Is there such thing as a class method in Javascript?
Example of class method in Ruby
class Item
def self.show
puts "Class method show invoked"
end
end
Item.show
2 Answers
Like so
function Item() {
// you can put show method into function
// Item.show = function () {};
}
Item.show = function () {
console.log('Class method show invoked');
}
Item.show();But better use object literal
var Item = {
show: function () {
console.log('Class method show invoked');
}
};
Item.show();
2 Comments
Cyzanfar
What is the most memory efficient?
Felix Kling
@Cyzanfar: That's not necessarily the important question. More important is how you want to organize your code. Do you just want to create a "bag of methods/functions"? Then use an object. Do you really want to create instances of a "class" with a class method? Then use a constructor function (aka "class").
There's many ways to do this, but my personal favorite is:
function Person(name) { // This is the constructor
this.name = name;
this.alive = true;
}
Person.prototype.getName = function() {
return this.name;
}
myHuman = new Person('Bob')
console.log(myHuman.getName())
5 Comments
Patrick Wolf
Isn't this more of an instance method?
Felix Kling
That's not equivalent to the code example in the OP.
Patrick Wolf
humanoid, The getName() function can not be called unless there is an instance of Person. This goes against what the OP was asking for, which was a class method.
class"method" per se, but check out ecmascript6's use of the actualclassdeclaration: github.com/lukehoban/es6features#classes