date.isValid()

The isValid instance method checks whether the current NepaliDate instance contains valid calendar values and falls within the supported range of 1976 through 2100 BS. It verifies that year, month, and day coordinates correspond to an authentic historical date.

ImportCopy Anchor Link

import { NepaliDate } from "nepali-date-library";

SignatureCopy Anchor Link

isValid(): boolean;

ParametersCopy Anchor Link

This method does not take any parameters.

Return ValueCopy Anchor Link

• Type: boolean
• Returns true if the instance's year, month, and day are valid within the Bikram Sambat calendar data (1976 BS to 2100 BS); otherwise returns false.

ExamplesCopy Anchor Link

Validating Instance DatesCopy Anchor Link

import { NepaliDate } from "nepali-date-library";

const date = new NepaliDate("2081-01-15");
console.log(date.isValid()); // true

Checking Post-Mutation ValidityCopy Anchor Link

import { NepaliDate } from "nepali-date-library";

const date = new NepaliDate("2081-01-01");
console.log(date.isValid()); // true

RelatedCopy Anchor Link

• NepaliDate.isValid(): Static validation helper taking numeric year, month, and day.
• date.daysInMonth(): Total days in the month.