Node.js+koa2

const Koa = require(`koa`)
const app = new Koa()
const bodyParser = require(`koa-bodyparser`)

app.use(bodyParser())

app.use(async (ctx) => {
    if (ctx.url === `/` && ctx.method === `GET`) {
        let html = `
        <h2>This is demo</h2>
        <form method="POST" action="/">
            <p>username:</p>
            <input name="username">
            <p>age:</p>
            <input name="age">
            <p>website</p>
            <input name="website">
            <button type="submit">submit</button>                 
        </form>
        `
        ctx.body = html
    } else if (ctx.url === `/` && ctx.method === `POST`) {
        let postData = ctx.request.body;
        ctx.body = postData
    } else {
        ctx.body = `<h2>Not find</h2>`
    }
})


app.listen(3000, () => {
    console.log(`demo is run`)
})

github地址：https://github.com/Rossy11/node