February 2015
Intermediate to advanced
664 pages
24h 26m
Polish
Content preview from Programowanie w JavaScript Rusz głową!
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.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.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.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.
jesteś tutaj
241
Zrozumieć obiekty
Zastanawiam się: gdyby ktoś
przekazał mi jakiś obiekt, to czy
mógłbym się w jakiś sposób dowiedzieć,
jakie on ma właściwości?
Jedną z rzeczy, jakie możesz zrobić, jest przejrzenie
właściwości obiektu w pętli. W tym celu musisz
zastosować formę iteracji, której jeszcze nie przedstawiliśmy
w tej książce, czyli pętlę
for in
. Pętla
for in
pobiera
kolejno wszystkie właściwości obiektu, w dowolnej kolejności.
Poniżej pokazaliśmy, w jaki sposób możesz wyświetlić
wszystkie właściwości obiektu
chevy
.
for (var prop in chevy) {
console.log(prop + ”: ” + chevy[prop]);
}
Pętla for in kolejno pobiera właściwości
obiektu, przypisując ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.