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lucjan/getWeek.js

Created November 11, 2012 21:47
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Get a week in a year in JavaScript - ISO 8601
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getWeek.js
var getWeek=function(a){var b=new Date(a);return b.setDate(b.getDate()-(a.getDay()+6)%7+3),1+((b-new Date(b.getFullYear(),0,4))/864e5/7+1)|0}
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