Question

我是Ionic的新手。我已经用超级模板开始了项目。但是当我尝试在浏览器中运行应用程序时。它抛出一个错误说：

ReferenceError: webpackJsonp is not defined
    at http://localhost:8100/build/main.js:1:1

我已经尝试将vendor.js放在index.html中但是没有用。

这是index.html文件。我删除了vendor.js，因为它不起作用。

<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
  <meta charset="UTF-8">
  <title>Ionic App</title>
  <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
  <meta name="format-detection" content="telephone=no">
  <meta name="msapplication-tap-highlight" content="no">

  <link rel="icon" type="image/x-icon" href="assets/icon/favicon.ico">
  <link rel="manifest" href="manifest.json">
  <meta name="theme-color" content="#4e8ef7">

  <!-- cordova.js required for cordova apps -->
  <script src="cordova.js"></script>

  <!-- un-comment this code to enable service worker
  <script>
    if ('serviceWorker' in navigator) {
      navigator.serviceWorker.register('service-worker.js')
        .then(() => console.log('service worker installed'))
        .catch(err => console.log('Error', err));
    }
  </script>-->

  <link href="build/main.css" rel="stylesheet">

</head>
<body>

  <!-- Ionic's root component and where the app will load -->
  <ion-app></ion-app>

  <!-- The polyfills js is generated during the build process -->
  <script src="build/polyfills.js"></script>

  <!-- The bundle js is generated during the build process -->
  <script src="build/main.js"></script>

</body>
</html>

Answer 1

字面上只是和你一样经历过同样的事情。我在 /src/index.html 中的main.js之前添加了vendor.js脚本 - 现在它在本地运行。

  <!-- The polyfills js is generated during the build process -->
  <script src="build/polyfills.js"></script>

  <script src="build/vendor.js"></script>

  <!-- The bundle js is generated during the build process -->
  <script src="build/main.js"></script>

Answer 2

这是Ionic-App-Scripts的一个重大变化

https://github.com/ionic-team/ionic-app-scripts/releases/tag/v2.0.0

必须修改

src / index.html以包含新的供应商脚本标记。

...
<body>

  <!-- Ionic's root component and where the app will load -->
  <ion-app></ion-app>

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

  <!-- The polyfills js is generated during the build process -->
  <script src="build/polyfills.js"></script>

  <!-- all code from node_modules directory is here -->
  <script src="build/vendor.js"></script>

  <!-- The bundle js is generated during the build process -->
  <script src="build/main.js"></script>

</body>
...

Answer 3

在vendor.js

中的脚本代码中添加< your application directory > /src/index.html路径

<script src="build/vendor.js"></script>

同时在< your application directory >/src/service-worker.js文件中进行更改 - 在vendor.js部分中加入precache：

// pre-cache our key assets
self.toolbox.precache(
    [
      './build/main.js',
      './build/vendor.js',   // <===  Add vendor.js
      './build/main.css',
      './build/polyfills.js',
      'index.html',
      'manifest.json'
    ]
);

Answer 4

当我开始用离子3开发旧的离子2项目时，我面临同样的问题。按照这个步骤适合我。 opne src\index.html 把这一行

<script src="build/vendor.js"></script>

之前

<script src="build/main.js"></script>

之后

<script src="build/polyfills.js"></script>

像这样

<!DOCTYPE html>
...
<body>

  <!-- Ionic's root component and where the app will load -->
  <ion-app>
  </ion-app>
  <!-- The polyfills js is generated during the build process -->
  <script src="build/polyfills.js"></script>
  <script src="build/vendor.js"></script>  <---- here
  <!-- The bundle js is generated during the build process -->
  <script src="build/main.js"></script>

</body>

</html>

Answer 5

离子版本问题兄弟。

检查版本。

npm install -g ionic@v3.0.1
npm install -g ionic@v2.0.1
npm install -g ionic@v1

Answer 6

或

npm install -g ionic@v3.0.1

Answer 7

当我遇到这个错误时，我正在一个ReactJs项目上。这可能是因为package.json文件中缺少相关性而导致的错误最终以OP报告的错误形式冒出。在我们的案例中，缺少对omitJs npm软件包的引用。我在package.json文件的“依赖项”部分中添加以下内容的那一刻，一切开始起作用：

"dependencies": {
.....other dependencies
"omit.js": "1.0.0"
}

Answer 8

我只是遇到了这个问题，在我的情况下，polyfills / vendor / main文件的顺序并不需要做任何事情，但这只是vendor.js文件的大小。

我意识到它是因为它可以在我的本地计算机上运行，因此，我确实发现vendor.js为5MB，因此，我使用--prod参数再次构建了该应用程序：

ionic cordova build ios --prod

Ionic 2：ReferenceError：未定义webpackJsonp

8 个答案: