drub0y/app.html

## app.html
<template>
  <div>
    <ul class="collection">
      <li class="collection-item">Sent</li>
      <li class="collection-item">Inbox<span md-badge="is-new: true;">3</span></li>
      <li class="collection-item">Spam<span show.bind="spamCount > 0" class="yellow black-text" md-badge="is-new: true; caption.bind: spamCaption">${spamCount}</span></li>
    </ul>
  </div>
  <div class="actions">
    <hr />
    Add/Remove some emails to/from the Spam folder:
    <button md-button="flat: true;" md-waves click.delegate="cleanSomeSpam()"><i class="material-icons">remove</i></button><button md-button="flat: true;" md-waves click.delegate="addSomeSpam()"><i class="material-icons">add</i></button>
  </div>
</template>

## app.js
import {bindable, computedFrom} from 'aurelia-framework';

export class App {
  @bindable spamCount = 131;

  addSomeSpam() {
    this.spamCount += this.getRandomSpamAmount();
  }

  cleanSomeSpam() {
    this.spamCount -= this.getRandomSpamAmount();

    if(this.spamCount < 0) {
      this.spamCount = 0;
    }
  }

  @computedFrom('spamCount')
  get spamCaption() {
    let caption = null;

    if(this.spamCount > 100) {
      caption = "Spam overload!!!";
    } else if(this.spamCount > 80) {
      caption = "Spam level: critical."
    } else if(this.spamCount > 30) {
      caption = "Spam level: concerning";
    }

    return caption;
  }

  getRandomSpamAmount() {
    return Math.floor(Math.random() * 25) + 1;
  }
}

## index.html
<!doctype html>
<html>
  <head>
    <title>Aurelia</title>
    <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
    <meta name="viewport" content="width=device-width, initial-scale=1">
  </head>
  <body aurelia-app="main">
    <h1>Loading...</h1>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.6/system.js"></script>
    <script src="https://rawgit.com/aurelia-ui-toolkits/aurelia-materialize-bundles/0.20.2/config2.js"></script>
    <script>
      System.import('aurelia-bootstrapper');
    </script>
  </body>
</html>

## main.js
/*******************************************************************************
 * The following two lines enable async/await without using babel's
 * "runtime" transformer. Uncomment the lines if you intend to use async/await.
 *
 * More info here:  https://github.com/jdanyow/aurelia-plunker/issues/2
 */
//import regeneratorRuntime from 'babel-runtime/regenerator';
//window.regeneratorRuntime = regeneratorRuntime;
/******************************************************************************/

import 'materialize';

export function configure(aurelia) {
  aurelia.use
    .standardConfiguration()
    .developmentLogging()
    .plugin('aurelia-materialize-bridge', bridge => bridge.useAll() );

  aurelia.start().then(a => a.setRoot());
}
	<template>
	<div>
	<ul class="collection">
	<li class="collection-item">Sent</li>
	<li class="collection-item">Inbox<span md-badge="is-new: true;">3</span></li>
	<li class="collection-item">Spam<span show.bind="spamCount > 0" class="yellow black-text" md-badge="is-new: true; caption.bind: spamCaption">${spamCount}</span></li>
	</ul>
	</div>
	<div class="actions">
	<hr />
	Add/Remove some emails to/from the Spam folder:
	<button md-button="flat: true;" md-waves click.delegate="cleanSomeSpam()"><i class="material-icons">remove</i></button><button md-button="flat: true;" md-waves click.delegate="addSomeSpam()"><i class="material-icons">add</i></button>
	</div>
	</template>
	import {bindable, computedFrom} from 'aurelia-framework';

	export class App {
	@bindable spamCount = 131;

	addSomeSpam() {
	this.spamCount += this.getRandomSpamAmount();
	}

	cleanSomeSpam() {
	this.spamCount -= this.getRandomSpamAmount();

	if(this.spamCount < 0) {
	this.spamCount = 0;
	}
	}

	@computedFrom('spamCount')
	get spamCaption() {
	let caption = null;

	if(this.spamCount > 100) {
	caption = "Spam overload!!!";
	} else if(this.spamCount > 80) {
	caption = "Spam level: critical."
	} else if(this.spamCount > 30) {
	caption = "Spam level: concerning";
	}

	return caption;
	}

	getRandomSpamAmount() {
	return Math.floor(Math.random() * 25) + 1;
	}
	}
	<!doctype html>
	<html>
	<head>
	<title>Aurelia</title>
	<link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	</head>
	<body aurelia-app="main">
	<h1>Loading...</h1>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.6/system.js"></script>
	<script src="https://rawgit.com/aurelia-ui-toolkits/aurelia-materialize-bundles/0.20.2/config2.js"></script>
	<script>
	System.import('aurelia-bootstrapper');
	</script>
	</body>
	</html>
	/*******************************************************************************
	* The following two lines enable async/await without using babel's
	* "runtime" transformer. Uncomment the lines if you intend to use async/await.
	*
	* More info here: https://github.com/jdanyow/aurelia-plunker/issues/2
	*/
	//import regeneratorRuntime from 'babel-runtime/regenerator';
	//window.regeneratorRuntime = regeneratorRuntime;
	/******************************************************************************/

	import 'materialize';

	export function configure(aurelia) {
	aurelia.use
	.standardConfiguration()
	.developmentLogging()
	.plugin('aurelia-materialize-bridge', bridge => bridge.useAll() );

	aurelia.start().then(a => a.setRoot());
	}