Angular 2和jQuery - 如何测试?

[英]Angular 2 and jQuery - how to test?

I am using Angular-CLI (webpack version) for my Angular 2 project and I also need to use jQuery (sadly. In my case, it's a dependency of Semantic-UI and I am using it for handling menu dropdowns).

我正在为Angular 2项目使用Angular-CLI(webpack版本),我还需要使用jQuery(遗憾的是。在我的情况下,它是Semantic-UI的依赖,我用它来处理菜单下拉菜单)。

The way I am using it:


npm install jquery --save

Then listing in it angular-cli.json file in the scripts array:


scripts": [

So it gets included into bundle file and this file is automatically used to root html file:

所以它被包含到bundle文件中,这个文件自动用于root html文件:

<script type="text/javascript" src="scripts.bundle.js">

Then declare var $: any; in files where I need it and it works well.

然后声明var $:any;在我需要它的文件中,它运作良好。

However there is a problem with ng test tests, as Karma throws an error $ is not defined.


1 个解决方案



This is because the testing html file, provided by Karma, doesn't include the scripts.bundle.js file as normally served version does.


The solution is easy; you just include same path to the jquery file into karma.config.js file in project's root folder. This file is available at the root of the project.


In files array, add the path with watched flag like this:


files: [
  { pattern: './node_modules/jquery/dist/jquery.min.js', watched: false },    
  { pattern: './src/test.ts', watched: false }

Karma now should know about the jQuery dependency.




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