express middleware

기본

const middleware = (req, res, next) => {
  console.log('middleware')
  next()
})

router.use('path', middleware, (req, res, next) => {
  console.log('route')
})

결과

middleware
route

다중 미들웨어

const middleware1 = (req, res, next) => {
  console.log('middleware1')
  next()
})
const middleware2 = (req, res, next) => {
  console.log('middleware2')
  next()
})

// 순서대로 미들웨어 수행
router.use('path', middleware1, middleware2, (req, res, next) => {
  console.log('route')
})

결과

middleware1
middleware2
route