{"id":16031,"date":"2024-08-17T20:22:55","date_gmt":"2024-08-17T16:52:55","guid":{"rendered":"https:\/\/www.itpiran.net\/blog\/?p=16031"},"modified":"2024-08-17T20:22:55","modified_gmt":"2024-08-17T16:52:55","slug":"javascript-reference-classes","status":"publish","type":"post","link":"https:\/\/www.itpiran.net\/blog\/de\/tutorials\/javascript-reference-classes\/","title":{"rendered":"Klassen in JavaScript"},"content":{"rendered":"

\u0645\u0642\u062f\u0645\u0647<\/h2>\n

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\n
\/\/ Declaration\r\nclass Rectangle {\r\nconstructor(height, width) {\r\nthis.height = height;\r\nthis.width = width;\r\n}\r\n}\r\n\/\/ Expression; the class is anonymous but assigned to a variable\r\nconst Rectangle = class {\r\nconstructor(height, width) {\r\nthis.height = height;\r\nthis.width = width;\r\n}\r\n};\r\n\/\/ Expression; the class has its own name\r\nconst Rectangle = class Rectangle2 {\r\nconstructor(height, width) {\r\nthis.height = height;\r\nthis.width = width;\r\n}\r\n};<\/code><\/pre>\n<\/div>\n
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\u0628\u062f\u0646\u0647 \u06a9\u0644\u0627\u0633<\/h2>\n
\u0628\u062f\u0646\u0647 \u06cc\u06a9 \u06a9\u0644\u0627\u0633 \u0628\u062e\u0634\u06cc \u0627\u0633\u062a \u06a9\u0647 \u062f\u0631 \u067e\u0631\u0627\u0646\u062a\u0632\u0647\u0627\u06cc \u0645\u062c\u0639\u062f {} \u0642\u0631\u0627\u0631 \u062f\u0627\u0631\u062f. \u0627\u06cc\u0646\u062c\u0627 \u062c\u0627\u06cc\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0627\u0639\u0636\u0627\u06cc \u06a9\u0644\u0627\u0633 \u0645\u0627\u0646\u0646\u062f \u0645\u062a\u062f\u0647\u0627 \u06cc\u0627 \u0633\u0627\u0632\u0646\u062f\u0647 \u0631\u0627 \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc \u06a9\u0646\u06cc\u062f.<\/p>\n
\u0628\u062f\u0646\u0647 \u06cc\u06a9 \u06a9\u0644\u0627\u0633 \u062f\u0631 \u062d\u0627\u0644\u062a \u0633\u062e\u062a \u06af\u06cc\u0631\u0627\u0646\u0647 \u0627\u062c\u0631\u0627 \u0645\u06cc \u0634\u0648\u062f\u060c \u062d\u062a\u06cc \u0628\u062f\u0648\u0646 \u062f\u0633\u062a\u0648\u0631 “\u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0633\u062e\u062a”.<\/p>\n
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    \n
  • \u0646\u0648\u0639: \u06af\u06cc\u0631\u0646\u062f\u0647\u060c \u062a\u0646\u0638\u06cc\u0645 \u06a9\u0646\u0646\u062f\u0647\u060c \u0631\u0648\u0634 \u06cc\u0627 \u0645\u06cc\u062f\u0627\u0646<\/li>\n
  • \u0645\u06a9\u0627\u0646: \u0627\u06cc\u0633\u062a\u0627 \u06cc\u0627 \u0646\u0645\u0648\u0646\u0647<\/li>\n
  • \u062f\u06cc\u062f: \u0639\u0645\u0648\u0645\u06cc \u06cc\u0627 \u062e\u0635\u0648\u0635\u06cc<\/li>\n<\/ul>\n
    Constructor<\/h2>\n
    \u0645\u062a\u062f \u0633\u0627\u0632\u0646\u062f\u0647 \u06cc\u06a9 \u0645\u062a\u062f \u062e\u0627\u0635 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u0648 \u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0627\u0648\u0644\u06cc\u0647 \u06cc\u06a9 \u0634\u06cc \u0627\u06cc\u062c\u0627\u062f \u0634\u062f\u0647 \u0628\u0627 \u06cc\u06a9 \u06a9\u0644\u0627\u0633 \u0627\u0633\u062a. \u0641\u0642\u0637 \u06cc\u06a9 \u0645\u062a\u062f \u062e\u0627\u0635 \u0628\u0627 \u0646\u0627\u0645 “constructor” \u062f\u0631 \u06cc\u06a9 \u06a9\u0644\u0627\u0633 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0648\u062c\u0648\u062f \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f – \u0627\u06af\u0631 \u06a9\u0644\u0627\u0633 \u062d\u0627\u0648\u06cc \u0628\u06cc\u0634 \u0627\u0632 \u06cc\u06a9 \u0645\u0648\u0631\u062f \u0627\u0632 \u06cc\u06a9 \u0645\u062a\u062f \u0633\u0627\u0632\u0646\u062f\u0647 \u0628\u0627\u0634\u062f\u060c \u06cc\u06a9 SyntaxError \u067e\u0631\u062a\u0627\u0628 \u0645\u06cc \u0634\u0648\u062f.<\/p>\n
    \u06cc\u06a9 \u0633\u0627\u0632\u0646\u062f\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0627\u0632 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc super \u0628\u0631\u0627\u06cc \u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc \u0633\u0627\u0632\u0646\u062f\u0647 \u06a9\u0644\u0627\u0633 super \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u062f.<\/p>\n
    \u0634\u0645\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u0648\u06cc\u0698\u06af\u06cc \u0647\u0627\u06cc \u0646\u0645\u0648\u0646\u0647 \u0631\u0627 \u062f\u0631 \u062f\u0627\u062e\u0644 \u0633\u0627\u0632\u0646\u062f\u0647 \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u06cc\u062f:<\/p>\n
    \n
    class Rectangle {\r\nconstructor(height, width) {\r\nthis.height = height;\r\nthis.width = width;\r\n}\r\n}<\/code><\/pre>\n<\/div>\n
    \u0627\u0632 \u0637\u0631\u0641 \u062f\u06cc\u06af\u0631\u060c \u0627\u06af\u0631 \u0645\u0642\u0627\u062f\u06cc\u0631 \u0648\u06cc\u0698\u06af\u06cc \u0647\u0627\u06cc \u0646\u0645\u0648\u0646\u0647 \u0634\u0645\u0627 \u0628\u0647 \u0622\u0631\u06af\u0648\u0645\u0627\u0646 \u0647\u0627\u06cc \u0633\u0627\u0632\u0646\u062f\u0647 \u0628\u0633\u062a\u06af\u06cc \u0646\u062f\u0627\u0631\u062f\u060c \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u0622\u0646\u0647\u0627 \u0631\u0627 \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0641\u06cc\u0644\u062f\u0647\u0627\u06cc \u06a9\u0644\u0627\u0633 \u062a\u0639\u0631\u06cc\u0641 \u06a9\u0646\u06cc\u062f.<\/p>\n
    \u0628\u0644\u0648\u06a9 \u0647\u0627\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0633\u0627\u0632\u06cc \u0627\u0633\u062a\u0627\u062a\u06cc\u06a9<\/h2>\n
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    \u0686\u0646\u062f\u06cc\u0646 \u0628\u0644\u0648\u06a9 \u0627\u0633\u062a\u0627\u062a\u06cc\u06a9 \u0631\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646 \u0627\u0639\u0644\u0627\u0646 \u06a9\u0631\u062f\u060c \u0648 \u0627\u06cc\u0646 \u0628\u0644\u0648\u06a9 \u0647\u0627 \u0631\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646 \u0628\u0627 \u0627\u0639\u0644\u0627\u0646 \u0641\u06cc\u0644\u062f\u0647\u0627 \u0648 \u0631\u0648\u0634 \u0647\u0627\u06cc \u0627\u0633\u062a\u0627\u062a\u06cc\u06a9 \u062f\u0631 \u0647\u0645 \u0622\u0645\u06cc\u062e\u062a (\u0647\u0645\u0647 \u0645\u0648\u0627\u0631\u062f \u0627\u0633\u062a\u0627\u062a\u06cc\u06a9 \u0628\u0647 \u062a\u0631\u062a\u06cc\u0628 \u0627\u0639\u0644\u0627\u0645 \u0627\u0631\u0632\u06cc\u0627\u0628\u06cc \u0645\u06cc \u0634\u0648\u0646\u062f).<\/p>\n
    Methods<\/h2>\n
    \u0645\u062a\u062f\u0647\u0627 \u0628\u0631 \u0631\u0648\u06cc \u0646\u0645\u0648\u0646\u0647 \u0627\u0648\u0644\u06cc\u0647 \u0647\u0631 \u0646\u0645\u0648\u0646\u0647 \u06a9\u0644\u0627\u0633 \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc \u0634\u0648\u0646\u062f \u0648 \u062a\u0648\u0633\u0637 \u0647\u0645\u0647 \u0646\u0645\u0648\u0646\u0647 \u0647\u0627 \u0628\u0647 \u0627\u0634\u062a\u0631\u0627\u06a9 \u06af\u0630\u0627\u0634\u062a\u0647 \u0645\u06cc \u0634\u0648\u0646\u062f. \u0631\u0648\u0634 \u0647\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u0646\u062f \u062a\u0648\u0627\u0628\u0639 \u0633\u0627\u062f\u0647\u060c \u062a\u0648\u0627\u0628\u0639 \u0646\u0627\u0647\u0645\u06af\u0627\u0645\u060c \u062a\u0648\u0627\u0628\u0639 \u0645\u0648\u0644\u062f \u06cc\u0627 \u062a\u0648\u0627\u0628\u0639 \u0645\u0648\u0644\u062f \u0646\u0627\u0647\u0645\u06af\u0627\u0645 \u0628\u0627\u0634\u0646\u062f. \u0628\u0631\u0627\u06cc \u0627\u0637\u0644\u0627\u0639\u0627\u062a \u0628\u06cc\u0634\u062a\u0631\u060c \u0628\u0647 \u062a\u0639\u0627\u0631\u06cc\u0641 \u0631\u0648\u0634 \u0645\u0631\u0627\u062c\u0639\u0647 \u06a9\u0646\u06cc\u062f.<\/p>\n
    \n
    class Rectangle {\r\nconstructor(height, width) {\r\nthis.height = height;\r\nthis.width = width;\r\n}\r\n\/\/ Getter\r\nget area() {\r\nreturn this.calcArea();\r\n}\r\n\/\/ Method\r\ncalcArea() {\r\nreturn this.height * this.width;\r\n}\r\n*getSides() {\r\nyield this.height;\r\nyield this.width;\r\nyield this.height;\r\nyield this.width;\r\n}\r\n}\r\nconst square = new Rectangle(10, 10);\r\nconsole.log(square.area); \/\/ 100\r\nconsole.log([...square.getSides()]); \/\/ [10, 10, 10, 10]<\/code><\/pre>\n<\/div>\n
    \u0631\u0648\u0634 \u0647\u0627 \u0648 \u0632\u0645\u06cc\u0646\u0647 \u0647\u0627\u06cc \u0627\u0633\u062a\u0627\u062a\u06cc\u06a9<\/h2>\n
    \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc static \u06cc\u06a9 \u0645\u062a\u062f \u06cc\u0627 \u0641\u06cc\u0644\u062f \u062b\u0627\u0628\u062a \u0631\u0627 \u0628\u0631\u0627\u06cc \u06cc\u06a9 \u06a9\u0644\u0627\u0633 \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc \u06a9\u0646\u062f. \u062e\u0635\u0648\u0635\u06cc\u0627\u062a \u0627\u0633\u062a\u0627\u062a\u06cc\u06a9 (\u0641\u06cc\u0644\u062f\u0647\u0627 \u0648 \u0645\u062a\u062f\u0647\u0627) \u0628\u0647 \u062c\u0627\u06cc \u0647\u0631 \u0646\u0645\u0648\u0646\u0647 \u0631\u0648\u06cc \u062e\u0648\u062f \u06a9\u0644\u0627\u0633 \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc \u0634\u0648\u0646\u062f. \u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u0627\u0633\u062a\u0627\u062a\u06cc\u06a9 \u0627\u063a\u0644\u0628 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u062a\u0648\u0627\u0628\u0639 \u06a9\u0627\u0631\u0628\u0631\u062f\u06cc \u0628\u0631\u0627\u06cc \u06cc\u06a9 \u0628\u0631\u0646\u0627\u0645\u0647 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f\u060c \u062f\u0631 \u062d\u0627\u0644\u06cc \u06a9\u0647 \u0641\u06cc\u0644\u062f\u0647\u0627\u06cc \u0627\u0633\u062a\u0627\u062a\u06cc\u06a9 \u0628\u0631\u0627\u06cc \u062d\u0627\u0641\u0638\u0647 \u067e\u0646\u0647\u0627\u0646\u060c \u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc \u062b\u0627\u0628\u062a \u06cc\u0627 \u0647\u0631 \u062f\u0627\u062f\u0647 \u062f\u06cc\u06af\u0631\u06cc \u06a9\u0647 \u0646\u06cc\u0627\u0632\u06cc \u0628\u0647 \u062a\u06a9\u0631\u0627\u0631 \u062f\u0631 \u0646\u0645\u0648\u0646\u0647\u200c\u0647\u0627 \u0646\u06cc\u0633\u062a\u060c \u0645\u0641\u06cc\u062f \u0647\u0633\u062a\u0646\u062f.<\/p>\n
    \n
    class Point {\r\nconstructor(x, y) {\r\nthis.x = x;\r\nthis.y = y;\r\n}\r\nstatic displayName = \"Point\";\r\nstatic distance(a, b) {\r\nconst dx = a.x - b.x;\r\nconst dy = a.y - b.y;\r\nreturn Math.hypot(dx, dy);\r\n}\r\n}\r\nconst p1 = new Point(5, 5);\r\nconst p2 = new Point(10, 10);\r\np1.displayName; \/\/ undefined\r\np1.distance; \/\/ undefined\r\np2.displayName; \/\/ undefined\r\np2.distance; \/\/ undefined\r\nconsole.log(Point.displayName); \/\/ \"Point\"\r\nconsole.log(Point.distance(p1, p2)); \/\/ 7.0710678118654755<\/code><\/pre>\n<\/div>\n
    \u0627\u0639\u0644\u0627\u0645\u06cc\u0647 \u0647\u0627\u06cc \u0645\u06cc\u062f\u0627\u0646\u06cc<\/h2>\n
    \u0628\u0627 \u0646\u062d\u0648 \u0627\u0639\u0644\u0627\u0646 \u0641\u06cc\u0644\u062f \u06a9\u0644\u0627\u0633\u060c \u0645\u062b\u0627\u0644 \u0633\u0627\u0632\u0646\u062f\u0647 \u0631\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646 \u0628\u0647 \u0635\u0648\u0631\u062a \u0632\u06cc\u0631 \u0646\u0648\u0634\u062a:<\/p>\n
    \n
    class Rectangle {\r\nheight = 0;\r\nwidth;\r\nconstructor(height, width) {\r\nthis.height = height;\r\nthis.width = width;\r\n}\r\n}<\/code><\/pre>\n<\/div>\n
    \u0641\u06cc\u0644\u062f\u0647\u0627\u06cc \u06a9\u0644\u0627\u0633 \u0634\u0628\u06cc\u0647 \u0648\u06cc\u0698\u06af\u06cc \u0647\u0627\u06cc \u0634\u06cc \u0647\u0633\u062a\u0646\u062f \u0646\u0647 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u060c \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u0627\u0632 \u06a9\u0644\u0645\u0627\u062a \u06a9\u0644\u06cc\u062f\u06cc \u0645\u0627\u0646\u0646\u062f const \u0628\u0631\u0627\u06cc \u0627\u0639\u0644\u0627\u0645 \u0622\u0646\u0647\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0646\u0645\u06cc \u06a9\u0646\u06cc\u0645. \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\u060c \u062e\u0635\u0648\u0635\u06cc\u0627\u062a \u062e\u0635\u0648\u0635\u06cc \u0627\u0632 \u0646\u062d\u0648 \u0634\u0646\u0627\u0633\u0647 \u062e\u0627\u0635\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u0646\u062f\u060c \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u06a9\u0644\u0645\u0627\u062a \u06a9\u0644\u06cc\u062f\u06cc \u0627\u0635\u0644\u0627\u062d \u06a9\u0646\u0646\u062f\u0647 \u0645\u0627\u0646\u0646\u062f \u0639\u0645\u0648\u0645\u06cc \u0648 \u062e\u0635\u0648\u0635\u06cc \u0646\u06cc\u0632 \u0646\u0628\u0627\u06cc\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0634\u0648\u0646\u062f.<\/p>\n
    \u0647\u0645\u0627\u0646\u0637\u0648\u0631 \u06a9\u0647 \u062f\u0631 \u0628\u0627\u0644\u0627 \u0645\u0634\u0627\u0647\u062f\u0647 \u0634\u062f\u060c \u0641\u06cc\u0644\u062f\u0647\u0627 \u0631\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646 \u0628\u0627 \u06cc\u0627 \u0628\u062f\u0648\u0646 \u0645\u0642\u062f\u0627\u0631 \u067e\u06cc\u0634 \u0641\u0631\u0636 \u0627\u0639\u0644\u0627\u0645 \u06a9\u0631\u062f. \u0641\u06cc\u0644\u062f\u0647\u0627\u06cc \u0628\u062f\u0648\u0646 \u0645\u0642\u0627\u062f\u06cc\u0631 \u067e\u06cc\u0634 \u0641\u0631\u0636 \u0628\u0647 \u0637\u0648\u0631 \u067e\u06cc\u0634 \u0641\u0631\u0636 \u062a\u0639\u0631\u06cc\u0641 \u0646\u0634\u062f\u0647 \u0627\u0633\u062a. \u0628\u0627 \u0627\u0639\u0644\u0627\u0645 \u0641\u06cc\u0644\u062f\u0647\u0627 \u062f\u0631 \u062c\u0644\u0648\u060c \u062a\u0639\u0627\u0631\u06cc\u0641 \u06a9\u0644\u0627\u0633 \u0628\u06cc\u0634\u062a\u0631 \u0645\u0633\u062a\u0646\u062f\u0633\u0627\u0632\u06cc \u0645\u06cc\u200c\u0634\u0648\u0646\u062f \u0648 \u0641\u06cc\u0644\u062f\u0647\u0627 \u0647\u0645\u06cc\u0634\u0647 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u0646\u062f \u06a9\u0647 \u0628\u0647 \u0628\u0647\u06cc\u0646\u0647\u200c\u0633\u0627\u0632\u06cc \u06a9\u0645\u06a9 \u0645\u06cc\u200c\u06a9\u0646\u0646\u062f.<\/p>\n
    \u0628\u0631\u0627\u06cc \u0627\u0637\u0644\u0627\u0639\u0627\u062a \u0628\u06cc\u0634\u062a\u0631 \u0628\u0647 \u0641\u06cc\u0644\u062f\u0647\u0627\u06cc \u06a9\u0644\u0627\u0633 \u0639\u0645\u0648\u0645\u06cc \u0645\u0631\u0627\u062c\u0639\u0647 \u06a9\u0646\u06cc\u062f.<\/p>\n
    Private properties<\/h2>\n
    \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0641\u06cc\u0644\u062f\u0647\u0627\u06cc \u062e\u0635\u0648\u0635\u06cc\u060c \u062a\u0639\u0631\u06cc\u0641 \u0631\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646 \u0628\u0647 \u0635\u0648\u0631\u062a \u0632\u06cc\u0631 \u0627\u0635\u0644\u0627\u062d \u06a9\u0631\u062f.<\/p>\n
    \n
    class Rectangle {\r\n#height = 0;\r\n#width;\r\nconstructor(height, width) {\r\nthis.#height = height;\r\nthis.#width = width;\r\n}\r\n}<\/code><\/pre>\n<\/div>\n
    \u0627\u0631\u062c\u0627\u0639 \u062f\u0627\u062f\u0646 \u0628\u0647 \u0641\u06cc\u0644\u062f\u0647\u0627\u06cc \u062e\u0635\u0648\u0635\u06cc \u0627\u0632 \u062e\u0627\u0631\u062c \u0627\u0632 \u06a9\u0644\u0627\u0633 \u06cc\u06a9 \u062e\u0637\u0627 \u0627\u0633\u062a. \u0622\u0646\u0647\u0627 \u0631\u0627 \u0641\u0642\u0637 \u0645\u06cc \u062a\u0648\u0627\u0646 \u062f\u0631 \u0628\u062f\u0646\u0647 \u06a9\u0644\u0627\u0633 \u062e\u0648\u0627\u0646\u062f \u06cc\u0627 \u0646\u0648\u0634\u062a. \u0628\u0627 \u062a\u0639\u0631\u06cc\u0641 \u0686\u06cc\u0632\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u062e\u0627\u0631\u062c \u0627\u0632 \u06a9\u0644\u0627\u0633 \u0642\u0627\u0628\u0644 \u0645\u0634\u0627\u0647\u062f\u0647 \u0646\u06cc\u0633\u062a\u0646\u062f\u060c \u0627\u0637\u0645\u06cc\u0646\u0627\u0646 \u062d\u0627\u0635\u0644 \u0645\u06cc \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u06a9\u0627\u0631\u0628\u0631\u0627\u0646 \u06a9\u0644\u0627\u0633 \u0634\u0645\u0627 \u0646\u0645\u06cc \u062a\u0648\u0627\u0646\u0646\u062f \u0628\u0647 \u062f\u0627\u062e\u0644\u06cc \u0647\u0627 \u0648\u0627\u0628\u0633\u062a\u0647 \u0628\u0627\u0634\u0646\u062f\u060c \u06a9\u0647 \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u0627\u0632 \u0646\u0633\u062e\u0647 \u0627\u06cc \u0628\u0647 \u0646\u0633\u062e\u0647 \u062f\u06cc\u06af\u0631 \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0646\u062f.<\/p>\n
    \u0641\u06cc\u0644\u062f\u0647\u0627\u06cc \u062e\u0635\u0648\u0635\u06cc \u0631\u0627 \u0641\u0642\u0637 \u0645\u06cc \u062a\u0648\u0627\u0646 \u0627\u0632 \u0642\u0628\u0644 \u062f\u0631 \u06cc\u06a9 \u0627\u0639\u0644\u0627\u0645\u06cc\u0647 \u0641\u06cc\u0644\u062f \u0627\u0639\u0644\u0627\u0645 \u06a9\u0631\u062f. \u0622\u0646\u0647\u0627 \u0631\u0627 \u0646\u0645\u06cc \u062a\u0648\u0627\u0646 \u0628\u0639\u062f\u0627\u064b \u0627\u0632 \u0637\u0631\u06cc\u0642 \u062a\u062e\u0635\u06cc\u0635 \u0628\u0647 \u0622\u0646\u0647\u0627\u060c \u0628\u0647 \u0631\u0648\u0634\u06cc \u06a9\u0647 \u0648\u06cc\u0698\u06af\u06cc \u0647\u0627\u06cc \u0645\u0639\u0645\u0648\u0644\u06cc \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0627\u06cc\u062c\u0627\u062f \u06a9\u0631\u062f.<\/p>\n
    \u0628\u0631\u0627\u06cc \u0627\u0637\u0644\u0627\u0639\u0627\u062a \u0628\u06cc\u0634\u062a\u0631 \u0628\u0647 \u0627\u0645\u0644\u0627\u06a9 \u062e\u0635\u0648\u0635\u06cc \u0645\u0631\u0627\u062c\u0639\u0647 \u06a9\u0646\u06cc\u062f.<\/p>\n
    \u0627\u0631\u062b<\/h2>\n
    \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc extends \u062f\u0631 \u0627\u0639\u0644\u0627\u0646 \u0647\u0627\u06cc \u06a9\u0644\u0627\u0633 \u06cc\u0627 \u0639\u0628\u0627\u0631\u0627\u062a \u06a9\u0644\u0627\u0633 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u06cc\u06a9 \u06a9\u0644\u0627\u0633 \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0641\u0631\u0632\u0646\u062f \u0633\u0627\u0632\u0646\u062f\u0647 \u062f\u06cc\u06af\u0631 (\u06a9\u0644\u0627\u0633 \u06cc\u0627 \u062a\u0627\u0628\u0639) \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f.<\/p>\n
    \n
    class Animal {\r\nconstructor(name) {\r\nthis.name = name;\r\n}\r\nspeak() {\r\nconsole.log(`${this.name} makes a noise.`);\r\n}\r\n}\r\nclass Dog extends Animal {\r\nconstructor(name) {\r\nsuper(name); \/\/ call the super class constructor and pass in the name parameter\r\n}\r\nspeak() {\r\nconsole.log(`${this.name} barks.`);\r\n}\r\n}\r\nconst d = new Dog(\"Mitzie\");\r\nd.speak(); \/\/ Mitzie barks.<\/code><\/pre>\n<\/div>\n
    \u0627\u06af\u0631 \u0633\u0627\u0632\u0646\u062f\u0647 \u0627\u06cc \u062f\u0631 \u0632\u06cc\u0631 \u06a9\u0644\u0627\u0633 \u0648\u062c\u0648\u062f \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f\u060c \u0642\u0628\u0644 \u0627\u0632 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0622\u0646 \u0628\u0627\u06cc\u062f \u0627\u0628\u062a\u062f\u0627 super() \u0631\u0627 \u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc \u06a9\u0646\u062f. \u0627\u0632 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc super \u0646\u06cc\u0632 \u0645\u06cc \u062a\u0648\u0627\u0646 \u0628\u0631\u0627\u06cc \u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc \u0645\u062a\u062f\u0647\u0627\u06cc \u0645\u0631\u0628\u0648\u0637 \u0628\u0647 \u06a9\u0644\u0627\u0633 \u0641\u0648\u0642 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f.<\/p>\n
    \n
    class Cat {\r\nconstructor(name) {\r\nthis.name = name;\r\n}\r\nspeak() {\r\nconsole.log(`${this.name} makes a noise.`);\r\n}\r\n}\r\nclass Lion extends Cat {\r\nspeak() {\r\nsuper.speak();\r\nconsole.log(`${this.name} roars.`);\r\n}\r\n}\r\nconst l = new Lion(\"Fuzzy\");\r\nl.speak();\r\n\/\/ Fuzzy makes a noise.\r\n\/\/ Fuzzy roars.<\/code><\/pre>\n<\/div>\n
    \u062f\u0633\u062a\u0648\u0631 \u0627\u0631\u0632\u06cc\u0627\u0628\u06cc<\/h2>\n
    \u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 \u06cc\u06a9 \u0627\u0639\u0644\u0627\u0646 \u06a9\u0644\u0627\u0633 \u06cc\u0627 \u0639\u0628\u0627\u0631\u062a \u06a9\u0644\u0627\u0633 \u0627\u0631\u0632\u06cc\u0627\u0628\u06cc \u0645\u06cc \u0634\u0648\u062f\u060c \u0627\u062c\u0632\u0627\u06cc \u0645\u062e\u062a\u0644\u0641 \u0622\u0646 \u0628\u0647 \u062a\u0631\u062a\u06cc\u0628 \u0632\u06cc\u0631 \u0627\u0631\u0632\u06cc\u0627\u0628\u06cc \u0645\u06cc \u0634\u0648\u0646\u062f:<\/p>\n
      \n
    1. \u0628\u0646\u062f \u062a\u0648\u0633\u0639\u0647 \u06cc\u0627\u0641\u062a\u0647\u060c \u062f\u0631 \u0635\u0648\u0631\u062a \u0648\u062c\u0648\u062f\u060c \u0627\u0628\u062a\u062f\u0627 \u0627\u0631\u0632\u06cc\u0627\u0628\u06cc \u0645\u06cc \u0634\u0648\u062f. \u0628\u0627\u06cc\u062f \u0628\u0647 \u06cc\u06a9 \u062a\u0627\u0628\u0639 \u0633\u0627\u0632\u0646\u062f\u0647 \u0645\u0639\u062a\u0628\u0631 \u06cc\u0627 null \u0627\u0631\u0632\u06cc\u0627\u0628\u06cc \u0634\u0648\u062f\u060c \u062f\u0631 \u063a\u06cc\u0631 \u0627\u06cc\u0646 \u0635\u0648\u0631\u062a \u06cc\u06a9 TypeError \u067e\u0631\u062a\u0627\u0628 \u0645\u06cc \u0634\u0648\u062f.<\/li>\n
    2. \u0645\u062a\u062f \u0633\u0627\u0632\u0646\u062f\u0647 \u0627\u0633\u062a\u062e\u0631\u0627\u062c \u0645\u06cc\u200c\u0634\u0648\u062f \u0648 \u062f\u0631 \u0635\u0648\u0631\u062a \u0639\u062f\u0645 \u0648\u062c\u0648\u062f \u0633\u0627\u0632\u0646\u062f\u0647\u060c \u0628\u0627 \u0627\u062c\u0631\u0627\u06cc \u067e\u06cc\u0634\u200c\u0641\u0631\u0636 \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0628\u0627 \u0627\u06cc\u0646 \u062d\u0627\u0644\u060c \u0627\u0632 \u0622\u0646\u062c\u0627\u06cc\u06cc \u06a9\u0647 \u062a\u0639\u0631\u06cc\u0641 \u0633\u0627\u0632\u0646\u062f\u0647 \u0641\u0642\u0637 \u06cc\u06a9 \u062a\u0639\u0631\u06cc\u0641 \u0631\u0648\u0634 \u0627\u0633\u062a\u060c \u0627\u06cc\u0646 \u0645\u0631\u062d\u0644\u0647 \u0642\u0627\u0628\u0644 \u0645\u0634\u0627\u0647\u062f\u0647 \u0646\u06cc\u0633\u062a.<\/li>\n
    3. \u06a9\u0644\u06cc\u062f\u0647\u0627\u06cc \u0648\u06cc\u0698\u06af\u06cc \u0639\u0646\u0627\u0635\u0631 \u06a9\u0644\u0627\u0633 \u0628\u0647 \u062a\u0631\u062a\u06cc\u0628 \u0627\u0639\u0644\u0627\u0646 \u0627\u0631\u0632\u06cc\u0627\u0628\u06cc \u0645\u06cc \u0634\u0648\u0646\u062f. \u0627\u06af\u0631 \u06a9\u0644\u06cc\u062f \u062e\u0635\u0648\u0635\u06cc\u062a \u0645\u062d\u0627\u0633\u0628\u0647 \u0634\u0648\u062f\u060c \u0639\u0628\u0627\u0631\u062a \u0645\u062d\u0627\u0633\u0628\u0647 \u0634\u062f\u0647 \u0628\u0627 \u0627\u06cc\u0646 \u0645\u0642\u062f\u0627\u0631 \u0628\u0631 \u0631\u0648\u06cc \u0627\u06cc\u0646 \u0645\u0642\u062f\u0627\u0631 \u062a\u0646\u0638\u06cc\u0645 \u0645\u06cc \u0634\u0648\u062f \u06a9\u0647 \u06a9\u0644\u0627\u0633 \u0631\u0627 \u0627\u062d\u0627\u0637\u0647 \u06a9\u0631\u062f\u0647 \u0627\u0633\u062a (\u0646\u0647 \u062e\u0648\u062f \u06a9\u0644\u0627\u0633). \u0647\u06cc\u0686 \u06cc\u06a9 \u0627\u0632 \u0627\u0631\u0632\u0634 \u0647\u0627\u06cc \u062f\u0627\u0631\u0627\u06cc\u06cc \u0647\u0646\u0648\u0632 \u0627\u0631\u0632\u06cc\u0627\u0628\u06cc \u0646\u0634\u062f\u0647 \u0627\u0633\u062a.<\/li>\n
    4. \u0631\u0648\u0634 \u0647\u0627 \u0648 \u0644\u0648\u0627\u0632\u0645 \u062c\u0627\u0646\u0628\u06cc \u0628\u0647 \u062a\u0631\u062a\u06cc\u0628 \u0627\u0639\u0644\u0627\u0645 \u0646\u0635\u0628 \u0645\u06cc \u0634\u0648\u0646\u062f. \u0645\u062a\u062f\u0647\u0627\u06cc \u0646\u0645\u0648\u0646\u0647 \u0648 \u0627\u0628\u0632\u0627\u0631\u0647\u0627\u06cc \u062f\u0633\u062a\u0631\u0633\u06cc \u0628\u0631 \u0631\u0648\u06cc \u0648\u06cc\u0698\u06af\u06cc \u0646\u0645\u0648\u0646\u0647 \u0627\u0648\u0644\u06cc\u0647 \u06a9\u0644\u0627\u0633 \u0641\u0639\u0644\u06cc \u0648 \u0645\u062a\u062f\u0647\u0627\u06cc \u0627\u0633\u062a\u0627\u062a\u06cc\u06a9 \u0648 \u0627\u0628\u0632\u0627\u0631\u0647\u0627\u06cc \u062f\u0633\u062a\u0631\u0633\u06cc \u0628\u0631 \u0631\u0648\u06cc \u062e\u0648\u062f \u06a9\u0644\u0627\u0633 \u0646\u0635\u0628 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f. \u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u0646\u0645\u0648\u0646\u0647 \u062e\u0635\u0648\u0635\u06cc \u0648 \u0627\u0628\u0632\u0627\u0631\u0647\u0627\u06cc \u062f\u0633\u062a\u0631\u0633\u06cc \u0630\u062e\u06cc\u0631\u0647 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f \u062a\u0627 \u0628\u0639\u062f\u0627\u064b \u0645\u0633\u062a\u0642\u06cc\u0645\u0627\u064b \u0631\u0648\u06cc \u0646\u0645\u0648\u0646\u0647 \u0646\u0635\u0628 \u0634\u0648\u0646\u062f. \u0627\u06cc\u0646 \u0645\u0631\u062d\u0644\u0647 \u0642\u0627\u0628\u0644 \u0645\u0634\u0627\u0647\u062f\u0647 \u0646\u06cc\u0633\u062a.<\/li>\n
    5. \u06a9\u0644\u0627\u0633 \u0627\u06a9\u0646\u0648\u0646 \u0628\u0627 \u0646\u0645\u0648\u0646\u0647 \u0627\u0648\u0644\u06cc\u0647 \u0645\u0634\u062e\u0635 \u0634\u062f\u0647 \u062a\u0648\u0633\u0637 extensions \u0648 \u067e\u06cc\u0627\u062f\u0647 \u0633\u0627\u0632\u06cc \u0645\u0634\u062e\u0635 \u0634\u062f\u0647 \u062a\u0648\u0633\u0637 \u0633\u0627\u0632\u0646\u062f\u0647 \u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0645\u06cc \u0634\u0648\u062f. \u0628\u0631\u0627\u06cc \u062a\u0645\u0627\u0645 \u0645\u0631\u0627\u062d\u0644 \u0628\u0627\u0644\u0627\u060c \u0627\u06af\u0631 \u06cc\u06a9 \u0639\u0628\u0627\u0631\u062a \u0627\u0631\u0632\u06cc\u0627\u0628\u06cc \u0634\u062f\u0647 \u0633\u0639\u06cc \u06a9\u0646\u062f \u0628\u0647 \u0646\u0627\u0645 \u06a9\u0644\u0627\u0633 \u062f\u0633\u062a\u0631\u0633\u06cc \u067e\u06cc\u062f\u0627 \u06a9\u0646\u062f\u060c \u06cc\u06a9 ReferenceError \u067e\u0631\u062a\u0627\u0628 \u0645\u06cc \u0634\u0648\u062f \u0632\u06cc\u0631\u0627 \u06a9\u0644\u0627\u0633 \u0647\u0646\u0648\u0632 \u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0646\u0634\u062f\u0647 \u0627\u0633\u062a.<\/li>\n
    6. \u0645\u0642\u0627\u062f\u06cc\u0631 \u0639\u0646\u0627\u0635\u0631 \u06a9\u0644\u0627\u0633 \u0628\u0647 \u062a\u0631\u062a\u06cc\u0628 \u0627\u0639\u0644\u0627\u0646 \u0627\u0631\u0632\u06cc\u0627\u0628\u06cc \u0645\u06cc \u0634\u0648\u0646\u062f:<\/li>\n<\/ol>\n
        \n
      • \u0628\u0631\u0627\u06cc \u0647\u0631 \u0641\u06cc\u0644\u062f \u0646\u0645\u0648\u0646\u0647 (\u0639\u0645\u0648\u0645\u06cc \u06cc\u0627 \u062e\u0635\u0648\u0635\u06cc)\u060c \u0639\u0628\u0627\u0631\u062a \u0627\u0648\u0644\u06cc\u0647 \u0633\u0627\u0632 \u0622\u0646 \u0630\u062e\u06cc\u0631\u0647 \u0645\u06cc \u0634\u0648\u062f. \u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0627\u0648\u0644\u06cc\u0647 \u062f\u0631 \u0647\u0646\u06af\u0627\u0645 \u0627\u06cc\u062c\u0627\u062f \u0646\u0645\u0648\u0646\u0647\u060c \u062f\u0631 \u0634\u0631\u0648\u0639 \u0633\u0627\u0632\u0646\u062f\u0647 (\u0628\u0631\u0627\u06cc \u06a9\u0644\u0627\u0633 \u0647\u0627\u06cc \u067e\u0627\u06cc\u0647) \u06cc\u0627 \u0628\u0644\u0627\u0641\u0627\u0635\u0644\u0647 \u0642\u0628\u0644 \u0627\u0632 \u0628\u0627\u0632\u06af\u0634\u062a \u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc super() (\u0628\u0631\u0627\u06cc \u06a9\u0644\u0627\u0633 \u0647\u0627\u06cc \u0645\u0634\u062a\u0642 \u0634\u062f\u0647) \u0627\u0631\u0632\u06cc\u0627\u0628\u06cc \u0645\u06cc \u0634\u0648\u062f.<\/li>\n
      • \u0628\u0631\u0627\u06cc \u0647\u0631 \u0641\u06cc\u0644\u062f \u062b\u0627\u0628\u062a (\u0639\u0645\u0648\u0645\u06cc \u06cc\u0627 \u062e\u0635\u0648\u0635\u06cc)\u060c \u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0622\u0646 \u0628\u0627 \u0627\u06cc\u0646 \u0645\u062c\u0645\u0648\u0639\u0647 \u0628\u0647 \u062e\u0648\u062f \u06a9\u0644\u0627\u0633 \u0627\u0631\u0632\u06cc\u0627\u0628\u06cc \u0645\u06cc\u200c\u0634\u0648\u062f \u0648 \u0648\u06cc\u0698\u06af\u06cc \u0631\u0648\u06cc \u06a9\u0644\u0627\u0633 \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc\u200c\u0634\u0648\u062f.<\/li>\n
      • \u0628\u0644\u0648\u06a9 \u0647\u0627\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0633\u0627\u0632\u06cc \u0627\u0633\u062a\u0627\u062a\u06cc\u06a9 \u0628\u0627 \u0627\u06cc\u0646 \u0645\u062c\u0645\u0648\u0639\u0647 \u062f\u0631 \u062e\u0648\u062f \u06a9\u0644\u0627\u0633 \u0627\u0631\u0632\u06cc\u0627\u0628\u06cc \u0645\u06cc \u0634\u0648\u0646\u062f.<\/li>\n<\/ul>\n
        \u0646\u0645\u0648\u0646\u0647 \u0647\u0627<\/h2>\n
        \u0627\u062a\u0635\u0627\u0644 \u0627\u06cc\u0646 \u0628\u0627 \u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u0646\u0645\u0648\u0646\u0647 \u0648 \u0627\u0633\u062a\u0627\u062a\u06cc\u06a9<\/h5>\n
        \u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 \u06cc\u06a9 \u0645\u062a\u062f \u0627\u0633\u062a\u0627\u062a\u06cc\u06a9 \u06cc\u0627 \u0646\u0645\u0648\u0646\u0647 \u0628\u062f\u0648\u0646 \u0645\u0642\u062f\u0627\u0631 \u0628\u0631\u0627\u06cc \u0622\u0646 \u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc \u0645\u06cc \u0634\u0648\u062f\u060c \u0645\u062b\u0644\u0627\u064b \u0628\u0627 \u0627\u062e\u062a\u0635\u0627\u0635 \u0645\u062a\u062f \u0628\u0647 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u0648 \u0633\u067e\u0633 \u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc \u0622\u0646\u060c \u0627\u06cc\u0646 \u0645\u0642\u062f\u0627\u0631 \u062f\u0631 \u062f\u0627\u062e\u0644 \u0645\u062a\u062f \u062a\u0639\u0631\u06cc\u0641 \u0646\u0634\u062f\u0647 \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f. \u0627\u06cc\u0646 \u0631\u0641\u062a\u0627\u0631 \u06cc\u06a9\u0633\u0627\u0646 \u0627\u0633\u062a \u062d\u062a\u06cc \u0627\u06af\u0631 \u062f\u0633\u062a\u0648\u0631\u0627\u0644\u0639\u0645\u0644 “\u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0633\u062e\u062a” \u0648\u062c\u0648\u062f \u0646\u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f\u060c \u0632\u06cc\u0631\u0627 \u06a9\u062f \u062f\u0631\u0648\u0646 \u0628\u062f\u0646\u0647 \u06a9\u0644\u0627\u0633 \u0647\u0645\u06cc\u0634\u0647 \u062f\u0631 \u062d\u0627\u0644\u062a \u0633\u062e\u062a \u0627\u062c\u0631\u0627 \u0645\u06cc \u0634\u0648\u062f.<\/p>\n
        \n
        class Animal {\r\nspeak() {\r\nreturn this;\r\n}\r\nstatic eat() {\r\nreturn this;\r\n}\r\n}\r\nconst obj = new Animal();\r\nobj.speak(); \/\/ the Animal object\r\nconst speak = obj.speak;\r\nspeak(); \/\/ undefined\r\nAnimal.eat(); \/\/ class Animal\r\nconst eat = Animal.eat;\r\neat(); \/\/ undefined<\/code><\/pre>\n<\/div>\n
        \u0627\u06af\u0631 \u0645\u0648\u0627\u0631\u062f \u0641\u0648\u0642 \u0631\u0627 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0646\u062d\u0648 \u0633\u0646\u062a\u06cc \u0645\u0628\u062a\u0646\u06cc \u0628\u0631 \u062a\u0627\u0628\u0639 \u062f\u0631 \u062d\u0627\u0644\u062a \u063a\u06cc\u0631 \u062f\u0642\u06cc\u0642 \u0628\u0627\u0632\u0646\u0648\u06cc\u0633\u06cc \u06a9\u0646\u06cc\u0645\u060c \u0622\u0646\u06af\u0627\u0647 \u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc \u0647\u0627\u06cc \u0627\u06cc\u0646 \u0631\u0648\u0634 \u0628\u0647 \u0637\u0648\u0631 \u062e\u0648\u062f\u06a9\u0627\u0631 \u0628\u0647 globalThis \u0645\u062d\u062f\u0648\u062f \u0645\u06cc \u0634\u0648\u0646\u062f. \u062f\u0631 \u062d\u0627\u0644\u062a \u0633\u062e\u062a\u060c \u0645\u0642\u062f\u0627\u0631 \u0627\u06cc\u0646 \u0628\u0647 \u0635\u0648\u0631\u062a \u062a\u0639\u0631\u06cc\u0641 \u0646\u0634\u062f\u0647 \u0628\u0627\u0642\u06cc \u0645\u06cc \u0645\u0627\u0646\u062f.<\/p>\n
        \n
        function Animal() {}\r\nAnimal.prototype.speak = function () {\r\nreturn this;\r\n};\r\nAnimal.eat = function () {\r\nreturn this;\r\n};\r\nconst obj = new Animal();\r\nconst speak = obj.speak;\r\nspeak(); \/\/ global object (in non\u2013strict mode)\r\nconst eat = Animal.eat;\r\neat(); \/\/ global object (in non-strict mode)<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"Einf\u00fchrung: Klassen sind eine Vorlage zum Erstellen von Objekten. Sie kapseln Daten mit Code, um\u2026","protected":false},"author":1,"featured_media":16032,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"Class \u0647\u0627 \u062f\u0631 JavaScript","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","_yoast_wpseo_canonical":"","_yoast_wpseo_opengraph-description":"","_yoast_wpseo_opengraph-image":"","_yoast_wpseo_twitter-description":"","_yoast_wpseo_twitter-image":"","_yoast_wpseo_focuskeywords":"","_yoast_wpseo_primary_category":"193","footnotes":""},"categories":[193,363],"tags":[384,435],"class_list":{"0":"post-16031","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-tutorials","8":"category-programming","9":"tag-java-script","10":"tag-programming"},"yoast_head":"\nClass \u0647\u0627 \u062f\u0631 JavaScript - \u0628\u0644\u0627\u06af ITPiran<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.itpiran.net\/blog\/de\/tutorials\/javascript-reference-classes\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Class \u0647\u0627 \u062f\u0631 JavaScript - 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