javascript-prototypes Flashcards
1
Q
What kind of inheritance does the JavaScript programming language use?
A
JS uses prototype-based inheritance
2
Q
What is a prototype in JavaScript?
A
JavaScript prototype is simply an object that contains properties and (predominantly) methods that can be used by other objects.
3
Q
How is it possible to call methods on strings, arrays, and numbers even though those methods don’t actually exist on strings, arrays, and numbers?
A
Due to JS prototypes; models that was created that contain these methods.
4
Q
If an object does not have it’s own property or method by a given key, where does JavaScript look for it?
A
From the object’s prototype, if it’s not there then object’s object’s prototype