February 2015
Intermediate to advanced
664 pages
24h 26m
Polish
Content preview from Programowanie w JavaScript Rusz głową!
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Rozdział 3.
Zasięg zmiennych
Mógłbym przysiąc,
że zmienna była tuż za mną,
ale kiedy się obróciłem,
już znikła…
Krótkie życie zmiennych
Kiedy jesteś zmienną, pracujesz ciężko, a Twoje
życie może być krótkie. No chyba że jesteś zmienną
globalną, ale nawet ich życie jest ograniczone. Jakie
czynniki ograniczają życie zmiennych? Można to
sobie wyobrazić w następujący sposób.
Zmienne globalne istnieją tak długo, jak
długo istnieje strona.
Zmienna globalna zostaje
powołana do życia, w momencie gdy strona wczyta
kod JavaScript, który ją deklaruje. Jednak życie
takiej zmiennej globalnej kończy się, kiedy strona
zostanie usunięta z przeglądarki. Jeśli ...
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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.