nicht angemeldet
Hallo Michael,
ich habe nicht ganz verstanden, ob bei selbstdefinierten Javascript-Objekten auch Methoden definiert werden können oder nicht.
Das geht. Ich bin mal so frei und gebe dazu einfach die entsprechende Passage aus der JavaScript-Doku von Netscape wieder:
A method is a function associated with an object. You define a method the same way you define a standard function. Then you use the following syntax to associate the function with an existing object:
object.methodname = function_name
where object is an existing object, methodname is the name you are assigning to the method, and function_name is the name of the function.
You can then call the method in the context of the object as follows:
object.methodname(params);
You can define methods for an object type by including a method definition in the object constructor function. For example, you could define a function that would format and display the properties of the previously-defined car objects; for example,
function displayCar() {
var result = "A Beautiful " + this.year + " " + this.make + " " + this.model
pretty_print(result)
}
where pretty_print is the function (defined in "Functions") to display a horizontal rule and a string. Notice the use of this to refer to the object to which the method belongs.
You can make this function a method of car by adding the statement
this.displayCar = displayCar;
to the object definition. So, the full definition of car would now look like
function car(make, model, year, owner) {
this.make = make
this.model = model
this.year = year
this.owner = owner
this.displayCar = displayCar
}
Then you can call the displayCar method for each of the objects as follows:
car1.displayCar()
car2.displayCar()
Hoffe Du kommst damit klar!
Viele Gruesse
Stefan Muenz