How to convert date in different format in javascript.

function dateFormat(inputDate, format) {
//parse the input date
const date = new Date(inputDate);

//extract the parts of the date
const day = date.getDate();
const month = date.getMonth() + 1;
const year = date.getFullYear();

//replace the month
format = format.replace("MM", month.toString().padStart(2,"0"));

//replace the year
if (format.indexOf("yyyy") > -1) {
format = format.replace("yyyy", year.toString());
} else if (format.indexOf("yy") > -1) {
format = format.replace("yy", year.toString().substr(2,2));
}

//replace the day
format = format.replace("dd", day.toString().padStart(2,"0"));

return format;
}
console.log('Converted date: '+ dateFormat('12/10/2022', 'dd-MM-yyyy'));

<script type="text/javascript">

$( document ).ready(function() {
var today = new Date();
var dd = String(today.getDate()).padStart(2, '0');
var mm = String(today.getMonth() + 1).padStart(2, '0'); //January is 0!
var yyyy = today.getFullYear();
today = yyyy + '-' + mm + '-' + dd;
today1 = dd + '-' + mm + '-' + yyyy;

var fmdate= today
var month = parseInt(fmdate.substr(5,2));
var day = fmdate.substr(8,2)
var year = fmdate.substr(0,4)
var new_year = year-1;
if(month < 10)
month = '0' + month.toString();
var x=2
totalmonth=parseInt(month)+parseInt(x)
var datefrom = new_year + '-' + month + '-' + day;
//$('#date_35').attr('min', maxDate);


$('#date_from').attr('min',"2018-01-01");
$('#date_from').attr('max',today);

$('#date_to').attr('min',"2018-01-01");
$('#date_to').attr('max',today);

$('#date_from').val(datefrom);
$('#date_to').val(today);


});
</script>