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

The isMatch function from the date-fns library is used to check if the given date matches the format specified by the provided pattern.

Here's a sample code snippet showing how to use the isMatch function:

index.tsx
const { isMatch } = require('date-fns');

// Check if given date matches the specified format pattern
const isDateValid = isMatch('2022-12-31', 'yyyy-MM-dd');
console.log(isDateValid); // Outputs: true

// Pattern doesn't match, returns false
const isDateValid2 = isMatch('12/31/2022', 'yyyy-MM-dd');
console.log(isDateValid2); // Outputs: false
346 chars
10 lines

In the above code, we import the isMatch function from date-fns. We then call the isMatch function with the date string '2022-12-31' and the pattern 'yyyy-MM-dd'. Since the date string matches the specified pattern, isMatch returns true.

In the second example, the date string '12/31/2022' doesn't match the specified pattern, which is 'yyyy-MM-dd'. Thus, isMatch returns false.