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Error creating an instance

importance: 5

Here’s the code with Rabbit extending Animal.

Unfortunately, Rabbit objects can’t be created. What’s wrong? Fix it.

class Animal { constructor(name) { this.name = name; } } class Rabbit extends Animal { constructor(name) { this.name = name; this.created = Date.now(); } } let rabbit = new Rabbit("White Rabbit"); // Error: this is not defined alert(rabbit.name);

That’s because the child constructor must call super().

Here’s the corrected code:

class Animal { constructor(name) { this.name = name; } } class Rabbit extends Animal { constructor(name) { super(name); this.created = Date.now(); } } let rabbit = new Rabbit("White Rabbit"); // ok now alert(rabbit.name); // White Rabbit
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