setTimeout模拟interval
/** * @param fn: {Function} // function which to execute * @param timer: {number} // gap time between handle * @param count: {number} // count of execute * **/ function Interval(fn, timer, count) { var interval = function() { if (typeof count === 'undefined' || count-- > 0) { setTimeout(interval, timer); try { fn.call(null); } catch(e) { count = 0; throw e; } } }; setTimeout(interval, timer); } Interval(function() { console.log(1); }, 1000, 5);