Something like a "Stopwatch" object comes to my mind:
Usage:
var st = new Stopwatch();
st.start(); //Start the stopwatch
// As a test, I use the setTimeout function to delay st.stop();
setTimeout(function (){
st.stop(); // Stop it 5 seconds later...
alert(st.getSeconds());
}, 5000);
Implementation:
function Stopwatch(){
var startTime, endTime, instance = this;
this.start = function (){
startTime = new Date();
};
this.stop = function (){
endTime = new Date();
}
this.clear = function (){
startTime = null;
endTime = null;
}
this.getSeconds = function(){
if (!endTime){
return 0;
}
return Math.round((endTime.getTime() - startTime.getTime()) / 1000);
}
this.getMinutes = function(){
return instance.getSeconds() / 60;
}
this.getHours = function(){
return instance.getSeconds() / 60 / 60;
}
this.getDays = function(){
return instance.getHours() / 24;
}
}
