我正在尝试构建一个 Bootstrap 4
NavBar
,它将使用 React-router 中的 ReactJS <Link>
组件,而不是原始的 <li>
类。
目前我在正确构建组件时遇到了麻烦,因为最终 ReactJS 组件没有达到预期的行为。
让我们从最初的 Bootstrap 4 NavBar 示例开始:
<nav class="navbar navbar-toggleable-md navbar-light bg-faded">
<button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<a class="navbar-brand" href="#">Navbar</a>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#">Disabled</a>
</li>
</ul>
<form class="form-inline my-2 my-lg-0">
<input class="form-control mr-sm-2" type="text" placeholder="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
这正在迁移到 ReactJS 组件,如下所示:
import React from 'react';
import Link from 'react-router-dom/Link';
function Menu() {
return (
<div>
<nav className="navbar navbar-toggleable-md navbar-light bg-faded">
<button className="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span className="navbar-toggler-icon"></span>
</button>
<a className="navbar-brand" href="#">Navbar</a>
<div className="collapse navbar-collapse" id="navbarSupportedContent">
<ul className="navbar-nav mr-auto">
<span className="nav-item active">
<Link className="nav-link" to="/">Home <span className="sr-only">(current)</span></Link>
</span>
<span className="nav-item">
<Link className="nav-link" to="/counter">Counter</Link>
</span>
<span className="nav-item">
<Link className="nav-link disabled" to="/about">About</Link>
</span>
</ul>
<form className="form-inline my-2 my-lg-0">
<input className="form-control mr-sm-2" type="text" placeholder="Search" />
<button className="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
</div>
);
}
export default Menu;
虽然它可以运行,但许多格式都会丢失,并且“导航链接禁用”等一些功能无法正常工作(您可以单击“关于”,它会转到所需的页面)。我确信我的转换是错误的。如何修复组件代码以便在不使用 React 的情况下正确反映原始行为?
import React from 'react';
import { render } from 'react-dom';
import { BrowserRouter, Route, Switch, Link } from 'react-router-dom';
const AppPage = () => <h1>React Router 4 & Bootstrap 4</h1>
const HomePage = () => <h1>Welcome Home !</h1>
const AboutPage = () => <h1>About Us</h1>
const OneMorePage = () => <h1>One More Page !</h1>
const PrimaryLayout = () => (
<div>
<nav className="navbar navbar-expand-md navbar-dark bg-dark">
<Link className="navbar-brand" to="/">App</Link>
<button type="button" className="navbar-toggler" data-toggle="collapse" data-target="#navbarNav">
<span className="navbar-toggler-icon"></span>
</button>
<div className="collapse navbar-collapse" id="navbarNav">
<ul className="navbar-nav mr-auto">
<li className="nav-item"><Link className="nav-link" to="/home">Home</Link></li>
<li className="nav-item"><Link className="nav-link" to="/about">About</Link></li>
<li className="nav-item"><Link className="nav-link" to="/one">More</Link></li>
</ul>
</div>
</nav>
<div className="container-fluid">
<Switch>
<Route path="/" exact component={AppPage} />
<Route path="/home" component={HomePage} />
<Route path="/about" component={AboutPage} />
<Route path="/one" component={OneMorePage} />
</Switch>
</div>
</div>
)
const App = () => (
<BrowserRouter>
<PrimaryLayout />
</BrowserRouter>
)
render(<App />, document.getElementById('root'))
只需将其添加到您的 CSS 中:
.nav-link.disabled { pointer-events: none }
.也就是说,从长远来看,我强烈建议使用基于引导的 React 组件库。我个人喜欢
https://reactstrap.github.io/.
Bootstrap
也有一个
Javascript
组件,它在
React
中不起作用,因为它与
React's
Javascript
发生冲突。
CSS
部分有效,这就是您所看到的。你应该使用类似
React-Bootstrap
-https://react-bootstrap.github.io/ 的东西。这些都是编写为
Bootstrap
组件的所有
React
组件,因此您可以通过在
React
中导入和使用它们来以标准
JSX
方式使用它们。