OOP Javascript: Inheritance using constructors

gistfile1.txt

function Tool(name, type, use, cost) {
            this.name = name;
            this.type = type;
            this.use = use;
            this.cost = cost;
            //You can also add inherited functions here for everything created using this constructor
            this.useTool = function () {
                        alert("Alright, be careful with that "+this.name+"!");
            }
}
//Important thing to note: constructors are usually capitalized at the beginning. E.g. Tools
var hammer = new Tool("hammer", "manual", "To Nail things", 5);
console.log(hammer);
hammer.useTool();