How to change the datepicker date value on click of submit button

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jQuery

MVC4

I have a datepicker textbox and submit button.The datepicker textbox defaultly shows the todays date.On click of submit button, I would like to set another date in datepicker textbox using Jquery.

It seems the jquery function working is fine.I am able to change the date.But It is automatically changing the date to default date which is in the datepicker textbox(inital value).

Please help!

What I have tried:

JQuery

function ValidateDate() {
    var sDate = $('#ScheduledDate').val();
    var sDateTo = $('#ScheduledDateTo').val();

   
    if (sDate == undefined || sDate == '') {
        alert("Please enter Scheduled Date.");
        return false;
    }
    else {
        
        var todaydate = $('#ScheduledDate').val();
        $('#ScheduledDateTo').datepicker('setDate', todaydate);
        return true;
    }

        
}

.cshtml