形如
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'} ] 效果
实现
import React from 'react' 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 ProRow = () => { let lastCategory = '' let rows = [] as any PRODUCTS.map(item => { if (lastCategory !== item.category) { rows.push( <b key={item.category}>{item.category}</b> ) } rows.push( <div key={item.name}> <span>{item.name}</span> <span>{item.price}</span> </div> ) lastCategory = item.category }) return <>{rows}</> } const App = () => <ProRow /> export default App
标签:category,stocked,name,示例,price,react,json,Electronics,true From: https://www.cnblogs.com/-roc/p/17106264.html