javascript date first day of current month
var date = new Date();
var firstDay = new Date(date.getFullYear(), date.getMonth(), 1);
var lastDay = new Date(date.getFullYear(), date.getMonth() + 1, 0);javascript date first day of current month
var date = new Date();
var firstDay = new Date(date.getFullYear(), date.getMonth(), 1);
var lastDay = new Date(date.getFullYear(), date.getMonth() + 1, 0);how to calculate first monday of the month in js
function lastDayOfMonth(y,m,dy) {
var days = {sun:0,mon:1,tue:2,wed:3,thu:4,fri:5,sat:6}
,dat = new Date(y+'/'+m+'/1')
,currentmonth = m
,firstday = false;
while (currentmonth === m){
firstday = dat.getDay() === days[dy] || firstday;
dat.setDate(dat.getDate()+(firstday ? 7 : 1));
currentmonth = dat.getMonth()+1 ;
}
dat.setDate(dat.getDate()-7);
return dat;
}
// usage
lastDayOfMonth(2012,2,'tue'); //=>Tue Feb 28 2012 00:00:00 GMT+0100
lastDayOfMonth(1943,5,'fri'); //=>Fri May 28 1943 00:00:00 GMT+0200Copyright © 2021 Codeinu
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