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May 16, 2022 19:43
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Thinking In React: Step 5
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<div id="container"> | |
<!-- This element's contents will be replaced with your component. --> | |
</div> |
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class ProductCategoryRow extends React.Component { | |
render() { | |
const category = this.props.category; | |
return ( | |
<tr> | |
<th colSpan="2"> | |
{category} | |
</th> | |
</tr> | |
); | |
} | |
} | |
class ProductRow extends React.Component { | |
render() { | |
const product = this.props.product; | |
const name = product.stocked ? | |
product.name : | |
<span style={{color: 'red'}}> | |
{product.name} | |
</span>; | |
return ( | |
<tr> | |
<td>{name}</td> | |
<td>{product.price}</td> | |
</tr> | |
); | |
} | |
} | |
class ProductTable extends React.Component { | |
render() { | |
const filterText = this.props.filterText; | |
const inStockOnly = this.props.inStockOnly; | |
const rows = []; | |
let lastCategory = null; | |
this.props.products.forEach((product) => { | |
if (product.name.indexOf(filterText) === -1) { | |
return; | |
} | |
if (inStockOnly && !product.stocked) { | |
return; | |
} | |
if (product.category !== lastCategory) { | |
rows.push( | |
<ProductCategoryRow | |
category={product.category} | |
key={product.category} /> | |
); | |
} | |
rows.push( | |
<ProductRow | |
product={product} | |
key={product.name} | |
/> | |
); | |
lastCategory = product.category; | |
}); | |
return ( | |
<table> | |
<thead> | |
<tr> | |
<th>Name</th> | |
<th>Price</th> | |
</tr> | |
</thead> | |
<tbody>{rows}</tbody> | |
</table> | |
); | |
} | |
} | |
class SearchBar extends React.Component { | |
constructor(props) { | |
super(props); | |
this.handleFilterTextChange = this.handleFilterTextChange.bind(this); | |
this.handleInStockChange = this.handleInStockChange.bind(this); | |
} | |
handleFilterTextChange(e) { | |
this.props.onFilterTextChange(e.target.value); | |
} | |
handleInStockChange(e) { | |
this.props.onInStockChange(e.target.checked); | |
} | |
render() { | |
return ( | |
<form> | |
<input | |
type="text" | |
placeholder="Search..." | |
value={this.props.filterText} | |
onChange={this.handleFilterTextChange} | |
/> | |
<p> | |
<input | |
type="checkbox" | |
checked={this.props.inStockOnly} | |
onChange={this.handleInStockChange} | |
/> | |
{' '} | |
Only show products in stock | |
</p> | |
</form> | |
); | |
} | |
} | |
class FilterableProductTable extends React.Component { | |
constructor(props) { | |
super(props); | |
this.state = { | |
filterText: '', | |
inStockOnly: false | |
}; | |
this.handleFilterTextChange = this.handleFilterTextChange.bind(this); | |
this.handleInStockChange = this.handleInStockChange.bind(this); | |
} | |
handleFilterTextChange(filterText) { | |
this.setState({ | |
filterText: filterText | |
}); | |
} | |
handleInStockChange(inStockOnly) { | |
this.setState({ | |
inStockOnly: inStockOnly | |
}) | |
} | |
render() { | |
return ( | |
<div> | |
<SearchBar | |
filterText={this.state.filterText} | |
inStockOnly={this.state.inStockOnly} | |
onFilterTextChange={this.handleFilterTextChange} | |
onInStockChange={this.handleInStockChange} | |
/> | |
<ProductTable | |
products={this.props.products} | |
filterText={this.state.filterText} | |
inStockOnly={this.state.inStockOnly} | |
/> | |
</div> | |
); | |
} | |
} | |
const PRODUCTS = [ | |
{category: 'Sporting Goods', price: '$49.99', stocked: true, name: 'Football'}, | |
{category: 'Sporting Goods', price: '$9.99', stocked: true, name: 'Baseball'}, | |
{category: 'Sporting Goods', price: '$29.99', stocked: false, name: 'Basketball'}, | |
{category: 'Electronics', price: '$99.99', stocked: true, name: 'iPod Touch'}, | |
{category: 'Electronics', price: '$399.99', stocked: false, name: 'iPhone 5'}, | |
{category: 'Electronics', price: '$199.99', stocked: true, name: 'Nexus 7'} | |
]; | |
const root = ReactDOM.createRoot(document.getElementById('container')); | |
root.render(<FilterableProductTable products={PRODUCTS} />); |
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<script src="https://unpkg.com/react/umd/react.development.js"></script> | |
<script src="https://unpkg.com/react-dom/umd/react-dom.development.js"></script> |
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body { | |
padding: 5px | |
} |
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