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Improve search UX with useDeferredValue #1

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142 changes: 81 additions & 61 deletions src/App.tsx
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Original file line number Diff line number Diff line change
@@ -1,29 +1,101 @@
import { useState, useMemo } from "react";
import { useState, useMemo, useDeferredValue, memo } from "react";
import "./App.css";
import { generateOrders, type Order } from "./generateOrderData";

interface OrderTableProps {
orders: Order[];
}

const OrderTable = memo(function OrderTable({ orders }: OrderTableProps) {
const formatDate = (date: Date) => {
return date.toLocaleDateString("en-US", {
year: "numeric",
month: "short",
day: "numeric",
});
};

const formatCurrency = (amount: number, currency: string) => {
return `${currency} ${amount.toFixed(2)}`;
};
return (
<div className="table-container">
<table>
<thead>
<tr>
<th>Order #</th>
<th>Customer</th>
<th>Email</th>
<th>Date</th>
<th>Status</th>
<th>Total</th>
<th>Items</th>
<th>Payment</th>
<th>Address</th>
<th>City</th>
<th>Country</th>
<th>Tracking</th>
<th>Est. Delivery</th>
</tr>
</thead>
<tbody>
{orders.map((order: Order) => (
<tr key={order.id}>
<td>{order.orderNumber}</td>
<td>{order.customerName}</td>
<td>{order.customerEmail}</td>
<td>{formatDate(order.orderDate)}</td>
<td className={`status status-${order.status}`}>
{order.status}
</td>
<td>{formatCurrency(order.totalAmount, order.currency)}</td>
<td>{order.itemsCount}</td>
<td>{order.paymentMethod.replace("_", " ")}</td>
<td>{order.shippingAddress}</td>
<td>{order.shippingCity}</td>
<td>{order.shippingCountry}</td>
<td>{order.trackingNumber}</td>
<td>{formatDate(order.estimatedDelivery)}</td>
</tr>
))}
</tbody>
</table>
</div>
);
});

function App() {
const [searchTerm, setSearchTerm] = useState("");
const deferredSearchTerm = useDeferredValue(searchTerm);
const [activeStatuses, setActiveStatuses] = useState<Set<Order["status"]>>(
new Set(["pending", "processing", "shipped", "delivered", "cancelled"])
);

// orders could come from a server, in this example it does not matter.
const orders = useMemo(() => generateOrders(5000), []);

const filteredOrders = useMemo(() => {
return orders.filter((order) => {
const matchesSearch =
searchTerm === "" ||
order.orderNumber.toLowerCase().includes(searchTerm.toLowerCase()) ||
order.customerName.toLowerCase().includes(searchTerm.toLowerCase()) ||
order.customerEmail.toLowerCase().includes(searchTerm.toLowerCase()) ||
order.trackingNumber.toLowerCase().includes(searchTerm.toLowerCase());
deferredSearchTerm === "" ||
order.orderNumber
.toLowerCase()
.includes(deferredSearchTerm.toLowerCase()) ||
order.customerName
.toLowerCase()
.includes(deferredSearchTerm.toLowerCase()) ||
order.customerEmail
.toLowerCase()
.includes(deferredSearchTerm.toLowerCase()) ||
order.trackingNumber
.toLowerCase()
.includes(deferredSearchTerm.toLowerCase());

const matchesStatus = activeStatuses.has(order.status);

return matchesSearch && matchesStatus;
});
}, [orders, searchTerm, activeStatuses]);
}, [orders, deferredSearchTerm, activeStatuses]);

const toggleStatus = (status: Order["status"]) => {
setActiveStatuses((prev) => {
Expand All @@ -37,18 +109,6 @@ function App() {
});
};

const formatDate = (date: Date) => {
return date.toLocaleDateString("en-US", {
year: "numeric",
month: "short",
day: "numeric",
});
};

const formatCurrency = (amount: number, currency: string) => {
return `${currency} ${amount.toFixed(2)}`;
};

const statuses: Order["status"][] = [
"pending",
"processing",
Expand All @@ -63,6 +123,7 @@ function App() {
<div className="controls">
<div className="search-container">
<input
autoComplete="off"
type="text"
placeholder="Search by order #, customer name, email, or tracking..."
value={searchTerm}
Expand Down Expand Up @@ -91,48 +152,7 @@ function App() {
</p>
</div>

<div className="table-container">
<table>
<thead>
<tr>
<th>Order #</th>
<th>Customer</th>
<th>Email</th>
<th>Date</th>
<th>Status</th>
<th>Total</th>
<th>Items</th>
<th>Payment</th>
<th>Address</th>
<th>City</th>
<th>Country</th>
<th>Tracking</th>
<th>Est. Delivery</th>
</tr>
</thead>
<tbody>
{filteredOrders.map((order: Order) => (
<tr key={order.id}>
<td>{order.orderNumber}</td>
<td>{order.customerName}</td>
<td>{order.customerEmail}</td>
<td>{formatDate(order.orderDate)}</td>
<td className={`status status-${order.status}`}>
{order.status}
</td>
<td>{formatCurrency(order.totalAmount, order.currency)}</td>
<td>{order.itemsCount}</td>
<td>{order.paymentMethod.replace("_", " ")}</td>
<td>{order.shippingAddress}</td>
<td>{order.shippingCity}</td>
<td>{order.shippingCountry}</td>
<td>{order.trackingNumber}</td>
<td>{formatDate(order.estimatedDelivery)}</td>
</tr>
))}
</tbody>
</table>
</div>
<OrderTable orders={filteredOrders} />
</div>
);
}
Expand Down
4 changes: 0 additions & 4 deletions src/index.css
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Original file line number Diff line number Diff line change
Expand Up @@ -24,10 +24,6 @@ a:hover {

body {
margin: 0;
display: flex;
place-items: center;
min-width: 320px;
min-height: 100vh;
}

h1 {
Expand Down