February 2015
Intermediate to advanced
664 pages
24h 26m
Polish
Content preview from Programowanie w JavaScript Rusz głową!
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630
Rozdział 13
Rozszerzanie wbudowanych zachowań
Stosowanie dziedziczenia do własnych celów…
Rozszerzanie wbudowanych obiektów
Już wiesz, że dodając metody do prototypu, możemy dodawać nowe możliwości
funkcjonalne do wszystkich instancji utworzonych w oparciu o ten prototyp. Dotyczy to
nie tylko naszych własnych obiektów, lecz także obiektów wbudowanych.
W ramach przykładu przyjrzymy się obiektowi
String
— używaliśmy już niektórych metod
tego obiektu, takich jak
substring
. Co trzeba by zrobić, gdybyśmy chcieli utworzyć nową
metodę i udostępnić ją we wszystkich instancjach
String
? Moglibyśmy to zrobić za pomocą
znanej już techniki rozszerzania obiektu ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.