how do I change format of Date using javascript?

Question

I want to display date as 18-03-2016 using javascript datepicker.If I didnot mention any format it is displaying as 03-18-2016.How to display like 18-03-2016. this is sample code

Answer 1

Try this

new JsDatePick({
        useMode:2,
        target:"startdate",
        dateFormat:"%d-%m-%Y"
    });

Answer 2

As described here: enter link description here

you can add this

new JsDatePick({
 useMode:2,
 target:"startdate",
 dateFormat:"%Y-%m-%d"
});