Polling in the Dom

poll.js

//Event Emitting via polling
var isHovering = false;
var hoverButton = find(button);

setInterval(function(){
	if(!(hoverButton.top < Mouse.y < hoverButton.top+hoverButton.height)){
		if(!isHovering) return;
		isHovering = false;
		return stopAction();
	}
	if(!(hoverButton.left < Mouse.x < hoverButton.left+hoverButton.width)){
		if(!isHovering) return;
		isHovering = false;
		return stopAction();
	}
	if(isHovering) return;
	isHovering = true
	return doAction();
},100);

worker_queue.js

//Worker queue via polling
var jobQueue = [];
var workers = [];

setInterval(function(){
	var l = jobQueue.length;
	while(l--){
		var worker = workers.some(function(worker){
			return !worker.isBusy;
		});
		if(!worker) return;
	}
},100);


//Worker queue via event emitters
var ee = new EventEmitter();

var queued = [];
var available = [];

ee.on("new-job",function(job){
	if(available.length === 0) return queued.push(job);
	available.pop().doWork(job);
});

ee.on("worker-available",function(worker){
	if(queued.length === 0) return available.push(worker);
	worker.doWork(queued.shift());
});