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Ember
v3.10.0.
You don't need to define a class all at once. You can reopen a class and
define new properties using the
reopen()
method.
Person.reopen({
isPerson: true
});
Person.create().get('isPerson'); // true
When using reopen()
, you can also override existing methods and
call this._super
.
Person.reopen({
// override `say` to add an ! at the end
say(thing) {
this._super(thing + '!');
}
});
reopen()
is used to add instance methods and properties that are shared
across all instances of a class. It does not add
methods and properties to a particular instance of a class as in vanilla JavaScript (without using prototype).
But when you need to add static methods or static properties to the class itself
you can use reopenClass()
.
// add static property to class
Person.reopenClass({
isPerson: false
});
// override property of existing and future Person instances
Person.reopen({
isPerson: true
});
Person.isPerson; // false - because it is static property created by `reopenClass`
Person.create().get('isPerson'); // true