Progressive enhancement ??? ?????

????????? ??? ??? ?????????? ??????? ?? ?????? browsers ??? ?????? designers/developers ??? ???????? ???? ?????? ???? ??? ?? ??????????? ??? ?????? sites.

?? ????? ?? progressive enhancement

???’ ????? ?? progressive enhancement ????? ?? ???? ??????? ??? graceful degradation. (????????????? ??? ????? ??? ???? ????? ????? ?????????? ??? ?????? ??? ????? ??? trendy, ??? ???? ??????????? ?? ?????? ?? ??????? ?? ??? search. ???? ?; )

?? progressive enhancement ????? ? ????????? ??? ????????? ??? ??? ???????? ??????????? ???? ???? ?? ??????????? ?? ????? ?????? ?????????? ??’ ????? ???? browsers. ?????????? ?? ?????????? ??? ???????????? (??? ????????? ??? HTML ???????) ??? ?? ???????? ??????????? ??? ??????? (??? CSS ?????? ??????) ?? ??? ?? ??????? ??? ??????????? ??? ????????? (??????? JavaScript).

? ???? graceful degradation ????? ?? ???????? ??? ????. ???????? ?? ?????????? ?????????? ??? ????? ???????????????? ??? ??? ????????? ????????, ???? ?????????? ?? ??????????? ??? ???? ??? ?????? ??? ????????????. ??? ?? ?? ??????? ??? ???? ??? ?????: ??????????? ??????????? ??? ?? ????????? ??? ?? ??????????? ?????? ????? ?????????? browsers, ???? ?????????? ?? ????? ??????????? ?? ?????????? ??? ????? ??? ???????.

?? ????????? ??? ???? ???? ?????????????? ??? designer;

? ????? designer ??? ?????? ?????? ?? ?????????? ??? HTML ??? ?? CSS ???????? ?? ??? ????????? ?????? ??? ?? ???? ?? ????? ??? ??? ?? JavaScript. ??? ?? ????? ?????? ?????, ?????? ??? ???? ??? ???? ????? ??? ??? ???? ????? ??? ?????? ???????? ??? ??? ?????????????. ??????? ?? ?? progressive enhacnement.

???? ?? ???????? ??? ????? ??? graceful degradation. ??? ???????????? ?? “???????? ??? site ??? ?????? ????? ????? ?????????? browsers”;

??? ???? ?????? ?? ???????? ???? ?????????? browsers. ???? ?? ??????, ?? ????????? browsers ????? ?? Webkit ingited. ?? Webkit ????? ? “??????” ??? ????? ??? browser ?? “??????”. ?? Webkit ????? ??? open source project ??? ???????????? ?????????? ??? ????? ????????? ?? ??? ?????????? ?? ??????? ??????????? CSS3 ??? HTML5. ?? browsers ??? “??????” ?? Webkit ????? ? Safari, ? Chrome ??? ? OmniWeb. ?????? ??? Chrome ??? ?????? ??? ????????, ??? ??? Safari ????? ??? ??????? ??? ??????? ??? ??????. ? OmniWeb ????? ?????? ???????????? ??? ????? ?????????? ???? ??? Mac ??????????.

??? ?? ?????? ??? ?? web designers ????? ?? ????????? ??? ?? graceful degradation, ? Safari ??? ? Chrome ?????? ?? ????? ? ???????? ??? ?????????? ????. ?? ???? ?? ?????? browsers ???? ? Firefox ? ? Opera, ????? ????? ?? ???????? ??? ??? ?????? ??? design “??? ??????????”.

??? “?????????” ?? graceful degradation;

??????? ??? ????? ???????? ??? ?? ??? ?? ???????????? ??? ???? ??????????/??????? ??? ????? ?????????? ???? ????? ??? Internet Explorer 6. ??? ????? ?????? ?? ???? ???????? ?’ ???????? browser. ??’ ???? ?? ???? ??? ???????? ?? ??? ???????.

??????? ??? ?? graceful degradation ?/??? ?? progessive enhancement “???????????” ???? ????. ?? ???????? ??? ?? ????????? ??? ????? ??????. ????? ????? ???????? ??? ?? ?????????. ?????????? ??? ???????? ???????? ??? ??? ???????? ??? ?? ??????? ?? ?????? ?? ????? browsers. ???? ??? ?????? ?? ???????? ?????? ?? ????? ??? ???????? ?? ??? website.

???, ?? ??????????? ??? ?? ????????? ??????????? ?? ???? browser, ????? ????? ??? ???????? ??????? ?? ????????? ?? ???? ?? ?????. ??????? browsers ???????????? ??? ??????? ????? ??? ?? ?? ???????????????? ??? ???????. ???????? ??????? ? ????? ????? ???? ??? ????? ???? ?????? ? ?????? ?? ???????? ?????? ??????????? ?? ?????? ???????? ??? Internet Explorer ??? ? ??????????/??????? ?? ???????. ?????; ????? ???? ??????????? ???? ?? ??????? ???? ??????? ??? ???????????.

?? ???? ???? ?? site ??? ??? iPhone, ????: “??? ????? ??? ?? ??????????????? ??? iPhone. ??? ?? ????? ????? ? ??????? ??? ??????????.”
?? ??? ????????: “?? ?? ???????, ???? ?? ?????? ??????”.
(???? ???? ??? ? Andy Clarke.)

??????????? ??? ?? progressive enhancement ??? ?? graceful degradation: Understanding Progressive Enhancement ??? A List Apart