js setinterval срещу settimeout
var intervalID = setInterval(alert, 1000); // Will alert every second.
// clearInterval(intervalID); // Will clear the timer.
setTimeout(alert, 1000); // Will alert once, after a second.
интервал javascript определен брой пъти
// This will be repeated 5 times with 1 second intervals:
setIntervalX(function () {
// Your logic here
}, 1000, 5);