Baseline Widely available
Map()
ã³ã³ã¹ãã©ã¯ã¿ã¼ã¯ã Map
ãªãã¸ã§ã¯ããçæãã¾ãã
new Map()
new Map(iterable)
ã¡ã¢: Map()
㯠new
ã§ãã使ã§ãã¾ãããnew
ãçç¥ãã¦å¼ã³åºããã¨ããã¨ãTypeError
ãçºçãã¾ãã
iterable
çç¥å¯
Array
ã¾ãã¯ä»ã®å復å¦çå¯è½ãªãªãã¸ã§ã¯ãã§ãè¦ç´ ã¯ãã¼ã¨å¤ã®çµã§ãã (ãã¨ãã°ã [[ 1, 'one' ],[ 2, 'two' ]]
ã®ãã㪠2 ã¤ã®è¦ç´ ãæã¤é
åã) ããããã®ããããã®ãã¼ã¨å¤ã®çµãæ°ãã Map
ã«è¿½å ããã¾ãã
const myMap = new Map([
[1, "one"],
[2, "two"],
[3, "three"],
]);
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