Prevent Default <LinkTo>

controllers.application\.js

import Controller from '@ember/controller';

export default class ApplicationController extends Controller {
  appName = 'Ember Twiddle';

  interceptA(event) {
    event.preventDefault();
    alert('preventDefault should ideally stop this link from proceeding to the example page while still allowing the parent handler to occur.');
  }

	interceptB(event) {
    event.preventDefault();
    event.stopPropagation();
    alert('stopPropagation prevents the page from changing but also blocks the parent handler.');
  }

	track(event) {
    alert('Track the click!');
	}
}

router\.js

import EmberRouter from '@ember/routing/router';
import config from './config/environment';

const Router = EmberRouter.extend({
  location: 'none',
  rootURL: config.rootURL
});

Router.map(function() {
  this.route('example');
});

export default Router;

routes.example\.js

import Route from '@ember/routing/route';

export default Route.extend({
});

templates.application\.hbs

<div {{on 'click' this.track}}>
  <h1>Welcome to {{this.appName}}</h1>
  <LinkTo
    @route="example"
    {{on 'click' this.interceptA}}
  >Example Prevent Default</LinkTo>
  <br>
  <LinkTo
    @route="example"
    {{on 'click' this.interceptB}}
  >Example Stop Propagation</LinkTo>
  <br>
  <br>
  {{outlet}}
  <br>
  <br>
</div>

templates.example\.hbs

<p>This is an example</p>

twiddle\.json

{
  "version": "0.17.1",
  "EmberENV": {
    "FEATURES": {},
    "_TEMPLATE_ONLY_GLIMMER_COMPONENTS": false,
    "_APPLICATION_TEMPLATE_WRAPPER": true,
    "_JQUERY_INTEGRATION": true
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.js",
    "ember": "3.18.1",
    "ember-template-compiler": "3.18.1",
    "ember-testing": "3.18.1"
  },
  "addons": {
    "@glimmer/component": "1.0.0"
  }
}