JSFiddle - React, Tailwind, and code Playground

by pphheerroonn

HTML

<table id="shopping-cart-table" class="cart-table data-table">
            <colgroup><col width="1">
            <col width="1">
            <col width="1">
            <col width="1">
            <col width="1">
            <col width="1">
            
                    </colgroup><thead>
                <tr class="first last">
                    <th rowspan="1"><span class="nobr">Product</span></th>

                    <th rowspan="1">&nbsp;</th>

                    <th class="a-center cart-price-head" colspan="1">
<!--                            <div class="cart-price-placeholder">-->
                            <span class="nobr">Price</span>
<!--                            </div>-->
                    </th>

                    <th rowspan="1" class="a-center">
                        Qty
                        
                    </th>

                    <th class="a-center cart-total-head" colspan="1">
<!--                            <div class="cart-total-placeholder">-->
                            Subtotal<!--                            </div>-->
                    </th>

                    <th class="a-center" rowspan="1">&nbsp;</th>

                </tr>
                            </thead>
            <tfoot>
                <tr class="first last">
                    <td colspan="50" class="a-right cart-footer-actions last">

                        <!-- Make this button the first responder rather than empty cart -->
                        <button type="submit" style="visibility:hidden;" data-cart-item-update="" name="update_cart_action" value="update_qty" title="Update Shopping Cart" class="button2 btn-update"><span><span>Update Shopping Cart</span></span></button>

                        <button type="submit" name="update_cart_action" data-cart-empty="" value="empty_cart" title="Empty Cart" class="button2 btn-empty" id="empty_cart_button"><span><span>Empty Cart</span></span></button>

                        <button type="submit"...

JavaScript

//let divs = document.getElementById('shopping-cart-table').getElementsByClassName('first');

let divs = document.getElementById('shopping-cart-table').getElementsByTagName("tr");


for (let x = 0; x < divs.length; x++) {
	let div = divs[x];
	let content = div.innerHTML.trim();
  
	if (content.includes("BTC2020")) {
  	//div.style.display = 'none';
    div.innerHTML = "<td colspan='6'><div class='student-promo-cart'>Student Promo Applied</div></td>";
  }
}