嘿,我需要一些帮助,我对 React 还很陌生,并试图在教程的帮助下创建个人页面并从导航栏开始,但是当我尝试加载页面时,我收到了一些错误消息。
有人可以帮助我理解并解决这个问题吗,谢谢
应用程序.js
import logo from './logo.svg';
import './App.css';
import 'bootstrap/dist/css/bootstrap.min.css';
import { NavBar } from './components/NavBar';
function App() {
return (
<div className="App">
<NavBar />
</div>
);
}
export default App;
NavBar.js:
import Container from 'react-bootstrap/Container';
import Nav from 'react-bootstrap/Nav';
import Navbar from 'react-bootstrap/Navbar';
import { useState, useEffect } from 'react';
import logo from '../assets/img/logo.svg';
import navIcon1 from '../assets/img/nav-icon1.svg';
import navIcon2 from '../assets/img/nav-icon2.svg';
import navIcon3 from '../assets/img/nav-icon3.svg';
export const NavBar = () => {
const [activeLink, setActiveLink] = useState('home');
const [scrolled, seScrolled] = useState(false);
useEffect(() => {
const onScroll = () => {
if(window.scrollY > 50) {
seScrolled(true)
} else {
seScrolled(false)
}
}
window.addEventListener("scroll", onScroll);
return () => window.removeEventListener("scroll", onScroll)
}, [])
const onUpdateActiveLink = (value) => {
setActiveLink(value);
}
return(
<Navbar expand="lg" className={scrolled ? "scrolled" : ""}>
<Container>
<Navbar.Brand href="#home">
<img src={logo} alt='Logo' />
</Navbar.Brand>
<Navbar.Toggle aria-controls="basic-navbar-nav">
<span className='navbar-toggler-icon'></span>
</Navbar.Toggle>
<Navbar.Collapse id="basic-navbar-nav">
<Nav className="me-auto">
<Nav.Link href="#home" className={activeLink === 'home' ? 'active navbar-link' : 'navbar-link'} onClick={() => onUpdateActiveLink('home')}>Home</Nav.Link>
<Nav.Link href="#skills" className={activeLink === 'skills' ? 'active navbar-link' : 'navbar-link'} onClick={() => onUpdateActiveLink('skills')}>Skills</Nav.Link>
<Nav.Link href="#projects" className={activeLink === 'projects' ? 'active navbar-link' : 'navbar-link'} onClick={() => onUpdateActiveLink('projects')}>Projects</Nav.Link>
</Nav>
<span className='navbar-text'>
<div className='social-icon'>
<a href='...'>img src={navIcon1} alt=''</a>
<a href='...'>img src={navIcon2} alt=''</a>
<a href='...'>img src={navIcon3} alt=''</a>
</div>
<button className='vvd' onClick={() => console.log('connect<')}><span>Let's Connect</span></button>
</span>
</Navbar.Collapse>
</Container>
</Navbar>
)
}
我尝试了多种方法,但没有任何效果......