在组件中添加外部JS文件以使用Angular 2在浏览器中渲染图像

Question

I make a site with Angular 2 and will add a JavaScript file to the component. This script must render the height of some images equal to the height of the window of the browser.

How could I add this script to the component?

The solutions I found on SO or anywhere else, looks like this:

import './home.component.js';

But it's not what I need! I need this in my home.component.ts file:

@Component({
    templateUrl: './home.component.html',
    styleUrls: ['./home.component.scss'],
    jsUrls: ['./home.component.js']
})

or something...

Update 1: In my site I use Angular CLI and TypeScript.

Update 2: You could find my project on GitHub: https://github.com/WatchFriends/Web

Answer 1

This works, and works well:

In the angular-cli.json file, there is a section, "scripts". Add the path to your script in that array (as a double-quoted string).

Here's a frag from that file:

  "mobile": false,
  "styles": [
    "../node_modules/bootstrap/dist/css/bootstrap.css",
    "../node_modules/font-awesome/css/font-awesome.css",
    "styles.css"
  ],
  "scripts": ["./app/my_script.js"],
  "environments": {
    "source": "environments/environment.ts",
    "dev": "environments/environment.ts",
    "prod": "environments/environment.prod.ts"
  }

my_script is this:

function sayHello ( ) {
   console.log ( 'I am saying hello' );
}

Then just call it like you'd expect from anywhere. To beat the annoying "not found" error you may get in your IDE, you can either just do this:

window [ 'sayHello' ] ( );

Or create a utility class that contains a reference to that function, such that you can import the class and call the function as usual (you are basically just providing a framework facade for your "my_script.js" functions).

I tried both, it worked just fine, no errors (you are using ng serve or ng build of course etc).