menu.js

/*    JavaScript 7th Edition
      Chapter 3
      Project 03-01

      Application to calculate total order cost
      Author: Professor Richard Krasso
      Date:   11/25/2022

      Filename: menu.js
*/

let menuItems = document.getElementsByClassName("menuItem");

for (let i = 0; i < menuItems.length; i++) 
{
	menuItems[i].addEventListener("click", calcTotal); 
}

function calcTotal() {
	let orderTotal = 0; 

	for (let i = 0; i < menuItems.length; i++) 
	{
		if (menuItems[i].checked) 
		{
			orderTotal += Number(menuItems[i].value)
		}
	}
	document.getElementById("billTotal").innerHTML = formatCurrency(orderTotal);
}

 // Function to display a numeric value as a text string in the format $##.## 
 function formatCurrency(value) {
    return "$" + value.toFixed(2);
 }