javascript parse time (minutes:seconds) from milliseconds

Question

How to parse a given amount of milliseconds (e.g. 125230.41294642858) into a time format like: minutes:seconds?

Answer 1

Number.prototype.toTime = function(){
     var self = this/1000;
     var min = (self) << 0;
     var sec = (self*60) % 60;
     if (sec == 0) sec = '00';

     return min + ':' + sec
};


var ms = (new Number('250')).toTime();
console.log(ms);
=> '0:15'

var ms = (new Number('10500')).toTime();
console.log(ms);
=> '10:30'