Hello NEXT.js
原创
©著作权归作者所有:来自51CTO博客作者JediHongbin的原创作品,请联系作者获取转载授权,否则将追究法律责任
全局安装
sudo yarn global add create-next-app
创建
yarn create next-demo
cd next-demo
指定端口打开。
npm run dev -- -p 3001
or yarn dev -p 3001
文件结构
样式使用
import styles from "../styles/Home.module.css";
{/* import 外部css文件要加.module */}
export default function Home() {
return (
<div className={styles.container}>
{/* 全局样式 eg: pointer 在_app.js中引入 */}
{/* 引入的css eg: styles.textShadow */}
{/* 全局样式,外部样式一起使用:className={`pointer ${styles.textShadow}` */}
<h1 className={`pointer ${styles.textShadow}`}>Hello NEXT</h1>
// 内部css
<style jsx>{`
h1 {
text-decoration: underline;{/*文字下划线*/}
}
`}</style>
</div>
);
}
定义Head
import Head from "next/head";
<Head>
...
</Head>
示例
import "../styles/globals.css";
import Head from "next/head";
function MyApp({ Component, pageProps }) {
return (
<>
<Component {...pageProps} />
<Head>
<title>hello NEXT</title>
<link rel="icon" href="../public/favicon.ico" />
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no"/>
</Head>
</>
);
}
export default MyApp;
可以定义全局Head,也可以任意页面定义自己的Head
省心路由 page文件对应路由,在page下创建文件,即生成对应路由,如下:
路由跳转:
import Link from 'next/link'
<Link href="/about"><a>about</a></Link>
or 编程式导航
import { useRouter } from 'next/router'
const { push } = useRouter()
<a onClick={() => {push("/about")}}>about</a>
路由监听
路由拥有六种监听类型
routeChangeStart
routerChangeComplete
routerChangeErroe
routerHistoryChange
hashChangeStart
hashChangeCOmplete
使用示例:
import Router from "next/router";
//...
const {
push,
events: { on:routerListener },
} = Router;
routerListener("routeChangeStart", (...args) => {
console.log("args", ...args);
});
路由参数获取
import { useRouter } from "next/router";
export default function About() {
const { query } = useRouter();
console.log("query", query);
return (
<div>
<h1>About</h1>
</div>
);
}
路由传参
<Link
href={{ pathname: "/about", query: { id: 123 } }}
as={{ pathname: `/about/123` }}
>
<a>about-LINK</a>
</Link>
or
<a
onClick={() => {
push({ pathname: "/about", query: { id: 456 } },'/about/456');
}}
>
about
</a>
各种meta标签