Question

我正在尝试构建一个Boostrap 4 NavBar，它将使用react-router而不是原始<Link>类的ReactJS <li>组件。

目前我在构建组件时遇到了麻烦，因为最后ReactJS组件没有预期的行为。

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>

这将迁移到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;

运行时，许多格式都会丢失，并且“禁用导航链接”等功能无效（您可以点击“关于”，然后转到所需的页面）。

我确定我的转换错误，所以请在此处帮助修复组件代码，以便在没有React的情况下正确反映原始行为。

Answer 1

也许你已经解决了。这是Bootstrap 4的一个工作示例：

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'))

Answer 2

问题是Bootstrap还有一个Javascript组件，因为它与React React's冲突而无法在Javascript中使用。 CSS部分正如您所见。

您应该使用React-Bootstrap - https://react-bootstrap.github.io/之类的内容。这些是Bootstrap组件编写为React组件，因此您可以通过在React中导入和使用它们，以标准JSX方式使用它们。

Bootstrap 4 NavBar，带有React <link />组件

2 个答案: