tock.min.js

var Tock=function(options){Tock.instances=(Tock.instances||0)+1;var go=false,interval=options.interval||10,countdown=options.countdown||false,start_time=0,pause_time=0,final_time=0,duration_ms=0,time=0,elapsed=0,callback=options.callback,complete=options.complete,prefix="Tock"+Tock.instances;function reset(){if(countdown){return false}stop();start_time=0;time=0;elapsed="0.0"}function start(time){start_time=time;if(countdown){_startCountdown(time)}else{_startTimer(0)}}function _tick(){time+=interval;elapsed=Math.floor(time/interval)/10;if(Math.round(elapsed)===elapsed){elapsed+=".0"}var t=this,diff=Date.now()-start_time-time,next_interval_in=interval-diff;if(callback!==undefined){callback(this)}if(countdown&&duration_ms-time<0){final_time=0;go=false;complete()}if(next_interval_in<=0){missed_ticks=Math.floor(Math.abs(next_interval_in)/interval);time+=missed_ticks*interval;if(go){_tick()}}else{if(go){timeout=window.setTimeout(_tick,next_interval_in);timeout=prefix+timeout}}}function stop(){go=false;window.clearTimeout(timeout.replace(prefix));if(countdown){final_time=duration_ms-time}else{final_time=Date.now()-start_time}}function pause(){if(go){pause_time=lap();stop()}else{if(pause_time){if(countdown){_startCountdown(pause_time)}else{_startTimer(pause_time)}}}}function lap(){if(go){var now;if(countdown){now=duration_ms-(Date.now()-start_time)}else{now=Date.now()-start_time}return now}return pause_time||final_time}function msToTime(ms){if(ms<=0){return"00:00.000"}var milliseconds=(ms%1e3).toString(),seconds=Math.floor(ms/1e3%60).toString(),minutes=Math.floor(ms/(60*1e3)%60).toString();if(milliseconds.length===1){milliseconds="00"+milliseconds}else if(milliseconds.length===2){milliseconds="0"+milliseconds}if(seconds.length===1){seconds="0"+seconds}if(minutes.length===1){minutes="0"+minutes}return minutes+":"+seconds+"."+milliseconds}function timeToMS(time){var ms=new Date(time).getTime();if(!ms){var time_split=time.split(":");ms=parseInt(time_split[0],10)*6e4;if(time_split.length>1){ms+=parseInt(time_split[1],10)*1e3}if(time_split.length>2){ms+=parseInt(time_split[2],10)}}return ms}function _startCountdown(duration){duration_ms=duration;start_time=Date.now();end_time=start_time+duration_ms;time=0;elapsed="0.0";go=true;_tick();this.timeout=window.setTimeout(_tick,interval)}function _startTimer(start_offset){start_time=Date.now()-start_offset;time=0;elapsed="0.0";go=true;_tick();this.timeout=window.setTimeout(_tick,interval)}return{start:start,pause:pause,stop:stop,reset:reset,lap:lap,msToTime:msToTime,timeToMS:timeToMS}};