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petergi/JavaScript - date - is weekday.js

Created February 25, 2026 19:19
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Checks if the given date is a weekday.
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JavaScript - date - is weekday.js
Checks if the given date is a weekday.
- Use `Date.prototype.getDay()` to check weekday by using a modulo operator (`%`).
- Omit the argument, `d`, to use the current date as default.
const isWeekday = (d = new Date()) => d.getDay() % 6 !== 0;
isWeekday(); // true (if current date is 2019-07-19)
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