从外部调用webpacked代码（HTML脚本标记） [英] Calling webpacked code from outside (HTML script tag)

问题描述

假设我有这样的类（用typescript写的），我把它与webpack捆绑在 bundle.js 中。

 导出类EntryPoint {
 static run（）{
 ... 
} 
} 
  

在我的index.html中，我将包含这个包，但是我还想调用这个静态方法。

 < script src =build / bundle.js>< / script> 
< script> 
 window.onload = function（）{
 EntryPoint.run（）; 
} 
< / script> 
  

但是， EntryPoint 在此处未定义案件。那么我怎样才能从另一个脚本调用捆绑的JavaScript呢？

新增： Webpack配置文件。

解决方案

看来你想公开webpack软件包作为图书馆。您可以配置webpack以将您的库展示在您自己的变量中的全局上下文中，如 EntryPoint 。

我不知道TypeScript，所以这个例子使用普通的JavaScript代替。但这里最重要的部分是webpack配置文件，特别是输出部分： b
$ b

webpack.config.js

  module.exports = {
条目：'./index.js'，
输出：{ 
 path：'./lib'，
 filename：'yourlib.js'，
 libraryTarget：'var'，
 library：'EntryPoint'
} 
}; 
  

index.js

  module.exports = {
 run：function（）{
 console.log（'run from library'）; 
} 
}; 
  

然后，您将可以像访问期望的那样访问您的库方法：

 < script src =lib / yourlib.js>< / script> 
< script> 
 window.onload = function（）{
 EntryPoint.run（）; 
}; 
< / script> 
  

检查 gist 与实际代码。

Suppose that I have class like this (written in typescript) and I bundle it with webpack into bundle.js.

export class EntryPoint {
    static run() {
        ...
    }
}

In my index.html I will include the bundle, but then I would also like to call that static method.

<script src="build/bundle.js"></script>
<script>
    window.onload = function() {
        EntryPoint.run();
    }
</script>

However, the EntryPoint is undefined in this case. How would I call the bundled javascript from another script then?

Added: Webpack config file.

解决方案

It seems that you want to expose the webpack bundle as a library. You can configure webpack to expose your library in the global context within a variable of your own, like EntryPoint.

I don't know TypeScript so the example uses plain JavaScript instead. But the important piece here is the webpack configuration file, and specifically the output section:

webpack.config.js

module.exports = {
  entry: './index.js',
  output: {
    path: './lib',
    filename: 'yourlib.js',
    libraryTarget: 'var',
    library: 'EntryPoint'
  }
};

index.js

module.exports = {
  run: function () {
    console.log('run from library');
  }
};

Then you will be able to access your library methods like you expect:

<script src="lib/yourlib.js"></script>
<script>
  window.onload = function () {
    EntryPoint.run();
  };
</script>

Check the gist with the actual code.

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