JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://www.snorkl.tv/dev/libs/greensock/TweenMax.min.js"></script>
<script src="http://www.snorkl.tv/dev/libs/greensock/plugins/ColorPropsPlugin.min.js"></script>
<p id="output">0</p>
<button id="increase">increase</button>
<button id="decrease">decrease</button>

JavaScript

TweenPlugin.activate([RoundPropsPlugin]);
var output = $("#output"),
    countIncrement=100,
    countMultiplier=0,
    obj = {
    displayValue:0
    };

function tweenValue(){
    var newValue = countMultiplier * countIncrement;
    TweenMax.to(obj, 1, {displayValue:newValue, roundProps:"displayValue", ease:Expo.easeOut, onUpdate:updateUI});
}

function updateUI() {
    output.html(obj.displayValue);
    }    
    
$("#increase").click(function(){
    countMultiplier++;
    tweenValue();
})
    
$("#decrease").click(function(){
    countMultiplier--;
    tweenValue();
})