JavaScript ã«ããã new æ¼ç®åã®åä½ã¯å¤§ã¾ãã«ãã£ã¦ä»¥ä¸ã®ã¨ããã§ããã(new F() ã¨ããå ´åã) æ°ãããªãã¸ã§ã¯ããä½ãã 1 ã§ä½ã£ããªãã¸ã§ã¯ãã® [[Prototype]] å é¨ãããã㣠(__proto__ ããããã£) ã« F.prototype ã®å¤ãè¨å®ããã F.prototype ã®å¤ããªãã¸ã§ã¯ãã§ãªãã®ãªã代ããã« Object.prototype ã®å¤ãè¨å®ããã F ãå¼ã³åºãããã®ã¨ã this ã®å¤ã¯ 1 ã§ä½ã£ããªãã¸ã§ã¯ãã¨ããå¼æ°ã«ã¯ new æ¼ç®åã¨ã¨ãã«ä½¿ãããå¼æ°ããã®ã¾ã¾ç¨ããã 3 ã®è¿ãå¤ããªãã¸ã§ã¯ããªããããè¿ããããã§ãªããã° 1 ã§ä½ã£ããªãã¸ã§ã¯ããè¿ãã ããã§ããªãã¸ã§ã¯ãã§ãããã¨ããã®ã¯ããªããã£ãå¤ (æååãæ°å¤ãçå½å¤ãundefined ãnull) ã§ã¯ãªãã¨ãããã¨ã ãnew Stri
{{#tags}}- {{label}}
{{/tags}}