Reopening Classes and Instances
You don't need to define a class all at once. You can reopen a class and define new properties using the reopen() method.
1 2 3 4 5 | Person.reopen({ isPerson: true});Person.create().get('isPerson'); // true |
When using reopen(), you can also override existing methods and call this._super.
1 2 3 4 5 6 | 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().
1 2 3 4 5 6 7 8 9 10 11 | // add static property to classPerson.reopenClass({ isPerson: false});// override property of Person instancePerson.reopen({ isPerson: true});Person.isPerson; // false - because it is static property created by `reopenClass`Person.create().get('isPerson'); // true |
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