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
515
Funkcje anonimowe, zasięg i domknięcia
Funkcje raz jeszcze
Musimy coś wyznać. Nie powiedzieliśmy Ci wszystkiego o funkcjach. Nawet kiedy
zapytałeś o to, na co faktycznie wskazują referencje do funkcji, uprościliśmy nieco
odpowiedź. Powiedzieliśmy coś w stylu: „Na coś, co przypomina skrystalizowaną
funkcję, zawierającą jej blok kodu”.
Teraz jednak nadszedł czas, by wszystko wyjaśnić.
W tym celu przeanalizujemy to, co naprawdę dzieje się podczas wykonywania tego
kodu; zaczniemy od funkcji
whereAreYou
.
justAVar =
"Szara, ... LOKALNA."
function whereAreYou() {
var justAVar = ”Szara, zwyczajna zmienna LOKALNA.”;
function inner() {
return ...
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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.