I have problem with counter up resume function.
for example: if the timer paused at 00:00:03 and then, the next view seconds later (eg: 5 seconds later) I clicked the resume button. It suppose to be continue from 00:00:04. But the timer start from 00:00:08.
I have no idea how to fix this.
here's the codes: https://jsitor.com/pVz84uaY3
it's doing exactly what you wanted, you are always calculating against variable with time started this.diff = Math.abs(today.getTime() - this.actv_date.getTime()); the actv_date
for resume functionality you have to save "time elapsed" and on resume calculate this.actv_date = today.getTime() - timeElapsed to hold original dif