herber/app.js

## app.js
const express = require('express');
const app = express();

app.get('*', function(req, res){
  res.sendFile(__dirname + '/index.html');
});

app.listen(3000);

## index.html
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Change url</title>
    <style>
      body {
        text-align: center;
        margin: 0px;
        padding: 0px;
        top: 0px;
        left: 0px;
        font-family: monospace;
        font-size: 1.2em;
      }

      input {
        background: white;
        border: solid black 2px;
        padding: 7px 20px;
        outline: none;
      }
    </style>
  </head>
  <body>
    <h1>Change url</h1>
    <input type="text" placeholder="url">
    <script>
      var input = document.querySelector('input');

      input.addEventListener('input', function() {
        history.pushState('', 'Title', '/' + input.value);
      });
    </script>
  </body>
</html>

## package.json
{
  "name": "url",
  "version": "1.0.0",
  "main": "app.js",
  "scripts": {
    "start": "node app.js"
  },
  "dependencies": {
    "express": "^4.15.2"
  }
}
	const express = require('express');
	const app = express();

	app.get('*', function(req, res){
	res.sendFile(__dirname + '/index.html');
	});

	app.listen(3000);
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title>Change url</title>
	<style>
	body {
	text-align: center;
	margin: 0px;
	padding: 0px;
	top: 0px;
	left: 0px;
	font-family: monospace;
	font-size: 1.2em;
	}

	input {
	background: white;
	border: solid black 2px;
	padding: 7px 20px;
	outline: none;
	}
	</style>
	</head>
	<body>
	<h1>Change url</h1>
	<input type="text" placeholder="url">
	<script>
	var input = document.querySelector('input');

	input.addEventListener('input', function() {
	history.pushState('', 'Title', '/' + input.value);
	});
	</script>
	</body>
	</html>
	{
	"name": "url",
	"version": "1.0.0",
	"main": "app.js",
	"scripts": {
	"start": "node app.js"
	},
	"dependencies": {
	"express": "^4.15.2"
	}
	}