{"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\/it\/blog\/news\/v-chrome-dobavlena-podderzhka-otlozhennoj-zagruzki-iframe-blokov","title":{"rendered":"In Chrome \u00e8 stata aggiunta la supporto per il caricamento ritardato dei blocchi iframe.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Sviluppatori del browser Chrome hanno comunicato<\/a><\/noindex> sul supporto per il caricamento differito degli elementi delle pagine web, che consente di non caricare contenuti al di fuori dell'area visibile fino a quando l'utente non scorre la pagina in un punto immediatamente precedente all'elemento. In precedenza, in Chrome 76 e Firefox 75, questa modalit\u00e0 era gi\u00e0 stata implementata per le immagini. Ora gli sviluppatori di Chrome hanno fatto un ulteriore passo avanti e hanno aggiunto la possibilit\u00e0 di caricare in modo differito i blocchi iframe.<\/p>\n

Per gestire il caricamento differito delle pagine, nel tag \u00e8 stato aggiunto l'attributo \"loading\", che pu\u00f2 assumere il valore \"lazy\" (caricamento rinviato), \"eager\" (caricamento immediato) e \"auto\" (caricamento rinviato a discrezione del browser, quando attivato in modalit\u00e0 Lite<\/a><\/noindex>). Si prevede che il caricamento differito riduca il consumo di memoria, diminuisca il traffico e aumenti la velocit\u00e0 di apertura iniziale delle pagine. Ad esempio, con l'attivazione della nuova modalit\u00e0 non si caricheranno immediatamente i blocchi pubblicitari e i widget di Twitter, Facebook e YouTube se non sono visibili all'utente, fino a quando l'utente non scorre la pagina nella posizione davanti a questi blocchi. <\/p>\n

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

Secondo le stime degli sviluppatori, mediamente il caricamento differito consentir\u00e0 di risparmiare dal 2 al 3% del traffico, ridurre il numero di renderizzazioni iniziali<\/a><\/noindex> dell'1-2% e diminuire il ritardo prima che l'input sia disponibile<\/a><\/noindex> del 2%. Per siti specifici, le modifiche sono pi\u00f9 evidenti. Ad esempio, l'attivazione del caricamento differito del blocco YouTube comporter\u00e0 una riduzione dei dati caricati di circa 500KB, Instagram \u2014 100KB, Spotify \u2014 500KB, Facebook \u2014 400KB. In particolare, l'uso del caricamento differito dei blocchi YouTube sul sito Chrome.com ha permesso di ridurre fino a 10 secondi il tempo di attesa per la disponibilit\u00e0 delle pagine su dispositivi mobili e di ridurre di 511KB le dimensioni del JavaScript originariamente caricato. <\/p>\n

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

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

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

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