Running a function every second in Pinescript

Question

I want to call a function every second in pinescript. This function can have an alert. So basically this script would fire an alert every second.

I have tried a security method but it doesn't work.

something like this:

oneSecondInterval() =>
    alert("1s alert")
    1 //just returning value 1 to fulffil the condition that expression in security must return a value.

myvar = request.security(syminfo.tickerid,'1S',oneSecondInterval())

The above code only issues alert at start of the bar and not every second.

Answer 1

This is super unpractical and wouldn't even work.

If your script triggeres more than 15 alerts in 3 minutes, the alerts will automatically stop.

If you want to check if it is a new second, you should use a varip variable but still, your script will be executed on each new tick. If there is no trade activity, it might take a while.

Here is an idea for you:

varip last_second = second(timenow)

is_new_second = second(timenow) != last_second
last_second := is_new_second ? second(timenow) : last_second

Then use is_new_second as a condition to trigger your alert.