Using date picker to add years, months or days

[oivanr]

I am using a date picker to establish a date, with this date I want to add, depending of a radio button value, a year, a month or a two month

I have tried with this
$(‘.quform-field-39_14’).change(function (){
var $datefield = $(‘.quform-field-39_14′);
var fecha = new Date($datefield.val());
var fechaV = calculoFechaVencimiento(fecha,’annio’);
// var fechaVencimiento = new Date(fecha.getFullYear(),11,31);
// var fechaCadena = calculoFechaVencimiento(fecha,’annio’).toISOString().slice(0,10);
var fechaCadena = fechaV.toLocaleDateString(‘en-GB’);
$(‘.quform-field-39_580’).val(fechaCadena);
});

function calculoFechaVencimiento(fecha,periodo){
if (periodo == ‘annio’){
var dia = fecha.getDate();
var mes = fecha.getMonth()+1;
var annio = fecha.getFullYear();
var fechaVencimiento = new Date(annio,mes,dia);
} else if (periodo == ‘bimestre’) {
var fechaVencimiento = new Date(fecha.getFullYear(),fecha.getMonth()+1,fecha.getDate());
} else if (periodo == ‘mes’) {
var fechaVencimiento = new Date(fecha.getFullYear(),fecha.getMonth()+1,fecha.getDate());
}

return fechaVencimiento;

}

The problem is that for example I pick this date: “8/2/2022” (is is day/month/format) the result is “02/09/2022” which seems to convert the d/m/y format to a m/d/y format and is adding 1 day. The original date is february 8th, 2022 (8/2/2022), if I add a month I must get march 8th, 2022 (8/3/2022), but instead I am getting september 2nd, 2022 (9/2/2022).
Thanks in advance for your help

[Ally]

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[oivanr]

Dear Ally,
I made some changes, but your code works perfectly. Thanks a lot
Regards,
Omar

[Author]

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