Use prototype to add properties to an object : prototype : Object Oriented JAVASCRIPT TUTORIALS

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Use prototype to add properties to an object



<html>
<head>
<title>Example</title>
</head>
<body>
<script type="text/javascript">
function Car() {
}

Car.prototype.color = "red";
Car.prototype.doors = 4;
Car.prototype.mpg = 23;
Car.prototype.drivers = new Array("A", "B");
Car.prototype.showColor = function () {
    alert(this.color);
};

var oCar1 = new Car();
var oCar2 = new Car();

oCar1.drivers.push("C");

document.write(oCar1.drivers);
document.write("<br>");
document.write(oCar2.drivers);


</script>

</body>
</html>