Like setInterval, but only sets the interval if the delay value is positive.
Browsers treat non-positive delay values as 0, which means the interval will
run immediately (basically all the time). Instead of allowing this behavior,
this function will not set the interval instead. This allows the interval to
be disabled by setting the delay value to <= 0 (or a large enough value that
it overflows to negative), which is useful for user-configurable intervals.
Parameters
func: TimerHandler
the callback function to call
Optionaldelay: number
the interval delay in milliseconds
...args: any[]
the arguments to pass to the callback function
Returns null|number
the interval ID if the interval is valid, otherwise null
Like
setInterval, but only sets the interval if thedelayvalue is positive.Browsers treat non-positive
delayvalues as 0, which means the interval will run immediately (basically all the time). Instead of allowing this behavior, this function will not set the interval instead. This allows the interval to be disabled by setting thedelayvalue to <= 0 (or a large enough value that it overflows to negative), which is useful for user-configurable intervals.