3cp/index.html

## index.html
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>Dumber Gist</title>
  <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1.0, user-scalable=no">
  <base href="/">
</head>
<!--
Dumber Gist uses dumber bundler, the default bundle file
is /dist/entry-bundle.js.
The starting module is pointed to "main" (data-main attribute on script)
which is your src/main.js.
-->
<body>
  <my-app></my-app>
  <script src="/dist/entry-bundle.js" data-main="main"></script>
</body>
</html>

## package.json
{
  "dependencies": {
    "aurelia": "dev"
  }
}

## src\main.js
import Aurelia from 'aurelia';
import { MyApp } from './my-app';

Aurelia.app(MyApp).start();

## src\my-app.html
<template>
  <require from="./my-component"></require>
  <p>
    <button type="button" click.delegate="showComponent = true">Show Component</button>
  </p>
  <div repeat.for="i of 200">
    <div>
    <my-component if.bind="showComponent"
                  xy.bind="i"></my-component>
    </div>
  </div>
</template>

## src\my-app.js
export class MyApp {
  showComponent = false;
}

## src\my-component.html
<template>
  <div ref="divElement" style.bind="{ color: value ? '#333' : '#999' }">${value}</div>
</template>

## src\my-component.js
import { bindable } from 'aurelia';

export class MyComponent {
  @bindable xy;
  value = '';
  divElement;

  bound()
  {
    this.value = 'item-' + this.xy;
  }

  attached()
  {
    setTimeout(() => {
      // console.log(this.divElement.innerHTML);
      // The innerHTML in aurelia2 starts with <!--au-start--><!--au-end-->item-
      this.divElement.style.backgroundColor = this.divElement.innerHTML.includes('item')
        ? '#0a0'
        : '#a00';
    }, 50);
  }
}
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>Dumber Gist</title>
	<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1.0, user-scalable=no">
	<base href="/">
	</head>
	<!--
	Dumber Gist uses dumber bundler, the default bundle file
	is /dist/entry-bundle.js.
	The starting module is pointed to "main" (data-main attribute on script)
	which is your src/main.js.
	-->
	<body>
	<my-app></my-app>
	<script src="/dist/entry-bundle.js" data-main="main"></script>
	</body>
	</html>
	import Aurelia from 'aurelia';
	import { MyApp } from './my-app';

	Aurelia.app(MyApp).start();
	<template>
	<require from="./my-component"></require>
	<p>
	<button type="button" click.delegate="showComponent = true">Show Component</button>
	</p>
	<div repeat.for="i of 200">
	<div>
	<my-component if.bind="showComponent"
	xy.bind="i"></my-component>
	</div>
	</div>
	</template>
	<template>
	<div ref="divElement" style.bind="{ color: value ? '#333' : '#999' }">${value}</div>
	</template>
	import { bindable } from 'aurelia';

	export class MyComponent {
	@bindable xy;
	value = '';
	divElement;

	bound()
	{
	this.value = 'item-' + this.xy;
	}

	attached()
	{
	setTimeout(() => {
	// console.log(this.divElement.innerHTML);
	// The innerHTML in aurelia2 starts with <!--au-start--><!--au-end-->item-
	this.divElement.style.backgroundColor = this.divElement.innerHTML.includes('item')
	? '#0a0'
	: '#a00';
	}, 50);
	}
	}