When I read JavaScript The Definitive Guide, section 9.3, I encountered this:
Class methods
These are methods that are associated with the class rather than with instances.
How do I implement class methods in JavaScript?
-
If, by "class" you mean constructor function, then yes, just define methods on the constructor.Šime Vidas– Šime Vidas2012-12-11 15:38:17 +00:00Commented Dec 11, 2012 at 15:38
-
So, what does the term "class" refer to?Bergi– Bergi2012-12-11 15:38:51 +00:00Commented Dec 11, 2012 at 15:38
-
@Šime Vidas: Not on the constructor, on the constructor prototype.Ryan Lynch– Ryan Lynch2012-12-11 15:39:22 +00:00Commented Dec 11, 2012 at 15:39
-
Probably a duplicate of this question: stackoverflow.com/questions/4305578/…AlexStack– AlexStack2012-12-11 15:39:42 +00:00Commented Dec 11, 2012 at 15:39
-
@RyanLynch Methods defined on the constructor's prototype are not class methods, but instance methods. OP is asking about class methods, not instance methods.Šime Vidas– Šime Vidas2012-12-11 15:40:05 +00:00Commented Dec 11, 2012 at 15:40
|
Show 1 more comment
1 Answer
You can just create a function as a property of another function:
function MyClass() {
}
MyClass.someFunction = function() { };
1 Comment
HJ05
Since JavaScript currently doesn't have a true OOP model the above is the equivalent of a static or class method, static or class properties can be defined in a similar fashon MyClass.someProperty = "myValue"; On a similar note instance methods are defined on the prototype property of objects so MyClass.prototype.someFunction = function() { }; is an instance method and MyClass.prototype.SomeProperty = "someValue"; is an instance property. These aren't the only ways to declare these types of functions and properties you can search for Object Oriented JavaScript to find more examples.