kaliber4

controllers.application\.js

import Controller from '@ember/controller';
import { tracked } from '@glimmer/tracking';
import { action } from '@ember/object';

export default class ApplicationController extends Controller {
  @tracked value = 100000;

  @action change(event) {
    this.value = parseInt(event.target.value, 10);
  }

  get kaliber() {
    if (this.value < 1000) {
      return 0;
    } else if (this.value < 10000) {
      return 1; 
    } else if (this.value < 20000) {
      return 2; 
    } else if (this.value < 30000) {
      return 3;
    } else if (this.value < 40000) {
      return 4; 
    }  else {
      return 5; 
    }
  }
}

templates.application\.hbs

<h1>Welcome to kaliber<span style="color: red;">{{this.kaliber}}</span></h1>

<p>
	Your budget:
  
  {{this.value}} $
  
  <br>
  
  <input
    type="range"
    value={{this.value}}
    min="0"
    max="200000"
    {{on "input" this.change}}
  >
</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"
  }
}