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

Sviluppatori del browser Chrome hanno comunicato<\/a><\/noindex> riguardo all'estensione degli strumenti per il caricamento posticipato degli elementi delle pagine web, che consentono di non caricare il contenuto al di fuori dell'area visibile fino a quando l'utente non scorre la pagina fino al punto immediatamente precedente l'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 aggiungendo la possibilit\u00e0 di caricare in modo posticipato i blocchi iframe.<\/p>\n

Per gestire il caricamento posticipato delle pagine, \u00e8 stato aggiunto l'attributo \"loading\" al tag , che pu\u00f2 assumere il valore \"lazy\" (caricare in seguito), \"eager\" (caricare subito) e \"auto\" (caricare in base al giudizio del browser, attivando la modalit\u00e0 Lite<\/a><\/noindex>). Si prevede che il caricamento posticipato riduca il consumo di memoria, diminuisca il traffico e aumenti la velocit\u00e0 di apertura iniziale delle pagine. Ad esempio, attivando la nuova modalit\u00e0, i blocchi di pubblicit\u00e0 e i widget di Twitter, Facebook e YouTube non verranno caricati immediatamente se non sono visibili per l'utente, fino a quando l'utente non scorre la pagina fino alla posizione davanti a questi blocchi. <\/p>\n

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

Secondo gli sviluppatori, il caricamento differito consente mediamente di risparmiare dal 2% al 3% di traffico, riducendo il numero delle prime raffigurazioni<\/a><\/noindex> di circa l'1-2% e diminuendo il ritardo prima che l'input diventi disponibile<\/a><\/noindex> del 2%. Per siti specifici, le modifiche sono pi\u00f9 evidenti. Ad esempio, l'attivazione del caricamento posticipato del blocco YouTube ridurr\u00e0 i dati caricati di circa 500KB, Instagram \u2014 di 100KB, Spotify \u2014 di 500KB, Facebook \u2014 di 400KB. In particolare, l'applicazione del caricamento posticipato dei blocchi YouTube sul sito Chrome.com ha permesso di ridurre fino a 10 secondi il tempo di attesa per l'accessibilit\u00e0 delle pagine sui dispositivi mobili e di ridurre di 511KB la dimensione inizialmente caricata del codice JavaScript. <\/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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