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String.Prototype Example

Description: Illustrates the JavaScript syntax for the String Prototype .

Syntax: object.prototype.name=value – Prototype allows you to add properties and methods to an object

String.Prototype Example Code:

< !DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>String.Prototype</title>
    <script type="text/javascript" >
        //    prototype 	        Allows you to add properties and methods to an object
        //    prototype is available for most objects
        //    Syntax: object.prototype.name=value
        function car(make, model, year) {
            this.make = make;
            this.model = model;
            this.year = year;
        }
 
        var myCar = new car("Toyota", "Corolla", 2002);
        car.prototype.cost = null;
        myCar.cost = 20000;
 
        document.write("myCar.cost: " + myCar.cost);
        document.write("<br />");
 
</script>
</head>
<body>
</body>
 
</html>