test2

index.js

var express = require('express');
var router = express.Router();

router.get("/test1/:address/:country", function (req, res, next) {
  const name = req.query.name;
  const number = req.query.number;
  const address = req.params.address;
  const country = req.params.country;

  res.render("test1", {
    user: {
      name: name,
      number: number,
      address: address,
      country: country
    },
  });
});

router.get("/test2", function (req, res, next) {
  res.render("test2");
});

router.post("/test2", function (req, res, next) {
  const name = req.body.name;
  const number = req.body.number;
  const introduction = req.body.introduction;

  res.render("test2", {
    user: {
      name: name,
      number: number,
      introduction: introduction,
    }
  });
});

module.exports = router;

test2.jade

doctype html
html
  head
    link(rel='stylesheet', href='/stylesheets/style.css')
  body
    form(method="post")
      input(type="text" name="name" placeholder="please input name") 
      p
      input(type="text" name="number" placeholder="please input number") 
      p
      textarea(name="introduction", cols="30", rows="10" placeholder="please input introduction") 
      p
      button(type="submit") Submit
    hr
    if user
      if user.name
        p= user.name
      if user.number
        p= user.number
      if user.introduction
        p= user.introduction