Route scroll

components.nav-bar\.js

import Component from '@ember/component';

export default Component.extend({
  didInsertElement() {
   	this._super(...arguments);
    
  }
});

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('my-route', { path: '/' });
  this.route('my-route2');
});

export default Router;

routes.my-route2\.js

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

export default Route.extend({
});

routes.my-route\.js

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

export default Route.extend({
});

styles.app\.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}

.red {
 background-color: rgba(255,0,0,0.5); 
}
.blue {
 background-color: rgba(0,0,255,0.5); 
}
.green {
 background-color: rgba(0,255,0,0.5); 
}

article {
  padding: 20px;
  border-radius: 20px;
}

.navbar {
	position: fixed;
  top: 70px;
  width: 300px;
  border: 2px gray solid;
  padding: 20px;
  background-color: white;
}

templates.application\.hbs

<h1>Route Scrolling Example</h1>
<br>
{{nav-bar}}
<br>
{{outlet}}
<br>
<br>

templates.components.long-list\.hbs

<article class="green">
 <h3>{{title}}</h3>
 <ul>
   <li>{{entry}}</li>
   <li>{{entry}}</li>
   <li>{{entry}}</li>
   <li>{{entry}}</li>
   <li>{{entry}}</li>
   <li>{{entry}}</li>
   <li>{{entry}}</li>
   <li>{{entry}}</li>
   <li>{{entry}}</li>
   <li>{{entry}}</li>
   <li>{{entry}}</li>
   <li>{{entry}}</li>
   <li>{{entry}}</li>
   <li>{{entry}}</li>
   <li>{{entry}}</li>
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   <li>{{entry}}</li>
   <li>{{entry}}</li>
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   <li>{{entry}}</li>
   <li>{{entry}}</li>
   <li>{{entry}}</li>
   <li>{{entry}}</li>
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   <li>{{entry}}</li>
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   <li>{{entry}}</li>
   <li>{{entry}}</li>
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   <li>{{entry}}</li>
   <li>{{entry}}</li>
   <li>{{entry}}</li>
 </ul>
</article>

templates.components.nav-bar\.hbs

<div class="navbar">
  {{#link-to 'my-route'}}First Route{{/link-to}}
  -
  {{#link-to 'my-route2'}}Second Route{{/link-to}}
</div>

templates.my-route2\.hbs

<article class="red">
{{long-list title="Second" entry="Items for second"}}
</article>

templates.my-route\.hbs

<article class="blue">
{{long-list title="First" entry="Items for first"}}
</article>

twiddle\.json

{
  "version": "0.17.0",
  "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/3.3.1/jquery.js",
    "ember": "3.17.0",
    "ember-template-compiler": "3.17.0",
    "ember-testing": "3.17.0"
  },
  "addons": {
    "@glimmer/component": "1.0.0"
  }
}