SmartCost
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ConstructionCost


			
				
					
						
						
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							<HTML>
<HEAD>
<TITLE>Simple Stack Object Example</TITLE>
<SCRIPT LANGUAGE="JavaScript">
<!-
// This is the constructor for our stack object
// If the "length" instance variable is 0, the stack is empty
function oStack() {
	this.top = null;
	this.length = 0;
	this.isEmpty = oStackIsEmpty;
	this.push = oStackPush;
	this.pop = oStackPop;
	}

// This method tells us if this oStack object is empty
function oStackIsEmpty() {
	if (this.length == 0)
		return true;
	else
		return false;
	}

// This method pushes a new element onto the top of the stack
function oStackPush( newData) {
	// Create the new element
	var newElement = new oStackElement();
	// Add the data to it
	newElement.setData( newData);
	// Put the current top in our next field
	newElement.setNext( this.top);
	// Assign our new element to the top
	this.top = newElement;
	this.length++;
	}
	
// This method pops the top element off of the stack
function oStackPop() {
	// Put old top away for safe keeping
	var oldTop = this.top;
	// Get the new top
	this.top = this.top.getNext();
	this.length-;
	return oldTop;
	}

// This is the constructor for an element in our stack object
// The "data" variable holds our actual data (whatever it may be)
// and the "next" variable holds the oStackElement object that is
// 'underneath' this oStackElement object.
function oStackElement() {
	this.data = 0;
	this.next = null;
	this.setData = oStackElementSetData;
	this.getData = oStackElementGetData;
	this.setNext = oStackElementSetNext;
	this.getNext = oStackElementGetNext;
	}

// This method sets the data field of this oStackElement
function oStackElementSetData( newData) {
	this.data = newData;
	}

// This method returns the data field of this oStackElement
function oStackElementGetData() {
	return this.data;
	}

// This method sets the next field of this oStackElement
function oStackElementSetNext( newNext) {
	this.next = newNext;
	}

// This method returns the next field of this oStackElement
function oStackElementGetNext() {
	return this.next;
	}

// create a new oStack object
var stack1 = new oStack();

// Fill it with something interesting
// In this case, the names of my cats
stack1.push( "Puddin' Head")
stack1.push( "Sunshine")
stack1.push( "Shadow")
stack1.push( "Sassy")
stack1.push( "Toby")
stack1.push( "Sandy")
stack1.push( "Pixie")
stack1.push( "Edi")
stack1.push( "Gizmo")

// Get the number of items in the stack
var numElements = stack1.length;

// Print out the contents of the stack
for (var i = 0; i < numElements; i++)
	document.write( stack1.length + " - " + stack1.pop().getData() 
+ "<br>");
//->
</SCRIPT>
</HEAD>
<BODY>
</BODY>
</HTML>