Need Help With AJAX/JavaScript: with Variables and String Concatenization

JavaScript
1

Hello I need to take the variable hours and split it into hours and minutes and concatenate the variables as strings. I have done so in Java, I am just not sure how to manipulate this script:

javascript/AJAX

function updateDistances(item) {
	try {
		var prev = $($(item).prevAll('li:not(.show_placeholder):first'));
		
		if (prev != undefined && !$(prev).hasClass('temp_placeholder')) {
			calcRoute(prev, $(item));
		}
	} catch(e) {
		log(e);
	}
	
	try {
		var next = $($(item).nextAll('li:not(.show_placeholder):first'));
		if (next == undefined || $(next).hasClass('temp_placeholder')) {
			$($(item).find('span.drive_time')[0]).text(hours.toString().substring(0, 4) + ' h' + ' :' + ' m');
			
			
			$($(item).find('span.drive_miles')[0]).text('0.0 mi');
			$(item).find('select.transfer').val('');
		} else {
			calcRoute($(item), next);
		}
	} catch(e) {
		log(e);
	}
}

It was done in the Java file, but I cannot figure out how to do it with the Javascript / AJAX above.

Java file:

HtmlElement span = new HtmlElement(SPAN_OPEN, SPAN_CLOSE);
		span.setValue("Drive Time: ");
		td.addNestedElement(span);
		
		HtmlElement span2 = new HtmlElement(SPAN_OPEN, SPAN_CLOSE);
		span2.addAttribute("class", "drive_time");
		double TransferHours = showSet.getTransferHours();
		int hours = (int) TransferHours;
		int minutes = (int) ((TransferHours - hours) * 60);
           String s = hours + ":" + minutes;
           s = s.replace('.', ':');
           s = s + " " + "h:m";
		   span2.setValue(s);
		   System.out.println(s);

		
		td.addNestedElement(span2);		
		tr.addNestedElement(td);
		
		return tr;