Reaction应用程序中的引导导航栏在移动视图上不起作用 [英] Bootstrap navbar in react app not working on mobile view

问题描述

我在Reaction应用程序的引导导航栏中遇到问题。这款应用在桌面浏览器上运行良好，但在手机浏览器上却不起作用。请在桌面浏览器和移动浏览器的GitHub页面上查看我的应用程序。你可以理解这个问题。 GitHub-页面链接：https://iamsanga.github.io/test-app/

下面是App.js代码：

import { BrowserRouter as Router, Switch, Route, Link } from "react-router-dom";

import Create from "./components/Create";
import Edit from "./components/Edit";
import Index from "./components/Display";

class App extends Component {
  constructor(props) {
    super(props);
    this.state = { data: [], results: [], query: "" };
  }

  onSearch = event => {
    this.setState({ query: event });

    let updateList = this.state.data;
    updateList = updateList.filter(item => {
      return (
        item.name.toLowerCase().search(this.state.query.toLowerCase()) !== -1
      );
    });

    this.setState({
      results: updateList
    });
  };

  receiveData = data => {
    this.setState({
      data: [...this.state.data, data]
    });
    // console.log(this.state.data);
  };
  onDelete = name => {
    // console.log(name);
    const filteredData = this.state.data.filter(data => {
      return data.name !== name;
    });
    this.setState({ data: filteredData });
  };

  onEdit = (newData, orgName) => {
    let updateData = this.state.data;
    updateData = updateData.map(data => {
      if (data.name === orgName) {
        data.name = newData.name;
        data.shop = newData.shop;
        data.status = newData.status;
      }

      return updateData;
    });

    this.setState({ updateData });
  };

  render() {
    const { data, results, query } = this.state;
    // console.log("res",this.state.results)
    var datas = results !== "" && !query ? data : results;

    return (
      <Router>
        <div className="container">
          <nav className="navbar navbar-expand-lg navbar-blue bg-light">
            <div
              className="collapse navbar-collapse"
              id="navbarSupportedContent"
            >
              <ul className="navbar-nav mr-auto">
                <li className="nav-item">
                  <Link to={"/create"} className="nav-link">
                    Home
                  </Link>
                </li>
                <li className="nav-item">
                  <Link to={"/index"} className="nav-link">
                    Records
                  </Link>
                </li>
              </ul>
            </div>
          </nav>
          <Switch>
            <Route
              exact
              path="/"
              render={() => <Create data={this.receiveData} />}
            />
            <Route
              path="/create"
              render={() => <Create data={this.receiveData} />}
            />
            <Route path="/edit" render={() => <Edit onEdit={this.onEdit} />} />
            <Route
              path="/index"
              render={() => (
                <Index
                  onSearch={this.onSearch}
                  onDelete={this.onDelete}
                  data={datas}
                />
              )}
            />
          </Switch>
        </div>
      </Router>
    );
  }
}

export default App;

请给我提供一个解决方案。预先感谢.！！

推荐答案

将以下cdn添加到您的public/index.html

  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">

  <title>React App</title>
  <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"
    integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN"
    crossorigin="anonymous"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"
    integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q"
    crossorigin="anonymous"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"
    integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl"
    crossorigin="anonymous"></script>

在导航栏中使用以下代码

      <nav className="navbar navbar-expand-lg navbar-light bg-light">
        <button className="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
          <span className="navbar-toggler-icon"></span>
        </button>
        <div className="collapse navbar-collapse" id="navbarNav">
          <ul className="navbar-nav">
            <li className="nav-item active">
              <Link to={"/create"} className="nav-link">
                Home
              </Link>
            </li>
            <li className="nav-item">
              <Link to={"/index"} className="nav-link">
                Records
              </Link>
            </li>
          </ul>
        </div>
      </nav>

代码无法工作的原因

1)Bootstrap有自己的js库和jQuery的依赖项(您还没有包含) 2)实际上导航栏在那里，但是控件或导航项是不可见的，因为您编写了响应代码来显示仅在大屏幕上可见的导航项。在移动屏幕中显示为可折叠的导航栏。但是您还没有编写在手机屏幕中切换导航栏的代码

这篇关于Reaction应用程序中的引导导航栏在移动视图上不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！