Check if a date is before another date

Use the less than operator (<) to check if the first date comes before the second one.

const isBeforeDate = (dateA, dateB) => dateA < dateB;


// Example
isBeforeDate(new Date(2010, 10, 20), new Date(2010, 10, 21)); // true

Source

https://www.30secondsofcode.org/js/s/is-before-date