ember-number-count-animation

components.count-up.js

import Ember from 'ember';

export default Ember.Component.extend({
  
    
  didInsertElement(){
  	this._super(...arguments);
    /* Ember.run.next(()=>{
       var countup = new CountUp();
    	console.log("run next");
    }, 1000);
    this.runCountAnimation(); */
  },
  didReceiveAttrs(){
  	this._super(...arguments);
    this.runCountAnimation();
  },
  runCountAnimation(){
    var start = this.get("start") || 0;
    var end = this.get("end") || 0;
    var duration = this.get("duration") || 2000;

    var _this = this;
  	var range = end - start;
    // no timer shorter than 50ms (not really visible any way)
    var minTimer = 50;
    // calc step time to show all interediate values
    var stepTime = Math.abs(Math.floor(duration / range));
    
    // never go below minTimer
    stepTime = Math.max(stepTime, minTimer);
    
    // get current time and calculate desired end time
    var startTime = new Date().getTime();
    var endTime = startTime + duration;
    var timer;
  
    function run() {
        var now = new Date().getTime();
        var remaining = Math.max((endTime - now) / duration, 0);
        var value = Math.round(end - (remaining * range));
        _this.set("value", value);
        if (value == end) {
          	_this.set("start", value); 
            clearInterval(timer);
        }
    }
    timer = setInterval(run, stepTime);
    run();
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  value: 20,
  actions: {
  	update(){
      let temp = this.get("value") + Math.floor((Math.random() * 100) + 1);
      this.set("value", temp);
    }
  }
});

templates.application.hbs

{{count-up end=value }}  {{value}}
<button {{action "update"}}> Update  </button>
<br>
<br>
{{outlet}}
<br>
<br>

templates.components.count-up.hbs

{{value}}
{{yield}}

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-data": "3.4.2"
  }
}