Get date of next 15th in JavaScript
I need a date on the next 15th using this format: 15.06.2015 23:59:59
<strong> Examples:
- So, today 06/03/2015 will be
15.06.2015 23:59:59
. - 12.08.2015 it will be
15.08.2015 23:59:59
- and 18.02.2015 it will be
15.03.2015 23:59:59
I need the result in seconds.
I know how to do this in PHP, but could not get it to work with JavaScript.
Many thanks for the help!
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4 answers
You can try something like
var date = new Date();
//if 15th of current month is over move to next month
//need to check whether to use >= or just > ie on 15th Jun
//if you want 15 Jun then use > else if you want 15 Jul use >=
var dt = date.getDate();
date.setDate(15);
if (dt >= 15) {
date.setMonth(date.getMonth() + 1);
}
date.setHours(23, 59, 59, 0);
document.write(date)
If you need a function that returns a new date object
function setNext15(date) {
var next = new Date(date);
var cache = next.getDate();
next.setDate(15);
if (cache >= 15) {
next.setMonth(date.getMonth() + 1);
}
next.setHours(23, 59, 59, 0);
console.log(next, date);
return next;
}
Demo: Fiddle
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Try using the below code snippet.
<!DOCTYPE html>
<html>
<body>
<p id="demo"></p>
<script>
var d1 = new Date();
if(d1.getDate() > 15)
{
d1.setDate(d1.getDate() + 17);
}
var d2 = new Date(d1.getFullYear(),d1.getMonth(),15,23,59,59,0);
document.getElementById("demo").innerHTML = d2.getDate()+"."+d2.getMonth()+ "." + d2.getFullYear()+ " " + d2.getHours()+":"+ d2.getMinutes() + ":" + d2.getSeconds();
</script>
</body>
</html>
Let me know if you need more information.
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function next15th(d) {
// prevent mutation of original date
var copy = new Date(d.getTime());
if (copy.getDate() >= 15) {
// not in the same month
copy.setMonth(copy.getMonth() + 1);
}
copy.setDate(15);
copy.setHour(23, 59, 59);
return copy;
}
var d = new Date();
console.log(d);
//> Wed Jun 03 2015 09:04:24 GMT+0300 (EEST)
console.log(next15th(d));
//> Mon Jun 15 2015 23:59:59 GMT+0300 (EEST)
console.log(d);
//> Wed Jun 03 2015 09:04:24 GMT+0300 (EEST)
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Given the line:
var dateString = '15.06.2015 23:59:59';
You can get the next 15th using a number of small functions:
// Parse string in format d/m/y h:m:s
function parseDMY(s) {
var b = s.split(/\D/);
return new Date(b[2], b[1]-1, b[0], b[3], b[4], b[5]);
}
// Format date as dd.mm.yyyy hh:mm:ss
function formatDMY(date) {
function z(n){return (n<10?'0':'') + n}
return z(date.getDate()) + '.' + z(date.getMonth()+1) + '.' + date.getFullYear() + ' ' +
z(date.getHours()) + ':' + z(date.getMinutes()) + ':' + z(date.getSeconds());
}
// Set to next 15th
function getNext15th(date) {
if (date.getDate() >= 15) {
date.setMonth(date.getMonth() + 1);
}
date.setDate(15);
return date;
}
// Calling each sequentially
console.log(formatDMY(getNext15th(parseDMY(dateString)))); // 15.07.2015 23:59:59
Or, you can combine it all into one function:
function getNext15th(s) {
function z(n){return (n<10?'0':'') + n}
var b = s.split(/\D/);
var date = new Date(b[2], b[1] - (b[0] >= 15? 0 : 1), 15, b[3], b[4], b[5]);
return z(date.getDate()) + '.' + z(date.getMonth()+1) + '.' + date.getFullYear() + ' ' +
z(date.getHours()) + ':' + z(date.getMinutes()) + ':' + z(date.getSeconds());
}
console.log(getNext15th(dateString)); // 15.07.2015 23:59:59
console.log(getNext15th('15.012.2015 23:59:59')); // 15.01.2016 23:59:59
It depends on how much reuse you want from functions.
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