some functions..

waitfunctions.js

var is_ajaxed = false;

$.ajaxSetup({
	//async: false
});

$(document).ajaxSend(function() {
  console.log( "is_ajaxed." );
  is_ajaxed = true;
});
$(document).ajaxStop(function() {
  console.log( "last is complete." );
  is_ajaxed = false;
});



var queue;
var i = 0;
queue = function() {
	return new Promise(function(resolve, reject) {
		console.log(i);
		i++;
		if (i > 3) {
			resolve(1);
		} else {
			setTimeout(function(){
				queue().then(function(){
					resolve(1);
				});
			}, 2000);
		}
	});
}
function wait() {
	return queue().then(function(aar){
		i = 0;
	});
}

//usage
wait().then(function(){
	console.log('done');
	console.log('blabla');
	wait().then(function(){
		console.log('done2');
	});
});


var i = 0;
function wait2(res) {
	i++;
	console.log(i);
	setTimeout(function(){
		if (i>3) res('wdwdwd');
		else wait2(res);
	}, 2000);	
}
wait2(function(res){alert(res);});


function file_get_contents( url ) {	
	return new Promise(function(resolve, reject) {
		var req = null;
		try { req = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) {
			try { req = new ActiveXObject("Microsoft.XMLHTTP"); } catch (e) {
				try { req = new XMLHttpRequest(); } catch(e) {}
			}
		}
		if (req == null) throw new Error('XMLHttpRequest not supported');

		req.open("POST", url, false);
		req.send(null);
		
		resolve(req.responseText);
	});
}
file_get_contents('url.me').then(function(txt){ alert(txt) });