<a href="#" id="dupMe">click</a>
<div id="template">
input-text <input type="text" value="text1" id="txt" />
date time picker <input type="text" id="example" value="(add date)" />
</div>

$("a#dupMe").click(function(event){
    event.preventDefault();
    i++;
    var a = $("#template").clone(true).insertBefore("#template").hide().fadeIn(1000);
    a.find("input#txt").attr('value', i);
    a.find("input#example").datepicker();
});

$('#template #example').datepicker();
$("#template #txt").click(function() { alert($(this).val()); });

function makeDatePickers() {
    $("#template input[type=text]").datepicker();
}

<input type="text" id="BeginDate" class="calendar" />
<input type="text" id="EndDate" class="calendar" />

$('.calendar').datepicker();

$('#addaddress').click(function() {
	var count = $('.address_template').size();
	var html = $('.address_template').eq(0).html();
	$('#addaddress').before('<div class="address_template">' + html + '</div>');
	$('.address_template H1').eq(count).html("Previous Address " + count);
	$('.address_date').eq(count).attr("class","address_date");
	$('.address_date').eq(count).attr("id","movein" + count);
	$("#movein" + count).datepicker();
});

var clonedObject = this.el.find('.jLo:last-child')
clonedObject.find('input.ui-datepicker').each(function(index, element) {
    $(element).removeClass('hasDatepicker');
    $(element).datepicker();
});
clonedObject.appendTo('.jLo');