how to use the isdate function from date-fns in javascript

The isDate function from date-fns is used to check whether a value is a valid Date object or not. To use the isDate function, follow these steps:

1. Install the date-fns package via npm or yarn:

npm install date-fns

# or

yarn add date-fns
46 chars
6 lines

2. Import the isDate function:

index.tsx
import { isDate } from 'date-fns';
35 chars
2 lines

3. Use the isDate function to check whether a value is a valid Date object or not:

index.tsx
const date = new Date();

if(isDate(date)) {
  console.log('Valid Date object');
} else {
  console.log('Invalid Date object');
}

const dateString = '2022-01-01';

if(isDate(dateString)) {
  console.log('Valid Date object');
} else {
  console.log('Invalid Date object');
}
275 chars
16 lines

In the example above, isDate is used to check whether date and dateString are valid Date objects. The first check will output "Valid Date object", while the second check will output "Invalid Date object", since dateString is a string, not a Date object.