formatter.md

id	Format.formatter
type	function(value)

---

shortDescription

A function that converts numeric or date-time values to a string.

param(value): Number | Date

The value to be formatted.

return: String

The value after formatting.

---

If none of the predefined formats meet your requirements, use this function to specify a custom format. If formatter is the only field that you need to specify in the format object, assign the function straight to the format property as shown below.

<!--JavaScript-->format: function (value) {
    // ...
    return formattedValue;
}

[important] If you allow users to edit the formatted value, implement the parser function to convert the value back to a number or date and time.