javascript-prototypes Flashcards

1
Q

What kind of inheritance does the JavaScript programming language use?

A

JS uses prototype-based inheritance

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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.

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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.

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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

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