isDate#

Check if the given value is a Date object.

Usage Scenarios#

• Data Validation: When processing dates from user input or API responses, you need to ensure that a certain value is a Date object before performing date - related operations, such as formatting, comparison, or calculation.
• Function Parameter Validation: In a function where a Date object is expected as a parameter, you can use the isDate method to verify the parameter type, avoiding errors caused by passing non - Date values.
• Conditional Judgment: Execute different logic based on whether a value is a Date object.

Examples#

import { isDate } from 'funtool';

isDate(new Date()); // ✅ true
isDate('2023-01-01'); // ❌ false

Signature#

function isDate(v: any): v is Date

Parameters#

• v (any): The value to test if it is a Date object.

Returns#

• (v is Date): Returns true if the value is a Date object, otherwise returns false.