\u062f\u0631 \u0627\u067e\u0644\u06cc\u06a9\u06cc\u0634\u0646\u200c\u0647\u0627\u06cc React \u0645\u0639\u0645\u0648\u0644\u0627\u064b \u0644\u0627\u0632\u0645 \u0627\u0633\u062a \u0628\u0647 \u0631\u0648\u06cc\u062f\u0627\u062f\u0647\u0627\u06cc \u0645\u062e\u062a\u0644\u0641\u06cc \u06a9\u0647 \u062f\u0631 DOM \u06cc\u0627 \u0634\u06cc\u0621 \u062f\u0631 React \u0628\u0647\u062a\u0631\u06cc\u0646 \u0631\u0648\u0634 \u0628\u0631\u0627\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a \u0627\u06cc\u0646 \u0646\u0648\u0639 \u0631\u0648\u06cc\u062f\u0627\u062f\u0647\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 Hook\u0647\u0627\u06cc\u06cc \u0645\u0627\u0646\u0646\u062f \u062f\u0631 \u0627\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647 \u0628\u0627 \u0646\u062d\u0648\u0647 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0631\u0648\u06cc\u062f\u0627\u062f\u0647\u0627\u06cc DOM \u0648 Window \u062f\u0631 React \u0622\u0634\u0646\u0627 \u0645\u06cc\u200c\u0634\u0648\u06cc\u0645.<\/p>\n \u062f\u0631 React \u0645\u0639\u0645\u0648\u0644\u0627\u064b \u0631\u0648\u06cc\u062f\u0627\u062f\u0647\u0627 \u0631\u0627 \u0645\u0633\u062a\u0642\u06cc\u0645\u0627\u064b \u0631\u0648\u06cc \u0639\u0646\u0627\u0635\u0631 JSX \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u06a9\u0646\u06cc\u0645:<\/p>\n \u0627\u0645\u0627 \u0628\u0631\u062e\u06cc \u0631\u0648\u06cc\u062f\u0627\u062f\u0647\u0627 \u0645\u0633\u062a\u0642\u06cc\u0645\u0627\u064b \u0628\u0647 \u0639\u0646\u0627\u0635\u0631 JSX \u0645\u062a\u0635\u0644 \u0646\u0645\u06cc\u200c\u0634\u0648\u0646\u062f \u0648 \u0628\u0627\u06cc\u062f \u0631\u0648\u06cc \u0627\u0634\u06cc\u0627\u06cc\u06cc \u0645\u062b\u0644 \u0628\u0631\u0627\u06cc \u0645\u062b\u0627\u0644:<\/p>\n \u062f\u0631 \u0686\u0646\u06cc\u0646 \u0634\u0631\u0627\u06cc\u0637\u06cc \u0628\u0627\u06cc\u062f \u0627\u0632 \u06cc\u06a9\u06cc \u0627\u0632 \u0631\u0627\u06cc\u062c\u200c\u062a\u0631\u06cc\u0646 \u0645\u062b\u0627\u0644\u200c\u0647\u0627\u060c \u062a\u0634\u062e\u06cc\u0635 \u062a\u063a\u06cc\u06cc\u0631 \u0627\u0646\u062f\u0627\u0632\u0647 \u067e\u0646\u062c\u0631\u0647 \u0645\u0631\u0648\u0631\u06af\u0631 \u0627\u0633\u062a.<\/p>\n \u062f\u0631 \u0627\u06cc\u0646 \u0645\u062b\u0627\u0644:<\/p>\n \u0628\u0631\u0627\u06cc \u062a\u0634\u062e\u06cc\u0635 \u0627\u0633\u06a9\u0631\u0648\u0644 \u0634\u062f\u0646 \u0635\u0641\u062d\u0647 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f \u0627\u0632 \u0631\u0648\u06cc\u062f\u0627\u062f \u062f\u0631 \u0627\u06cc\u0646 \u0645\u062b\u0627\u0644 \u0645\u0648\u0642\u0639\u06cc\u062a \u0641\u0639\u0644\u06cc \u0627\u0633\u06a9\u0631\u0648\u0644 \u0635\u0641\u062d\u0647 \u0646\u0645\u0627\u06cc\u0634 \u062f\u0627\u062f\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f.<\/p>\n \u06af\u0627\u0647\u06cc \u0644\u0627\u0632\u0645 \u0627\u0633\u062a \u0641\u0634\u0631\u062f\u0647 \u0634\u062f\u0646 \u06a9\u0644\u06cc\u062f\u0647\u0627\u06cc \u0635\u0641\u062d\u0647\u200c\u06a9\u0644\u06cc\u062f \u0631\u0627 \u062a\u0634\u062e\u06cc\u0635 \u062f\u0647\u06cc\u062f.<\/p>\n \u0645\u062b\u0644\u0627\u064b \u0627\u06af\u0631 \u0628\u062e\u0648\u0627\u0647\u06cc\u062f \u0628\u0627 \u0641\u0634\u0631\u062f\u0646 \u06a9\u0644\u06cc\u062f Escape \u06cc\u06a9 \u0645\u0648\u062f\u0627\u0644 \u0631\u0627 \u0628\u0628\u0646\u062f\u06cc\u062f:<\/p>\nwindow<\/code> \u0631\u062e \u0645\u06cc\u200c\u062f\u0647\u0646\u062f \u0648\u0627\u06a9\u0646\u0634 \u0646\u0634\u0627\u0646 \u062f\u0647\u06cc\u062f. \u0628\u0631\u0627\u06cc \u0645\u062b\u0627\u0644 \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u0628\u062e\u0648\u0627\u0647\u06cc\u062f:<\/p>\n\n
useEffect<\/code> \u0627\u0633\u062a \u062a\u0627 \u0628\u062a\u0648\u0627\u0646\u06cc\u062f \u0647\u0646\u06af\u0627\u0645 Mount \u0634\u062f\u0646 \u06a9\u0627\u0645\u067e\u0648\u0646\u0646\u062a \u0631\u0648\u06cc\u062f\u0627\u062f\u0647\u0627 \u0631\u0627 \u062b\u0628\u062a \u06a9\u0631\u062f\u0647 \u0648 \u0647\u0646\u06af\u0627\u0645 Unmount \u0634\u062f\u0646 \u0622\u0646\u200c\u0647\u0627 \u0631\u0627 \u062d\u0630\u0641 \u06a9\u0646\u06cc\u062f.<\/p>\n
\n\u062a\u0641\u0627\u0648\u062a \u0631\u0648\u06cc\u062f\u0627\u062f\u0647\u0627\u06cc React \u0648 \u0631\u0648\u06cc\u062f\u0627\u062f\u0647\u0627\u06cc DOM<\/h2>\n
function<\/span> Button<\/span>() {\r\n return<\/span> (\r\n <button<\/span> onClick<\/span>=<\/span>{() => console<\/span>.<\/span>log(\"Clicked!\"<\/span>)}><\/span>\r\n Click Me\r\n <\/button><\/span>\r\n );\r\n}<\/code><\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\nwindow<\/code> \u06cc\u0627 document<\/code> \u062b\u0628\u062a \u0634\u0648\u0646\u062f.<\/p>\nwindow<\/span>.<\/span>addEventListener(\"resize\"<\/span>, handleResize<\/span>);<\/code><\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\nuseEffect<\/code> \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u0645.<\/p>\n
\n\u0645\u062f\u06cc\u0631\u06cc\u062a \u0631\u0648\u06cc\u062f\u0627\u062f Resize \u067e\u0646\u062c\u0631\u0647<\/h2>\n
\u0645\u062b\u0627\u0644<\/h3>\n
import<\/span> { useEffect<\/span>, useState<\/span> } from<\/span> \"react\"<\/span>;\r\n\r\nfunction<\/span> WindowSize<\/span>() {\r\n const<\/span> [width<\/span>, setWidth<\/span>] =<\/span> useState<\/span>(window<\/span>.<\/span>innerWidth);\r\n\r\n useEffect<\/span>(() => {\r\n function<\/span> handleResize<\/span>() {\r\n setWidth<\/span>(window<\/span>.<\/span>innerWidth);\r\n }\r\n\r\n window<\/span>.<\/span>addEventListener(\"resize\"<\/span>, handleResize<\/span>);\r\n\r\n return<\/span> () => {\r\n window<\/span>.<\/span>removeEventListener(\"resize\"<\/span>, handleResize<\/span>);\r\n };\r\n }, []);\r\n\r\n return<\/span> <h2><\/span>Width: {width<\/span>}px<\/h2><\/span>;\r\n}<\/code><\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\u0646\u062d\u0648\u0647 \u0639\u0645\u0644\u06a9\u0631\u062f<\/h3>\n
\n
\n\u0645\u062f\u06cc\u0631\u06cc\u062a \u0631\u0648\u06cc\u062f\u0627\u062f Scroll<\/h2>\n
scroll<\/code> \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f.<\/p>\nimport<\/span> { useEffect<\/span>, useState<\/span> } from<\/span> \"react\"<\/span>;\r\n\r\nfunction<\/span> ScrollTracker<\/span>() {\r\n const<\/span> [scrollY<\/span>, setScrollY<\/span>] =<\/span> useState<\/span>(0<\/span>);\r\n\r\n useEffect<\/span>(() => {\r\n const<\/span> handleScroll<\/span> =<\/span> () => {\r\n setScrollY<\/span>(window<\/span>.<\/span>scrollY);\r\n };\r\n\r\n window<\/span>.<\/span>addEventListener(\"scroll\"<\/span>, handleScroll<\/span>);\r\n\r\n return<\/span> () => {\r\n window<\/span>.<\/span>removeEventListener(\"scroll\"<\/span>, handleScroll<\/span>);\r\n };\r\n }, []);\r\n\r\n return<\/span> <p><\/span>Scroll Position: {scrollY<\/span>}px<\/p><\/span>;\r\n}<\/code><\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
\n\u0645\u062f\u06cc\u0631\u06cc\u062a \u0631\u0648\u06cc\u062f\u0627\u062f Keyboard<\/h2>\n
import<\/span> { useEffect<\/span> } from<\/span> \"react\"<\/span>;\r\n\r\nfunction<\/span> KeyboardListener<\/span>() {\r\n useEffect<\/span>(() => {\r\n const<\/span> handleKeyDown<\/span> =<\/span> (event<\/span>) => {\r\n console<\/span>.<\/span>log(\"Pressed:\"<\/span>, event<\/span>.<\/span>key);\r\n };\r\n\r\n window<\/span>.<\/span>addEventListener(\"keydown\"<\/span>, handleKeyDown<\/span>);\r\n\r\n return<\/span> () => {\r\n window<\/span>.<\/span>removeEventListener(\"keydown\"<\/span>, handleKeyDown<\/span>);\r\n };\r\n }, []);\r\n\r\n return<\/span> <h2><\/span>Press any key<\/h2><\/span>;\r\n}<\/code><\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\u062a\u0634\u062e\u06cc\u0635 \u06a9\u0644\u06cc\u062f \u062e\u0627\u0635<\/h3>\n
useEffect<\/span>(() => {\r\n const<\/span> handleKeyDown<\/span> =<\/span> (event<\/span>) => {\r\n