Exploring Angular 2: Integrating External Libraries

As a beginner in Angular and Angular 2, I am interested in incorporating an external library into my project. The library can be found at the following link:

In order to use this library, I added the following line to my index.html file before angular:

<script src="./lib/angular-canvas-area-draw.js"></script>

However, upon implementation, I encountered the following error:

Uncaught ReferenceError: angular is not defined
at angular-canvas-area-draw.js:3
at angular-canvas-area-draw.js:234

What steps should I take to resolve this issue?

javascriptangulartypescript

Answer №1

If you are attempting to incorporate an AngularJs plugin into an Angular application based on your tags, it may not work smoothly. It could be challenging to make it function correctly without using the upgrade adapter and possibly performing some zonejs modifications. In this case, consider finding a plugin designed explicitly for Angular.

However, if the tags are misleading and you are actually working with AngularJs instead of Angular, ensure that AngularJs is included prior to adding the plugin.

<script type="text/javascript" src="./lib/angular.min.js"></script>
<script src="./lib/angular-canvas-area-draw.js"></script>

Answer №2

To organize your dependencies, place them within the .angular-cli.json file under scripts section as shown below:

 "scripts": [
        ....,
        "./lib/angular-canvas-area-draw.js"
      ],

With the latest Angular CLI, ensure to include all external files (CSS and JS) within the script and style tags in the angular-cli.json file.

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