June 2008
Beginner to intermediate
160 pages
4h 48m
Polish
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Rozdział 8. Reguła 6. Umieszczanie skryptów na końcu dokumentu
W Rozdział 7. opisano, jak umieszczenie na końcu dokumentu funkcji dołączających arkusze stylów uniemożliwia progresywne generowanie strony, a ich przeniesienie do sekcji head rozwiązuje problem. Skrypty (czyli zewnętrzne pliki JavaScript) sprawiają podobny problem, ale rozwiązanie jest zupełnie odmienne — polecenia dołączające skrypty najlepiej przenieść z początku na koniec dokumentu (o ile to możliwe). Nie tylko zachowuje się progresywne generowanie strony, ale też osiąga się lepszą wydajność podczas wczytywania jej elementów. W pierwszej kolejności przyjrzymy się problemom.
Problemy związane ze skryptami
Najlepszym sposobem zademonstrowania problemów związanych ze skryptami jest ...
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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.