karol-dabrowski

import React, { Component } from 'react';
import { BrowserRouter as Router, Switch, Route } from 'react-router-dom';
import User from './User';

class App extends Component {
    render() {
        return (
            <Router>
                <Switch>
                    <Route exact path='/user/:userName' component={User} />

karol-dabrowski

import React, { Component } from 'react';

class App extends Component {
    state = {
        stringParam: '',
        numberParam: 0
    }

    componentDidMount() {
        const queryParams = new URLSearchParams(window.location.search);