March 2021
Intermediate to advanced
608 pages
22h 5m
Polish
Content preview from JavaScript
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Rozdział 3. Typy, wartości i zmienne
Programy komputerowe wykonują operacje na wartościach, na przykład liczbie 3,14 lub ciągu „Witaj, świecie!”. Rodzaje reprezentowanych i przetwarzanych wartości noszą nazwę typów, a jedną z fundamentalnych cech każdego języka programowania jest zestaw dostępnych typów danych. Jeżeli w programie trzeba przechować wartość w celu jej późniejszego wykorzystania, przypisuje się ją zmiennej (lub inaczej — „zapisuje” w niej). Funkcjonowanie zmiennych jest następną fundamentalną cechą każdego języka programowania. W tym rozdziale opisane są typy danych, wartości i zmienne dostępne w języku JavaScript. Zacznijmy od ogólnych informacji i kilku definicji.
3.1. Informacje ogólne i definicje
Dostępne w języku JavaScript ...
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