Плавное увеличение цифры

by AJIEKCEU

HTML

<div id="num"></div>

JavaScript

$('#num').animate({ num: 5000/* - начало */ }, {
    duration: 1000,
    step: function (num){
    		var s1 = (num).toFixed(0);
    		this.innerHTML = (s1+'').replace(/(\d)(?=(\d\d\d)+([^\d]|$))/g, '$1 ')
        
    }
});