{"id":89848,"date":"2020-07-26T19:42:13","date_gmt":"2020-07-26T17:42:13","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-chrome-dobavlena-podderzhka-otlozhennoj-zagruzki-iframe-blokov"},"modified":"2020-07-26T19:42:13","modified_gmt":"2020-07-26T17:42:13","slug":"v-chrome-dobavlena-podderzhka-otlozhennoj-zagruzki-iframe-blokov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/v-chrome-dobavlena-podderzhka-otlozhennoj-zagruzki-iframe-blokov","title":{"rendered":"V Chrom s\u00fa podporovan\u00e9 oneskoren\u00e9 na\u010d\u00edtania iframe blokov","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V\u00fdvoj\u00e1ri prehliada\u010da Chrome ozn\u00e1mili<\/a><\/noindex> o roz\u0161\u00edren\u00ed n\u00e1strojov pre oneskoren\u00e9 na\u010d\u00edtanie prvkov webov\u00fdch str\u00e1nok, ktor\u00e9 umo\u017e\u0148uj\u00fa nenahr\u00e1va\u0165 obsah nach\u00e1dzaj\u00faci sa mimo vidite\u013enej oblasti, k\u00fdm pou\u017e\u00edvate\u013e neprejde str\u00e1nku na miesto tesne pred prvkom. Predt\u00fdm v Chrome 76 a Firefox 75 bola t\u00e1to funkcia u\u017e implementovan\u00e1 pre obr\u00e1zky. Teraz v\u00fdvoj\u00e1ri Chrome urobili \u010fal\u0161\u00ed krok a pridali mo\u017enos\u0165 oneskoren\u00e9ho na\u010d\u00edtania blokov iframe.<\/p>\n

Na riadenie oneskorenej na\u010d\u00edtania str\u00e1nok bol do tagu pridan\u00fd atrib\u00fat 'loading', ktor\u00fd m\u00f4\u017ee nadob\u00fada\u0165 hodnoty 'lazy' (oneskori\u0165 na\u010d\u00edtanie), 'eager' (nahr\u00e1va\u0165 okam\u017eite) a 'auto' (oneskori\u0165 na\u010d\u00edtanie pod\u013ea uv\u00e1\u017eenia prehliada\u010da, pri zapnut\u00ed re\u017eimu Lite<\/a><\/noindex>). Predpoklad\u00e1 sa, \u017ee oneskoren\u00e9 na\u010d\u00edtanie umo\u017en\u00ed zn\u00ed\u017ei\u0165 spotrebu pam\u00e4te, zn\u00ed\u017ei\u0165 prev\u00e1dzku a zv\u00fd\u0161i\u0165 r\u00fdchlos\u0165 po\u010diato\u010dn\u00e9ho na\u010d\u00edtania str\u00e1nok. Napr\u00edklad pri zapnut\u00ed nov\u00e9ho re\u017eimu prestan\u00fa okam\u017eite na\u010d\u00edta\u0165 bloky s reklamou a widgetmi Twitter, Facebook a YouTube, ak nie s\u00fa vidite\u013en\u00e9 pre pou\u017e\u00edvate\u013ea, k\u00fdm pou\u017e\u00edvate\u013e neprejde str\u00e1nku na poz\u00edciu pred t\u00fdmito blokmi. <\/p>\n

\"V<\/a><\/noindex><\/center><\/p>\n

Pod\u013ea odhadov v\u00fdvoj\u00e1rov priemerne oneskoren\u00e9 na\u010d\u00edtanie u\u0161etr\u00ed 2-3% prev\u00e1dzky, zn\u00ed\u017ei po\u010det po\u010diato\u010dn\u00fdch vykreslen\u00ed<\/a><\/noindex> o 1-2% a zn\u00ed\u017ei oneskorenie pred dostupnos\u0165ou vstupu<\/a><\/noindex> o 2 %. Pre konkr\u00e9tne str\u00e1nky s\u00fa zmeny v\u00fdraznej\u0161ie. Napr\u00edklad zapnutie oneskorenej na\u010d\u00edtania bloku YouTube povedie k zn\u00ed\u017eeniu pren\u00e1\u0161an\u00fdch d\u00e1t o pribli\u017ene 500KB, Instagram \u2014 o 100KB, Spotify \u2014 500KB, Facebook \u2014 o 400KB. Mimochodom, pou\u017eitie oneskorenej na\u010d\u00edtania youtube blokov na str\u00e1nke Chrome.com umo\u017enilo na mobiln\u00fdch zariadeniach zn\u00ed\u017ei\u0165 \u010das \u010dakania na dostupnos\u0165 str\u00e1nok pre interakciu a\u017e o 10 sek\u00fand a na 511KB zn\u00ed\u017ei\u0165 ve\u013ekos\u0165 p\u00f4vodne na\u010d\u00edtan\u00e9ho JavaScript k\u00f3du. <\/p>\n

\"V<\/a><\/noindex><\/center><\/p>\n

<\/a><\/noindex><\/p>\n

Zdroj: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430 Chrome \u0441\u043e\u043e\u0431\u0449\u0438\u043b\u0438 \u043e \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u0438 \u0441\u0440\u0435\u0434\u0441\u0442\u0432 \u0434\u043b\u044f \u043e\u0442\u043b\u043e\u0436\u0435\u043d\u043d\u043e\u0439 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u043e\u0432 web-\u0441\u0442\u0440\u0430\u043d\u0438\u0446, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0445 \u043d\u0435 \u0437\u0430\u0433\u0440\u0443\u0436\u0430\u0442\u044c \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0435, \u043d\u0430\u0445\u043e\u0434\u044f\u0449\u0438\u0435\u0441\u044f \u0432\u043d\u0435 \u0432\u0438\u0434\u0438\u043c\u043e\u0439 \u043e\u0431\u043b\u0430\u0441\u0442\u0438, \u0434\u043e \u0442\u0435\u0445 \u043f\u043e\u0440, \u043f\u043e\u043a\u0430 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