渲染ejs文件

const express=require('express')
const app=express()

app.set('view engine', 'ejs')
app.set('views', __dirname + "/public")

app.get('/', (req, res) => {
  res.render('index')
})

app.listen(3000)

渲染html文件

const express=require('express')
const app=express()

app.set('views', path.join(__dirname, 'public'))
app.engine('.html', require('ejs').__express)
app.set('view engine', 'html')

app.get('/', (req, res) => {
  res.render('index')
})

app.listen(3000)