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#51599

From: Romek
Date: Tue, 17 Nov 2015 14:40

16 lines
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Witam,

język javascript jest mi zupełnie obcy. Pewne potrzebne mi informacje znalazłem bibliotece jQuery. Ponieważ nie rozumiem zapisu proszę o pomoc i wyjaśnienie. W funkcji jest zapis :

jQuery.fn.extend({
	offset: 
[...]
return {
 top: box.top + (win.pageYOffset || docElem.scrollTop)-(docElem.clientTop || 0),
 left: box.left + (win.pageXOffset || docElem.scrollLeft) - (docElem.clientLeft || 0)
[...]


jak jest wartość wyrażenia (win.pageYOffset || docElem.scrollTop) lub (docElem.clientTop || 0). Z dokumentacji JS wynika, że operator OR zwraca wartości TRUE, FALSE i nie mogę tego dopasować do powyższego wyrażenie. Czego nie wiem. Proszę o krótkie wyjaśnienie.

Romek

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