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segdeha/get-week-number.js

Created April 15, 2021 16:55
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Return the number of the week (e.g., 16 out of 52 weeks)
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get-week-number.js
function getWeekNumber() {
const now = new Date()
const oneJan = new Date(now.getFullYear(), 0, 1)
const numDays = Math.floor((now - oneJan) / (24 * 60 * 60 * 1000))
return Math.ceil(( now.getDay() + 1 + numDays) / 7)
}
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