testrequest.js

Request = {
	Dispatch: function(params, callback) {
		setTimeout(function() {
			callback()
		}, params.waitSeconds || 0);
	}
};

function sendRequest(waitSeconds) {
	var timestamp = (new Date()).getTime();

	console.log('sent request ' + timestamp)

	window.lastRequestTimeStamp = timestamp;

	var request = Request.Dispatch({
		waitSeconds: waitSeconds
	}, function(result) {
		if (timestamp == window.lastRequestTimeStamp) {
			//do something
			console.log("success! " + timestamp);
		}
	});
}

setTimeout(function(){
	sendRequest(1000);
}, 10);

setTimeout(function(){
	sendRequest(10);
}, 100);