dataCell: quantity">${quantity}</td>
        <td class="number" data-bind="text: amount">${amount}</td>
    </tr>
</script>

CSS

table 
    {
        border: solid 1px #e8eef4;
        border-collapse: collapse;
    }
    
    table th
    {
        padding: 6px 5px;
        background-color: #e8eef4; 
        border: solid 1px #e8eef4;   
    }

    table td 
    {
        padding:0 3px 0 3px;
        margin: 0px;
        height: 20px;
        border: solid 1px #e8eef4;
    }

    td.number
    {
        width: 100px;
        text-align:right;
    }
    
    td.editable
    {
        background-color:#fff;
    }
    
    td.editable input
    {
        font-family: Verdana, Helvetica, Sans-Serif;
        text-align: right;
        width: 100%;
        height: 100%;
        border: 0;
    }
    
    td.editing
    {
        border: 2px solid Blue;
    }

JavaScript

$(function () {
    ko.bindingHandlers.dataCell = {

        init: function (element, valueAccessor) {
            ko.utils.registerEventHandler(element, "change", function () {
                var value = valueAccessor();
                value($(element).text());
            });
        },
        update: function (element, valueAccessor, allBindingsAccessor, viewModel) {
            var value = valueAccessor();
            $(element).text(value);
        }

    };

    var order = function (product, price, quantity) {
        this.product = product;
        this.price = ko.observable(price);
        this.quantity = ko.observable(quantity);
        this.amount = ko.dependentObservable(function () {
            return this.price() * this.quantity();
        }, this);
    }

    var ordersModel = function () {
        this.orders = ko.observableArray([]);
    }


    var viewModel = new ordersModel();
    viewModel.orders = ko.observableArray([
            new order("Gala Apple", 0.79, 150),
            new order("Naval Orange", 0.29, 500)
        ]);

    ko.applyBindings(viewModel);

    $(".editable").change();
});