引导程序:未捕获的TypeError:无法读取未定义的属性'fn'

时间:2018-07-16 20:56:10

标签: jquery node.js bootstrap-4 electron

我正在尝试使用Bootstrap开发一个Electron应用程序。我收到此错误消息:

Uncaught TypeError: Cannot read property 'fn' of undefined
at setTransitionEndSupport (bootstrap.js:122)
at bootstrap.js:199
at bootstrap.js:201
at bootstrap.js:9
at bootstrap.js:10

我在package.json中的依赖项是:

"dependencies": {
  "bootstrap": "^4.1.2",
  "electron": "^2.0.5",
  "jquery": "^3.3.1",
  "popper.js": "^1.14.3"
}

我的index.html文件是:

<!DOCTYPE html>
<html>

<head>
  <meta charset="UTF-8">
  <title>Release Management Report</title>

</head>

<body>

  <div class="container">

    <h1>Bootstrap Test</h1>

    <p>
        We are using node
        <script>document.write(process.versions.node)</script>, Chrome
        <script>document.write(process.versions.chrome)</script>, and Electron
        <script>document.write(process.versions.electron)</script>.
    </p>

  </div>

  <script src="node_modules/jquery/dist/jquery.min.js"></script>
  <script src="node_modules/popper.js/dist/umd/popper.min.js"></script>
  <script src="node_modules/bootstrap/dist/js/bootstrap.js"></script>

</body>

</html>

然后从Electron快速入门中的main.js加载html文件:

const { app, BrowserWindow } = require('electron')

// Keep a global reference of the window object, if you don't, the window will
// be closed automatically when the JavaScript object is garbage collected.
let win

function createWindow() {
  // Create the browser window.
  win = new BrowserWindow({ width: 800, height: 600 })

  // and load the index.html of the app.
  win.loadFile('index.html')

  // Open the DevTools.
  win.webContents.openDevTools()

  // Emitted when the window is closed.
  win.on('closed', () => {
    // Dereference the window object, usually you would store windows
    // in an array if your app supports multi windows, this is the time
    // when you should delete the corresponding element.
    win = null
  })
}

// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.on('ready', createWindow)

// Quit when all windows are closed.
app.on('window-all-closed', () => {
  // On macOS it is common for applications and their menu bar
  // to stay active until the user quits explicitly with Cmd + Q
  if (process.platform !== 'darwin') {
    app.quit()
  }
})

app.on('activate', () => {
  // On macOS it's common to re-create a window in the app when the
  // dock icon is clicked and there are no other windows open.
  if (win === null) {
    createWindow()
  }
})

我找到的大多数解决方案都告诉我在Bootstrap之前导入jQuery,但这已经是我正在做的事情。

感谢您的帮助!

4 个答案:

答案 0 :(得分:9)

我找到了解决问题的方法。

我在index.html中添加了一个脚本:

<script src="scripts/script.js"></script>

这是script.js的内容:

window.$ = window.jQuery = require('jquery'); // not sure if you need this at all
window.Bootstrap = require('bootstrap');

我们可以从index.html删除这些行以避免重复导入:

<script src="node_modules/jquery/dist/jquery.min.js"></script>
<script src="node_modules/popper.js/dist/umd/popper.min.js"></script>
<script src="node_modules/bootstrap/dist/js/bootstrap.js"></script>

我在以下位置找到了此解决方案:https://github.com/understrap/understrap/issues/449, 根据karo1915的评论。

答案 1 :(得分:3)

就我而言,我的脚本导入顺序错误。引导程序导入应该在popper和jquery导入之后。

  

因为Bootstrap v4。+以上版本取决于popper.js和jquery

"scripts": [
          "./node_modules/jquery/dist/jquery.slim.min.js",
          "./node_modules/popper.js/dist/umd/popper.min.js",
          "./node_modules/bootstrap/dist/js/bootstrap.min.js"
        ]

答案 2 :(得分:2)

感谢Griford的回答,我设法使我的Angular&Electron应用程序与Bootstrap一起运行。我在这里想要做的就是不需要外部文件-您也可以在脚本块中初始化JQuery和Bootstrap:

import java.text.SimpleDateFormat;
import java.util.Date;

public class Main {
  public static void main(String[] argv) throws Exception {

    Date date = new Date();
    SimpleDateFormat simpDate;

    simpDate = new SimpleDateFormat("kk:mm:ss");
    System.out.println(simpDate.format(date));

  }
}

这适用于以下版本(Electron 2.0.7):

<script>
  window.$ = window.jQuery = require('jquery');
  window.Bootstrap = require('bootstrap');
</script>

注意:通过以上两行初始化时,使用Bootstrap不需要其他脚本集成。另外,您唯一需要的就是CSS(就我而言,是通过angular.json添加到捆绑包中的)。

答案 3 :(得分:0)

引导程序4.1.3出现相同的错误,并且我确定脚本顺序正确,并且将jquery放在引导程序之前。

由于我通过tampermonkey属性将这些脚本加载到@require脚本(用于管理可以修改当前网页的第三方脚本的浏览器加载项)中,因此很难在jquery加载之间注入代码和引导加载。

更改为引导程序的先前版本3.3.7可解决该错误。等待下一个引导程序版本将解决此问题。