returning an array from a function.. javascript

sonesay · 06-07-2004, 03:58 AM

Hey I'm making an array and trying to return it from a function.. i dont know how... can someone help me please....

Code:

<html>
<head>
<title> </title>

<script language="javascript">

function uni(name,city,studNum) {

	this.name = name;
	this.city = city;
	this.studNum = studNum;
}

function initialise() {

	var University = new Array();
	
	University[0] = new uni("Victoria Univeristy","Wellington","16000");
	University[1] = new uni("University of Canterbury","Christchurch","12500");
	University[2] = new uni("Otago Univeristy","Dunedin","17000");
	University[3] = new uni("Auckland Univeristy","Auckland","26000");
	
	return University;	
}

function display() {

	for (var i=0; i < University.length; i++) {
		document.write("Name: "+University[i].name+"<br>");
		document.write("City: "+University[i].city+"<br>");
		document.write("Enrollment: "+University[i].studNum+"<br>");
	}

}

</script>
</head>
<body>
<script language="javascript">

initialise();

display();


</script>
</body>
</html>

I'm getting an error at the for loop when I'm usiing "University.length" it says "University" is not defined.. I think my array function is not returing the array.. i cant figure it out.

sonesay · 06-07-2004, 05:28 AM

ok i've got ti to work but still unsure about correct way of returning and using arrays from a function.. heres what i changed.

Code:

<html>
<head>
<title>Univeristy Arrays</title>
<script language="javascript">

function uni(name,city,studNum) {

	this.name = name;
	this.city = city;
	this.studNum = studNum;
}

function initialise() {

	var University = new Array();
	
	University[0] = new uni("Victoria Univeristy","Wellington","16000");
	University[1] = new uni("University of Canterbury","Christchurch","12500");
	University[2] = new uni("Otago Univeristy","Dunedin","17000");
	University[3] = new uni("Auckland Univeristy","Auckland","26000");
	
	return University;	
}

function display(thisArray) {

	for (var i=0; i < thisArray.length; i++) {
		document.write("Name: "+thisArray[i].name+"<br>");
		document.write("City: "+thisArray[i].city+"<br>");
		document.write("Enrollment: "+thisArray[i].studNum+"<br><br>");
	}

}
</script>
</head>
<body>
<script language="javascript">

var x;

x = initialise();

display(x);
</script>
</body>
</html>

Is this a good/correct way to catch a return from an array and use it? I've only been learning to program for a few months now.. is it the similar in any other language to do what i am doing?