JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
    <div class="row">
        <table id="mytable" class="table">
            <thead>
                <tr>
                    <th>Item ID</th>
                    <th>Item Name</th>
                    <th>Item Price</th>
                </tr>
            </thead>
            <tbody>
                <tr>
                    <td>1</td>
                    <td>Item 1</td>
                    <td>$99</td>
                </tr>
                <tr>
                    <td>2</td>
                    <td>Item 2</td>
                    <td>$200</td>
                </tr>
            </tbody>
        </table>
    </div>
</div>

JavaScript

$("#mytable tr").each(function() {
    var val = $("td", this)[3].text().substr(1) * 1;
    if (val < 100) 
        $(this).addClass("warning");
});