Update leftTime from method

[DarkPreacher]

Is there any way I can do that?
Since that is a prop — I can't do it without getting Avoid mutating a prop directly since the value will be overwritten whenever the parent component re-renders warning.
Tried to set it with remainingTime — no luck.

[mlinquan]

Do not try to modify any data inside the component. You can use props to modify the data or $emit to receive the corresponding data after the status changes.