Question

我对这个react / nodejs / bootstrap事件很陌生。我试图将reactjs-adminlte主题用于bootstrap。我可以让bootstrap小部件工作正常，比如按钮，但是这个主题有问题。我得到的错误是

React.createElement: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: object.

我的代码如下

的index.html

<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
    <meta name="theme-color" content="#000000">
    <!--
      manifest.json provides metadata used when your web app is added to the
      homescreen on Android. See https://developers.google.com/web/fundamentals/engage-and-retain/web-app-manifest/
    -->
    <link rel="manifest" href="%PUBLIC_URL%/manifest.json">
    <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">



    <!--
      Notice the use of %PUBLIC_URL% in the tags above.
      It will be replaced with the URL of the `public` folder during the build.
      Only files inside the `public` folder can be referenced from the HTML.
      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
      work correctly both with client-side routing and a non-root public URL.
      Learn how to configure a non-root public URL by running `npm run build`.
    -->

    <!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/latest/css/bootstrap.min.css">

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/latest/css/bootstrap.min.css">

<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/latest/css/bootstrap-theme.min.css">

<!-- Font Awesome -->
        <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/css/font-awesome.min.css">
        <!-- Ionicons -->
        <link rel="stylesheet" href="https://code.ionicframework.com/ionicons/2.0.1/css/ionicons.min.css">

         <link rel="stylesheet" href="dist/css/AdminLTE.min.css">
        <!-- AdminLTE Skins. Choose a skin from the css/skins
         folder instead of downloading all of them to reduce the load. -->
        <link rel="stylesheet" href="dist/css/skins/_all-skins.min.css">

    <title>React App</title>
  </head>
  <body class="skin-blue sidebar-mini ">
    <noscript>
      You need to enable JavaScript to run this app.
    </noscript>
    <div id="root"></div>
    <!--
      This HTML file is a template.
      If you open it directly in the browser, you will see an empty page.

      You can add webfonts, meta tags, or analytics to this file.
      The build step will place the bundled scripts into the <body> tag.

      To begin the development, run `npm start` or `yarn start`.
      To create a production bundle, use `npm run build` or `yarn build`.
    -->



   <script src="/dist/js/vendors.js"></script>
  <script src="/dist/js/app.bundle.js"></script>
  </body>
</html>

index.js

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';
import registerServiceWorker from './registerServiceWorker';

ReactDOM.render(<App />, document.getElementById('root'));
registerServiceWorker();

App.js

import React, { Component } from 'react';
import './App.css';
import  Sidebar  from 'adminlte-reactjs';

class App extends Component {

  render() {


    return (
      <div className="App">

        <Sidebar>

        </Sidebar>     

      </div>
    );
  }
}

export default App;

很想知道为什么我不能让Sidebar显示出来。它可能很简单，我很遗憾。

由于

Answer 1

也许你应该改变：

import Sidebar from 'adminlte-reactjs';

到

import {Sidebar} from 'adminlte-reactjs';

或：

import  adminlteReactjs  from 'adminlte-reactjs';

let Sidebar  = adminlteReactjs.Sidebar;

<Sidebar>
</Sidebar>

无法使用reactjs-admin-lte来处理我的reactjs项目

的index.html

index.js

App.js

1 个答案: