JSFiddle - React, Tailwind, and code Playground

by huppen

JavaScript

function converToMinutes(s) {
    var c = s.split(':');
    return parseInt(c[0]) * 60 + parseInt(c[1]);
}

function parseTime(s) {
    return Math.floor(parseInt(s) / 60) + ":" + parseInt(s) % 60
}
//var minutes = parseTime(EndTIme) - parseTime(StartTime);

var endTime = 5;
var startTime = converToMinutes('8:38');
var converted = parseTime(startTime - endTime);
alert(converted)