February 2015
Intermediate to advanced
664 pages
24h 26m
Polish
Content preview from Programowanie w JavaScript Rusz głową!
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jesteś tutaj
119
Przedstawienie funkcji
Swoją drogą, czy wspominaliśmy
już o FUNKCJACH?
Przedstawiamy funkcje. Funkcje w języku JavaScript pozwalają wyodrębnić fragment
kodu, nadać mu nazwę, a następnie odwoływać się do niego wszędzie tam, gdzie jest
to potrzebne. Wygląda na to, że funkcje są spełnieniem naszych potrzeb.
Załóżmy, że piszemy kod, w którym będzie sporo „szczekania”. Jeśli w grę wchodzi
duży pies, ma szczekać „HAU HAU”. Z kolei małe psy szczekają „hau hau”.
Ta podstawowa funkcjonalność szczekania będzie używana wiele razy. Napiszmy
zatem funkcję
bark
, z której będziemy mogli wielokrotnie skorzystać.
function bark(name, weight) {
}
Definicja ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.