I need to create a second function that will subtract recorded time from this in seconds. Currently, this function will display time as event_time: 02:24:25 which is great, I just need to take my recorded time in seconds e.g. 85 seconds and subtract from this value.
so if DateTimeFun is 02:24:25 and recordedTime = 60, the new function would return 02:23:25, subtracting 1 minute.
let recordedTime = parseInt(inputData.new_value) - parseInt(inputData.previous_value);
let dateTimeFun = function (d) {
let h = d.getHours();
let m = d.getMinutes();
let s = d.getSeconds();
if (h < 10) h = '0' + h;
if (m < 10) m = '0' + m;
if (s < 10) s = '0' + s;
return h + ':' + m + ':' + s;
}
A simple function to subtract seconds from a date:
let subtractSeconds = (d1, seconds) => {
console.log(d1);
const ms = d1.getTime();
const ms2 = ms - seconds * 1000;
const d2 = new Date(ms2);
console.log(d2);
return d2;
};
subtractSeconds(new Date(), 100);
So assuming d is a date, you can do:
dateTimeFun(subtractSeconds(d, secondsToSubtract));
const subtract = (JSDate, seconds) => new Date(JSDate - (seconds * 1000))
const now = new Date();
const date = subtract(now, 10);
console.log(now); // Thu Jan 27 2022 00:27:29 GMT-0300 (Uruguay Standard Time)
console.log(date); // Thu Jan 27 2022 00:27:19 GMT-0300 (Uruguay Standard Time)