February 2015
Intermediate to advanced
664 pages
24h 26m
Polish
Content preview from Programowanie w JavaScript Rusz głową!
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588
Rozdział 13
Wielokrotnie stosowanie zachowań
Ja uważam, że każdy pies
powinien mieć swoją własną
metodę bark, ale to moje
zdanie.
Czy powielanie metod jest poważnym problemem?
Okazuje się, że jest. Ogólnie rzecz biorąc, nie chcemy, by w efekcie budowania
każdej nowej instancji obiektu przy użyciu konstruktora tworzony był nowy zestaw
metod. Powoduje to pogorszenie wydajności działania przeglądarki i niepotrzebnie
zużywa zasoby komputera, co może być bardzo poważnym problemem, zwłaszcza
na urządzeniach mobilnych. A jak się niebawem przekonasz, istnieją bardziej
elastyczne i użyteczne sposoby tworzenia obiektów w języku JavaScript.
Cofnijmy się ...
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