Load JS file on page // Aurelia (CLI/RequireJS)

example.js

export class MyClass

  activate(params, routeConfig, navigationInstruction) {
    if (!document.querySelector('script#stripe-source')) {
      let sc = document.createElement('script');
      sc.setAttribute('id', 'stripe-source');
      sc.async = true;
      sc.setAttribute('src', 'https://js.stripe.com/v2/');
      document.body.appendChild(sc);
    }
  }

  deactivate() {
    let spriteScript = document.querySelector('script#stripe-source');
    if (spriteScript) {
      spriteScript.remove();
    }
  }

}