backbone.jsHow do I call a parent method using Backbone.js?
Backbone.js provides a way to call a parent method using the __super__
property. __super__
is a reference to the parent object and can be used to access its methods.
For example, if we have a parent class with a sayHello()
method and a child class that extends the parent class, we can call the sayHello()
method from the child class using __super__
like this:
class Parent {
sayHello() {
console.log('Hello from the parent class');
}
}
class Child extends Parent {
sayHello() {
// Call the parent method
this.__super__.sayHello();
console.log('Hello from the child class');
}
}
const child = new Child();
child.sayHello();
The output of the code above would be:
Hello from the parent class
Hello from the child class
The __super__
property can also be used to access the parent object's attributes.
Code explanation
class Parent { ... }
- This is the parent class that contains thesayHello()
method.class Child extends Parent { ... }
- This is the child class that extends the parent class.this.__super__.sayHello();
- This is how we call the parent'ssayHello()
method from the child class.const child = new Child();
- This is how we create an instance of the child class.child.sayHello();
- This is how we call thesayHello()
method on the child instance.
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See more codes...