Example of how to use arrays in Javascript

Code:

<script type="text/javascript">
	// Create an array of strings
	var customers = new Array(  "Steven",
								"Barbara", 
								"Bill",
								"Carlos",
								"Miriam", 
								"Elena",
								"Tony");

	// Print the content of array
	PrintArray(customers, "initial state");

	// Add some items in the array
	customers = customers.concat("Sara");
	customers = customers.concat("Daisy");
	customers = customers.concat("Daniel");

	// Print the content of array
	PrintArray(customers, "after concat");

	// Reverse the content of the array
	customers.reverse();
	PrintArray(customers, "after reverse");

	// Sort the array
	customers.sort();
	PrintArray(customers, "after sort");

	// Extract the array elements and put them in a variable
	var allCustomers = customers.join(", ");
	document.write("Content of allCustomers (after join) :<br />" + allCustomers + "<br />");

	// Print the content of the array
	function PrintArray( a , t) {
		document.write("Content of array ("+ t +"):<br />");
		for (n = 0; n < a.length; n++) {
			document.write(a[n] + "<br />");
		}
		document.write("<br />");
	}
</script>

Result:

Content of array (initial state):
Steven
Barbara
Bill
Carlos
Miriam
Elena
Tony

Content of array (after concat):
Steven
Barbara
Bill
Carlos
Miriam
Elena
Tony
Sara
Daisy
Daniel

Content of array (after reverse):
Daniel
Daisy
Sara
Tony
Elena
Miriam
Carlos
Bill
Barbara
Steven

Content of array (after sort):
Barbara
Bill
Carlos
Daisy
Daniel
Elena
Miriam
Sara
Steven
Tony

Content of allCustomers (after join):
Barbara, Bill, Carlos, Daisy, Daniel, Elena, Miriam, Sara, Steven, Tony