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javascript - 折叠的导航栏不起作用反应和引导 5

问题描述

由于某种原因，在较小的屏幕上单击时，折叠的导航栏图标不会展开。我从 bootstrap 5 复制了示例，并确保包含 bootstrap css/js 和 jquery。

class NavBar extends Component {
    render() {
      return (
        <div className="NavBar">
            <nav className="navbar navbar-expand-lg navbar-dark bg-dark">
                <div className="container-fluid">
                    <button className="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
                      <span className="navbar-toggler-icon"></span>
                    </button>
                    <div className="collapse navbar-collapse" id="navbarNavAltMarkup">
                      <div className="navbar-nav mx-auto">
                        <HashLink className="navbar-brand" to="/#app">
                            Site
                        </HashLink>
                        <HashLink className="nav-link" to="/#about">
                            About
                        </HashLink>
                        <HashLink className="nav-link" to="/#skills">
                            Skills
                        </HashLink>
                        <HashLink className="nav-link" to="/#experience">
                            Experience
                        </HashLink>
                        <Link className="nav-link" to="/calculator">
                            Calculator
                        </Link>
                      </div>
                    </div>
                </div>
            </nav>
        </div>
      );
    }
}

标签： javascripthtmlcssreactjsbootstrap-5

解决方案

我在这里找到了一个通过反应钩子起作用的答案：https ://dev.to/johnotu/how-to-toggle-bootstrap-navbar-collapse-button-in-react-without-jquery-joo

import React, { useState } from 'react';
import Logo from '../images/logo_512x512.png';

const TopNav = props => {
  const [isNavCollapsed, setIsNavCollapsed] = useState(true);

  const handleNavCollapse = () => setIsNavCollapsed(!isNavCollapsed);

  return (
    <nav class="navbar navbar-expand-lg navbar-light bg-light rounded">
      <a class="navbar-brand text-info font-weight-bolder" href="/">
        <img src={Logo} alt="Logo" width="36" height="36" className="vertical-align-middle" />
        <span className="">Discounter</span>
      </a>
      <button class="custom-toggler navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample09" aria-controls="navbarsExample09" aria-expanded={!isNavCollapsed ? true : false} aria-label="Toggle navigation" onClick={handleNavCollapse}>
        <span class="navbar-toggler-icon"></span>
      </button>

      <div class={`${isNavCollapsed ? 'collapse' : ''} navbar-collapse`} id="navbarsExample09">
        <a className="nav-link text-info" href="/contact">Support</a>
        <a className="nav-link text-info" href="/login">Login</a>
        <a href="/request-demo" className="btn btn-sm btn-info nav-link text-white" >Request demo</a>
      </div>
    </nav>
  );
}

export default TopNav;

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