Smooth Scroll for web in Vanilla JS

smoothScroll.js

function scrollSmooth(node, time){
	var distance = node.getBoundingClientRect().top,
			step = 10 * distance / time,
			frames = distance / step,
			i = 0,
			run;

	function goTo(){
		window.scrollBy(0, step);
		i++;
		if (i > frames) clearInterval(run);
	}
	run = setInterval(goTo, 10);
}