Dynamic Stamp - last month and year

In a dynamic stamp, I want to print last month / year (mm / yyyy format).

I know this javascript to print current date : event.value = util.printd("dd/mm/yyyy", new Date());

What should I use to get last month + and year ?

If the stamp is used on april 12th 2021, I should get "03 / 2021".

If used on january 5th 2021, I should get "12 / 2020"

Thanks in advance for your help

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Community Expert

You can use this code:

var d = new Date();
d.setDate(1);
d.setMonth(d.getMonth()-1);
event.value = util.printd("mm/yyyy", d);

Participant

Works perfectly, thanks a lot !

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