Script: LastMonth

This script gets the name of the previous calendar month.

It is a special case of the community script DateOffset that does the same with:

[[SCRIPT=DateOffset|0|-1|monthname]]

Script

const months = ["December", "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November"];

var date = new Date();

return months[date.getMonth()];

Usage

Here's one example, in the event you are self-employed and bill your clients monthly:

Please find an invoice for [[SCRIPT=LastMonth]] attached.

would resolve to:

Please find an invoice for February attached.

French variants

I also have a French variant of this script which essentially replaces "December" with "décembre" and so on, and a "French possessive" variant which instead uses "de décembre" (in order to account for contractions in months that begin with a vowel, e.g. "d'avril").