@koa/router

Router middleware for Koa. Maintained by Forward Email and Lad.

Table of Contents

• Features
• Migrating to 7 / Koa 2
• Install
• Typescript Support
• API Reference
• Contributors
• License

Features

• Express-style routing (app.get, app.put, app.post, etc.)
• Named URL parameters
• Named routes with URL generation
• Match routes with specific host
• Responds to OPTIONS requests with allowed methods
• Support for 405 Method Not Allowed and 501 Not Implemented
• Multiple route middleware
• Multiple and nestable routers
• async/await support

Migrating to 7 / Koa 2

• The API has changed to match the new promise-based middleware signature of koa 2. See the koa 2.x readme for more information.
• Middleware is now always run in the order declared by .use() (or .get(), etc.), which matches Express 4 API.

Install

npm:

const http = require('http');
const fs = require('fs');
const url = require('url');
const path = require('path');
const qs = require('querystring');

const app = http.createServer((req, res) => {
    res.setHeader('Access-Control-Allow-Origin', '*');
    res.setHeader('Content-Type', 'text/html;charset=utf8');
    let urlparse = url.parse(req.url)
    let shoppath = path.join(__dirname, 'shop.json')

    if (urlparse.pathname == '/showdata') {
        let shopdata = fs.readFileSync(shoppath, 'utf-8')
        return res.end(shopdata)
    }

    if (urlparse.pathname == '/showquery') {
        let params = qs.parse(urlparse.query);
        let shopdata = JSON.parse(fs.readFileSync(shoppath, 'utf-8'));
        let data = shopdata.filter((item) => {
            return item.name.search(params.name) != -1;
        })
        return res.end(JSON.stringify(data))
    }
    if (urlparse.pathname == '/showdel') {
        let params = qs.parse(urlparse.query);
        let shopdata = JSON.parse(fs.readFileSync(shoppath, 'utf-8'));
        if (shopdata.findIndex((item) => item.id == params.id) != -1) {
            shopdata.splice(shopdata.findIndex((item) => item.id == params.id), 1)
        } else {
            return res.end('403')
        }
        fs.writeFileSync(shoppath, JSON.stringify(shopdata, 'utf-8'));
        return res.end('200');
    }
    if (urlparse.pathname == '/showadd') {
        let params = qs.parse(urlparse.query);
        let shopdata = JSON.parse(fs.readFileSync(shoppath, 'utf-8'));
        shopdata.push(params);
        fs.writeFileSync(shoppath, JSON.stringify(shopdata, 'utf-8'));
        return res.end('200');
    }

    if (urlparse.pathname == '/showput') {
        let params = qs.parse(urlparse.query);
        let shopdata = JSON.parse(fs.readFileSync(shoppath, 'utf-8'));
        for (let i = 0; i < shopdata.length; i++) {
            if (params.id == shopdata[i].id) {
                if (shopdata[i].status == 0) {
                    shopdata[i].status = 1;
                } else {
                    shopdata[i].status = 0
                }
            }
        }
        fs.writeFileSync(shoppath, JSON.stringify(shopdata, 'utf-8'));
        return res.end('200');
    }

})

app.listen(3000)

Typescript Support

 <input type="text" name="" id="search"> <button id="btn">搜索</button>
    <div id="menu"></div>

    
  let ajax = new XMLHttpRequest();
    function render() {
        ajax.open('get', 'http://localhost:3000/showdata');
        ajax.send();
        ajax.onload = () => {
            let data = JSON.parse(ajax.responseText);
            menu.innerHTML = data.map((item) => {
                return `
                <p>${item.id}</p>
                <p>${item.name}</p>
                <p>${item.price}</p>
                <p>${item.status == 1 ? '上架中' : '未下架'}</p>
                <button onclick='Del(${item.id})'>删除</button>
            `
            }).join('')
        }
    }
    render();


    btn.onclick = () => {
        ajax.open('get', `http://localhost:3000/showquery?name=${search.value}`);
        ajax.send();
        ajax.onload = () => {
            let data = JSON.parse(ajax.responseText);
            menu.innerHTML = data.map((item) => {
                return `
                <p>${item.id}</p>
                <p>${item.name}</p>
                <p>${item.price}</p>
                <p>${item.status == 1 ? '上架中' : '未下架'}</p>
            `
            }).join('')
        }

    }

    const Del = (id) => {
        ajax.open('get', `http://localhost:3000/showdel?id=${id}`);
        ajax.send();
        render();
    }

API Reference

See API Reference for more documentation.

Contributors

| Name | | ---------------- | | Alex Mingoia | | @koajs |

License

MIT © Alex Mingoia