Moment

moment is a ready-to-use instance of the Moment.js library, made available inside every Shesha form script. Moment.js is a library for parsing, validating, manipulating, and displaying dates and times in JavaScript, so you can work with dates in your script code without needing to import anything yourself.

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Using Moment in Scripts

moment behaves exactly like the moment object you would get from importing the moment npm package directly - it is not a custom wrapper, so the full Moment.js API is available, including parsing dates, formatting them for display, and calculating differences between dates.

note

Shesha currently exposes version 2.25.3 of Moment.js. No custom locale or default format is applied, so moment behaves the same way it would in any other JavaScript project.

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Example

Form type to use: Edit Form - use when you want to calculate a value from a date already loaded onto the form.

Example - Calculate an age from a date of birth field:

const dob = data.dateOfBirth;
if (dob) {
  const age = moment().diff(moment(dob), 'years');
  form.setFieldsValue({ age });
}