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4 ????? ????? ?? JavaScript

????? ?????

???? ?? ???? ????? ?? ????? ????? ?? ??? JavaScript.

????? ????? ?? JavaScript

????? ????? ?? JavaScript ???? ?? ??? ????? ???????? JavaScript ?? a ????? ???? '???' ???? ???????? ????? ?? ??? ??????. ? ????? ??? ?????? ?????? ??? ???? ?????? ???????? ??, for ??????, ??? ???? ???? ??????? ??????? ?? ?????? ?????:

 ???? (??? - 32) * 5/9

???????? ?? ????? ????? ?? JavaScript, ????? ?????? ?-a ???????? JavaScript ??? ???:

??????? (???)
       {
           ???? (??? - 32) * 5/9
       }

????? ???? '???' ????? ???? ???????. ????? ???? ???? ???????? ??????? ??????? ???? ToString() (?? ?? ???? ?? ?????? ?????? ???? ??????), ?? ??? ??????:

• ????? ??? ?? ????? ????? ??????
• ????? ??? null ????? ?????? ??? ????, ????? ?????? ????? ?? '??? ???' ?????? '????? ????? ????'.

???? ?????? ?????? ?? ??? ????? ?????/????????? (???? ??? ??????? ?? ???????? ?????).

??????:

if (??? == 0)
            ???? "??? ??? ???"
       ???? 1/???

??? ?????? ?? ??? ??? ?? 10 ????? ?????? (???? ??????? ???? ?????? ??? ?? ???? ?? ?????? ?????); ???? ??? ???? ????? ?????. ????? ????? ?? 64 ??? ???? ?????.

??? ????? ?? ??? ?????? ?????? ?? JavaScript ???? ?????? ????? ?? ????? ???? ???? ???? ????? ???? ????. ?? ????? ????? ?????? ?????? ?? ????? ????? ?????? ??????? ????? ?????? ???? ????? ????.

????? ?????? ???? ???? (3 ????) ????? ????? ????? ????? ???? ??? ?????? ?? ??????? ?????? ??? ????? ?? ????? ????? ???? ????????? ????? (????? ?? ????? ?? DebugLevel 4 ?????).

????? ????? ?? JavaScript ????? ?? Duktape () ???? JavaScript.

??? ??: ???????? JavaScript ?????? ????????? functions

????? ??????? ????? ?????????

???? ?????? ??????? ????? ?? ????? ???? JavaScript. ?? ????? ???? ?????? ????? ?? ?????, ?????? ????? ??? ?????? ?? ??? ???/?????? ???? ?? ????? ???? ????? ????? ????????. ???? ??, ?? ??? ????? ???? ????? ????? ?-frontend, ???? ????? ?? ?????? ? ???? ????? ????? ????.

?????? ????, ?? ???? ?????? ???? ????? {$THRESHOLD} ???, ??? ??? (?? ????) ????? ????? ???:

var threshold = '{$THRESHOLD}';
       return (!isNaN(threshold) && value > threshold) ? ??? ??;