March 2021
Intermediate to advanced
608 pages
22h 5m
Polish
Content preview from JavaScript
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Rozdział 7. Tablice
W tym rozdziale opisane są tablice — fundamentalny typ danych w języku JavaScript i większości języków programowania. Tablica jest uporządkowaną kolekcją wartości, czyli elementów. Każdy element ma swoje miejsce w tablicy oznaczone numerem, czyli indeksem. Tablice w języku JavaScript nie są typowane. Oznacza to, że elementy tablicy mogą być różnych typów, a nawet obiektami i innymi tablicami. Dzięki temu można tworzyć skomplikowane struktury danych, na przykład tablice obiektów lub tablice tablic. Elementy tablicy są indeksowane od zera liczbami 32-bitowymi. Pierwszy element ma indeks równy 0, a największy możliwy indeks jest równy 4 294 967 294 (232–2). Oznacza to, że tablica może się składać z maksymalnie 4 294 967 295 ...
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