.getSeconds()

Called from an instance of the Date class, will return the seconds according to the local time.

myDate.getSeconds();

The return value of getSeconds() will only be an integer number between 0 and 59, meaning seconds.

To determine if the match has ended or still ongoing:

const today = new Date('June 25, 2021 13:41:50');

if (today.getSeconds() > 50) {
  console.log('The match has ended.');
} else {
  console.log('This match is still ongoing.');
}

// Output: This match is still ongoing.