{"id":1133,"date":"2026-03-25T17:53:03","date_gmt":"2026-03-25T17:53:03","guid":{"rendered":"https:\/\/www.visualize-ai.com\/vn\/common-state-diagram-mistakes-fixes\/"},"modified":"2026-03-24T12:22:09","modified_gmt":"2026-03-24T12:22:09","slug":"common-state-diagram-mistakes-fixes","status":"publish","type":"post","link":"https:\/\/www.visualize-ai.com\/vn\/common-state-diagram-mistakes-fixes\/","title":{"rendered":"Nh\u1eefng Sai L\u1ea7m Ph\u1ed5 Bi\u1ebfn v\u1ec1 Bi\u1ec3u \u0110\u1ed3 Tr\u1ea1ng Th\u00e1i Khi\u1ebfn Ng\u01b0\u1eddi M\u1edbi B\u1ecb M\u1eafc L\u1eabn v\u00e0 C\u00e1ch Kh\u1eafc Ph\u1ee5c"},"content":{"rendered":"<p>Vi\u1ec7c thi\u1ebft k\u1ebf bi\u1ec3u \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i l\u00e0 m\u1ed9t k\u1ef9 n\u0103ng c\u01a1 b\u1ea3n \u0111\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 ai tham gia v\u00e0o ki\u1ebfn tr\u00fac ph\u1ea7n m\u1ec1m, logic ph\u1ea7n c\u1ee9ng ho\u1eb7c m\u00f4 h\u00ecnh h\u00f3a quy tr\u00ecnh ph\u1ee9c t\u1ea1p. C\u00e1c bi\u1ec3u \u0111\u1ed3 n\u00e0y tr\u1ef1c quan h\u00f3a c\u00e1ch m\u1ed9t h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng theo th\u1eddi gian, ph\u1ea3n \u1ee9ng v\u1edbi c\u00e1c s\u1ef1 ki\u1ec7n v\u00e0 \u0111i\u1ec1u ki\u1ec7n thay \u0111\u1ed5i. Tuy nhi\u00ean, d\u00f9 c\u00f3 nhi\u1ec1u l\u1ee3i \u00edch, nhi\u1ec1u chuy\u00ean gia v\u1eabn m\u1eafc ph\u1ea3i nh\u1eefng b\u1eaby c\u1ee5 th\u1ec3 l\u00e0m m\u1edd logic v\u00e0 g\u00e2y ra l\u1ed7i. H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 c\u00e1c l\u1ed7i ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong k\u00fd hi\u1ec7u bi\u1ec3u \u0111\u1ed3 tr\u1ea1ng th\u00e1i v\u00e0 cung c\u1ea5p c\u00e1c chi\u1ebfn l\u01b0\u1ee3c r\u00f5 r\u00e0ng, c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c \u0111\u1ec3 s\u1eeda ch\u1eefa ch\u00fang.<\/p>\n<p>Cho d\u00f9 b\u1ea1n \u0111ang x\u00e1c \u0111\u1ecbnh v\u00f2ng \u0111\u1eddi c\u1ee7a m\u1ed9t phi\u00ean ng\u01b0\u1eddi d\u00f9ng, \u0111i\u1ec1u khi\u1ec3n m\u1ed9t thi\u1ebft b\u1ecb nh\u00fang, hay m\u00f4 h\u00ecnh h\u00f3a quy tr\u00ecnh kinh doanh, s\u1ef1 r\u00f5 r\u00e0ng l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t. M\u1ed9t bi\u1ec3u \u0111\u1ed3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng t\u1ed1t s\u1ebd gi\u1ea3m s\u1ef1 m\u01a1 h\u1ed3. M\u1ed9t bi\u1ec3u \u0111\u1ed3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng k\u00e9m s\u1ebd t\u1ea1o ra l\u1ed9 tr\u00ecnh d\u1eabn \u0111\u1ebfn th\u1ea5t b\u1ea1i. Ch\u00fang ta s\u1ebd xem x\u00e9t s\u00e2u s\u1eafc nh\u1eefng c\u00e1i b\u1eaby n\u00e0y, \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c m\u00f4 h\u00ecnh c\u1ee7a b\u1ea1n l\u00e0 v\u1eefng ch\u1eafc, d\u1ec5 b\u1ea3o tr\u00ec v\u00e0 ch\u00ednh x\u00e1c.<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Infographic ho\u1ea1t h\u00ecnh minh h\u1ecda 7 l\u1ed7i ph\u1ed5 bi\u1ebfn m\u00e0 ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u th\u01b0\u1eddng m\u1eafc ph\u1ea3i khi v\u1ebd s\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c: thi\u1ebfu tr\u1ea1ng th\u00e1i kh\u1edfi \u0111\u1ea7u\/k\u1ebft th\u00fac, chuy\u1ec3n \u0111\u1ed5i ch\u01b0a x\u00e1c \u0111\u1ecbnh, k\u00edch ho\u1ea1t s\u1ef1 ki\u1ec7n kh\u00f4ng r\u00f5 r\u00e0ng, tr\u1ea1ng th\u00e1i qu\u00e1 ph\u1ee9c t\u1ea1p, thi\u1ebfu \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7, s\u1eed d\u1ee5ng ph\u00e2n c\u1ea5p sai v\u00e0 nh\u1ea7m l\u1eabn v\u1ec1 chuy\u1ec3n \u0111\u1ed5i t\u1ef1 th\u00e2n, k\u00e8m theo so s\u00e1nh tr\u1ef1c quan gi\u1eefa v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p c\u00f9ng danh s\u00e1ch ki\u1ec3m tra x\u00e1c minh nhanh cho c\u00e1c ki\u1ebfn tr\u00fac s\u01b0 v\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m\" decoding=\"async\" src=\"https:\/\/www.visualize-ai.com\/wp-content\/uploads\/2026\/03\/cartoon-infographic-state-diagram-mistakes-fixes-16x9-1.jpg\"\/><\/figure>\n<\/div>\n<h2>Hi\u1ec3u v\u1ec1 Bi\u1ec3u \u0110\u1ed3 M\u00e1y Tr\u1ea1ng Th\u00e1i \ud83d\udcca<\/h2>\n<p>Bi\u1ec3u \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i, th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 bi\u1ec3u \u0111\u1ed3 tr\u1ea1ng th\u00e1i ho\u1eb7c bi\u1ec3u \u0111\u1ed3 chuy\u1ec3n \u0111\u1ed5i tr\u1ea1ng th\u00e1i, bi\u1ec3u di\u1ec5n c\u00e1c tr\u1ea1ng th\u00e1i ri\u00eang bi\u1ec7t c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 c\u00e1c chuy\u1ec3n \u0111\u1ed5i gi\u1eefa ch\u00fang. M\u1ed7i tr\u1ea1ng th\u00e1i x\u00e1c \u0111\u1ecbnh m\u1ed9t \u0111i\u1ec1u ki\u1ec7n ho\u1eb7c ch\u1ebf \u0111\u1ed9 c\u1ee5 th\u1ec3 trong v\u00f2ng \u0111\u1eddi c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng. C\u00e1c chuy\u1ec3n \u0111\u1ed5i x\u1ea3y ra khi m\u1ed9t s\u1ef1 ki\u1ec7n c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t, mi\u1ec5n l\u00e0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 li\u00ean quan \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng.<\/p>\n<p>C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh bao g\u1ed3m:<\/p>\n<ul>\n<li>\n<p><strong>Tr\u1ea1ng th\u00e1i:<\/strong> C\u00e1c n\u00fat bi\u1ec3u di\u1ec5n c\u00e1c \u0111i\u1ec1u ki\u1ec7n (v\u00ed d\u1ee5: &#8220;<em>Ch\u1edd<\/em>, <em>\u0110ang x\u1eed l\u00fd<\/em>, <em>Ho\u00e0n th\u00e0nh<\/em>).<\/p>\n<\/li>\n<li>\n<p><strong>Chuy\u1ec3n \u0111\u1ed5i:<\/strong> C\u00e1c m\u0169i t\u00ean n\u1ed1i c\u00e1c tr\u1ea1ng th\u00e1i, ch\u1ec9 ra s\u1ef1 di chuy\u1ec3n.<\/p>\n<\/li>\n<li>\n<p><strong>S\u1ef1 ki\u1ec7n:<\/strong> C\u00e1c t\u00e1c nh\u00e2n kh\u1edfi t\u1ea1o chuy\u1ec3n \u0111\u1ed5i (v\u00ed d\u1ee5: &#8220;<em>Nh\u1ea5n n\u00fat<\/em>, <em>H\u1ebft th\u1eddi gian<\/em>).<\/p>\n<\/li>\n<li>\n<p><strong>H\u00e0nh \u0111\u1ed9ng:<\/strong> C\u00e1c ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n trong qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i ho\u1eb7c b\u00ean trong m\u1ed9t tr\u1ea1ng th\u00e1i.<\/p>\n<\/li>\n<li>\n<p><strong>Tr\u1ea1ng th\u00e1i Kh\u1edfi \u0111\u1ea7u\/K\u1ebft th\u00fac:<\/strong> \u0110i\u1ec3m v\u00e0o v\u00e0 \u0111i\u1ec3m ra cho bi\u1ec3u \u0111\u1ed3.<\/p>\n<\/li>\n<\/ul>\n<p>Khi c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y kh\u00f4ng \u0111\u01b0\u1ee3c c\u0103n ch\u1ec9nh, h\u00e0nh vi k\u1ebft qu\u1ea3 c\u1ee7a h\u1ec7 th\u1ed1ng tr\u1edf n\u00ean kh\u00f4ng th\u1ec3 \u0111o\u00e1n tr\u01b0\u1edbc. H\u00e3y c\u00f9ng ph\u00e2n t\u00edch nh\u1eefng sai l\u1ea7m c\u1ee5 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 nh\u1ea7m l\u1eabn n\u00e0y.<\/p>\n<h2>Sai l\u1ea7m 1: Thi\u1ebfu Tr\u1ea1ng th\u00e1i Kh\u1edfi \u0111\u1ea7u ho\u1eb7c K\u1ebft th\u00fac \ud83d\udeab<\/h2>\n<p>M\u1ed9t trong nh\u1eefng s\u01a1 su\u1ea5t quan tr\u1ecdng nh\u1ea5t l\u00e0 b\u1ecf qu\u00ean vi\u1ec7c x\u00e1c \u0111\u1ecbnh n\u01a1i h\u1ec7 th\u1ed1ng b\u1eaft \u0111\u1ea7u v\u00e0 n\u01a1i n\u00f3 k\u1ebft th\u00fac. Kh\u00f4ng c\u00f3 \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u r\u00f5 r\u00e0ng, h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 kh\u1edfi t\u1ea1o \u1edf tr\u1ea1ng th\u00e1i ch\u01b0a x\u00e1c \u0111\u1ecbnh, d\u1eabn \u0111\u1ebfn l\u1ed7i th\u1eddi gian ch\u1ea1y. T\u01b0\u01a1ng t\u1ef1, kh\u00f4ng c\u00f3 tr\u1ea1ng th\u00e1i k\u1ebft th\u00fac \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh, h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 \u0111i v\u00e0o v\u00f2ng l\u1eb7p v\u00f4 t\u1eadn ho\u1eb7c kh\u00f4ng gi\u1ea3i ph\u00f3ng t\u00e0i nguy\u00ean \u0111\u00fang c\u00e1ch.<\/p>\n<h3>V\u1ea5n \u0111\u1ec1<\/h3>\n<p>Ng\u01b0\u1eddi m\u1edbi th\u01b0\u1eddng v\u1ebd c\u00e1c tr\u1ea1ng th\u00e1i th\u00e0nh m\u1ed9t v\u00f2ng tr\u00f2n, k\u1ebft n\u1ed1i ch\u00fang m\u00e0 kh\u00f4ng x\u00e1c \u0111\u1ecbnh r\u00f5 lu\u1ed3ng \u0111i. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra s\u1ef1 m\u01a1 h\u1ed3 v\u1ec1 \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u. N\u1ebfu m\u1ed9t h\u1ec7 th\u1ed1ng kh\u1edfi t\u1ea1o t\u1ea1i <em>Tr\u1ea1ng th\u00e1i B<\/em> thay v\u00ec <em>Tr\u1ea1ng th\u00e1i A<\/em>, logic \u0111i\u1ec1u khi\u1ec3n <em>Tr\u1ea1ng th\u00e1i A<\/em> s\u1ebd kh\u00f4ng bao gi\u1edd \u0111\u01b0\u1ee3c th\u1ef1c thi.<\/p>\n<h3>Gi\u1ea3i ph\u00e1p<\/h3>\n<ul>\n<li>\n<p>Lu\u00f4n \u0111\u00e1nh d\u1ea5u r\u00f5 r\u00e0ng tr\u1ea1ng th\u00e1i kh\u1edfi \u0111\u1ea7u b\u1eb1ng m\u1ed9t h\u00ecnh tr\u00f2n \u0111en \u0111\u1eb7c ch\u1ec9 v\u1ec1 tr\u1ea1ng th\u00e1i logic \u0111\u1ea7u ti\u00ean.<\/p>\n<\/li>\n<li>\n<p>X\u00e1c \u0111\u1ecbnh m\u1ed9t tr\u1ea1ng th\u00e1i k\u1ebft th\u00fac (m\u1ed9t h\u00ecnh tr\u00f2n \u0111en \u0111\u1eb7c n\u1eb1m trong m\u1ed9t h\u00ecnh tr\u00f2n l\u1edbn h\u01a1n) cho c\u00e1c k\u1ecbch b\u1ea3n k\u1ebft th\u00fac.<\/p>\n<\/li>\n<li>\n<p>\u0110\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi \u0111\u01b0\u1eddng d\u1eabn cu\u1ed1i c\u00f9ng \u0111\u1ec1u d\u1eabn \u0111\u1ebfn \u0111i\u1ec3m k\u1ebft th\u00fac ho\u1eb7c m\u1ed9t tr\u1ea1ng th\u00e1i ch\u1edd h\u1ee3p l\u1ec7.<\/p>\n<\/li>\n<\/ul>\n<h2>L\u1ed7i 2: Chuy\u1ec3n \u0111\u1ed5i ch\u01b0a x\u00e1c \u0111\u1ecbnh ho\u1eb7c b\u1ecb thi\u1ebfu \ud83d\udea7<\/h2>\n<p>Bi\u1ec3u \u0111\u1ed3 tr\u1ea1ng th\u00e1i ph\u1ea3i t\u00ednh to\u00e1n t\u1ea5t c\u1ea3 c\u00e1c s\u1ef1 ki\u1ec7n h\u1ee3p l\u1ec7. N\u1ebfu m\u1ed9t tr\u1ea1ng th\u00e1i t\u1ed3n t\u1ea1i nh\u01b0ng kh\u00f4ng c\u00f3 chuy\u1ec3n \u0111\u1ed5i \u0111i ra cho m\u1ed9t s\u1ef1 ki\u1ec7n c\u1ee5 th\u1ec3, h\u1ec7 th\u1ed1ng s\u1ebd kh\u00f4ng bi\u1ebft ph\u1ea3n \u1ee9ng nh\u01b0 th\u1ebf n\u00e0o. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201cchuy\u1ec3n \u0111\u1ed5i ng\u1ea7m \u0111\u1ecbnh\u201d ho\u1eb7c l\u1ed7i trong vi\u1ec7c bao ph\u1ee7 logic.<\/p>\n<h3>V\u1ea5n \u0111\u1ec1<\/h3>\n<p>H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng m\u1ed9t m\u00e1y b\u00e1n h\u00e0ng t\u1ef1 \u0111\u1ed9ng \u0111ang \u1edf tr\u1ea1ng th\u00e1i <em>S\u1eb5n s\u00e0ng<\/em>. N\u1ebfu ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0a ti\u1ec1n v\u00e0o, n\u00f3 s\u1ebd chuy\u1ec3n sang <em>Ph\u00e1t h\u00e0ng<\/em>. Nh\u01b0ng n\u1ebfu ng\u01b0\u1eddi d\u00f9ng nh\u1ea5n <em>H\u1ee7y<\/em>? N\u1ebfu kh\u00f4ng c\u00f3 chuy\u1ec3n \u0111\u1ed5i n\u00e0o \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a cho <em>H\u1ee7y<\/em> khi \u0111ang \u1edf <em>S\u1eb5n s\u00e0ng<\/em>, m\u00e1y s\u1ebd b\u1ecf qua \u0111\u1ea7u v\u00e0o. Trong c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p, s\u1ef1 im l\u1eb7ng n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra th\u1ea3m h\u1ecda.<\/p>\n<h3>Gi\u1ea3i ph\u00e1p<\/h3>\n<ul>\n<li>\n<p>Ti\u1ebfn h\u00e0nh r\u00e0 so\u00e1t k\u1ef9 l\u01b0\u1ee1ng t\u1ea5t c\u1ea3 c\u00e1c s\u1ef1 ki\u1ec7n c\u00f3 th\u1ec3 x\u1ea3y ra cho t\u1eebng tr\u1ea1ng th\u00e1i.<\/p>\n<\/li>\n<li>\n<p>X\u00e1c \u0111\u1ecbnh c\u00e1c chuy\u1ec3n \u0111\u1ed5i r\u00f5 r\u00e0ng cho vi\u1ec7c x\u1eed l\u00fd l\u1ed7i ho\u1eb7c c\u00e1c \u0111\u1ea7u v\u00e0o kh\u00f4ng mong \u0111\u1ee3i.<\/p>\n<\/li>\n<li>\n<p>S\u1eed d\u1ee5ng m\u1ed9t chuy\u1ec3n \u0111\u1ed5i \u201cb\u1eaft m\u1ecdi tr\u01b0\u1eddng h\u1ee3p\u201d \u0111\u1ebfn <em>L\u1ed7i<\/em> ho\u1eb7c <em>\u0110\u1eb7t l\u1ea1i<\/em> tr\u1ea1ng th\u00e1i n\u1ebfu kh\u00f4ng c\u1ea7n x\u1eed l\u00fd c\u1ee5 th\u1ec3 cho m\u1ecdi tr\u01b0\u1eddng h\u1ee3p bi\u00ean.<\/p>\n<\/li>\n<\/ul>\n<h2>L\u1ed7i 3: K\u00edch ho\u1ea1t s\u1ef1 ki\u1ec7n kh\u00f4ng r\u00f5 r\u00e0ng \u26a0\ufe0f<\/h2>\n<p>C\u00e1c s\u1ef1 ki\u1ec7n ph\u1ea3i duy nh\u1ea5t v\u00e0 \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean r\u00f5 r\u00e0ng. Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c thu\u1eadt ng\u1eef chung chung nh\u01b0 <em>H\u00e0nh \u0111\u1ed9ng<\/em> ho\u1eb7c <em>X\u1eed l\u00fd<\/em> l\u00e0m t\u00ean s\u1ef1 ki\u1ec7n s\u1ebd g\u00e2y nh\u1ea7m l\u1eabn. H\u01a1n n\u1eefa, nhi\u1ec1u s\u1ef1 ki\u1ec7n k\u00edch ho\u1ea1t c\u00f9ng m\u1ed9t chuy\u1ec3n \u0111\u1ed5i m\u00e0 kh\u00f4ng c\u00f3 s\u1ef1 ph\u00e2n bi\u1ec7t c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111i\u1ec1u ki\u1ec7n tranh ch\u1ea5p ho\u1eb7c thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i kh\u00f4ng mong mu\u1ed1n.<\/p>\n<h3>V\u1ea5n \u0111\u1ec1<\/h3>\n<p>N\u1ebfu <em>S\u1ef1 ki\u1ec7n A<\/em> v\u00e0 <em>S\u1ef1 ki\u1ec7n B<\/em> c\u00f9ng k\u00edch ho\u1ea1t vi\u1ec7c chuy\u1ec3n sang <em>Tr\u1ea1ng th\u00e1i X<\/em>, nh\u01b0ng t\u1eeb c\u00e1c tr\u1ea1ng th\u00e1i kh\u00e1c nhau, s\u01a1 \u0111\u1ed3 c\u00f3 th\u1ec3 tr\u00f4ng r\u1ed1i r\u1eafm. N\u1eb7ng n\u1ec1 h\u01a1n, n\u1ebfu <em>S\u1ef1 ki\u1ec7n A<\/em> l\u00e0 t\u1eadp con c\u1ee7a <em>S\u1ef1 ki\u1ec7n B<\/em>, logic tr\u1edf n\u00ean m\u01a1 h\u1ed3. Nh\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng ph\u1ea3i \u0111\u1ea3m b\u1ea3o r\u1eb1ng k\u00edch ho\u1ea1t \u0111\u1ee7 r\u00f5 r\u00e0ng \u0111\u1ec3 b\u1ed9 x\u1eed l\u00fd c\u00f3 th\u1ec3 nh\u1eadn di\u1ec7n.<\/p>\n<h3>Gi\u1ea3i ph\u00e1p<\/h3>\n<ul>\n<li>\n<p>S\u1eed d\u1ee5ng c\u00e1c k\u1ebft h\u1ee3p \u0111\u1ed9ng t\u1eeb-danh t\u1eeb mang t\u00ednh m\u00f4 t\u1ea3 cho c\u00e1c s\u1ef1 ki\u1ec7n (v\u00ed d\u1ee5: <em>G\u1eedi \u0111\u01a1n h\u00e0ng<\/em> thay v\u00ec <em>G\u1eedi<\/em>).<\/p>\n<\/li>\n<li>\n<p>\u0110\u1ea3m b\u1ea3o t\u00ean s\u1ef1 ki\u1ec7n nh\u1ea5t qu\u00e1n trong to\u00e0n b\u1ed9 s\u01a1 \u0111\u1ed3.<\/p>\n<\/li>\n<li>\n<p>Ghi l\u1ea1i ngu\u1ed3n g\u1ed1c c\u1ee7a s\u1ef1 ki\u1ec7n (nh\u1eadp t\u1eeb ng\u01b0\u1eddi d\u00f9ng, b\u1ed9 \u0111\u1ecbnh th\u1eddi h\u1ec7 th\u1ed1ng, API b\u00ean ngo\u00e0i).<\/p>\n<\/li>\n<\/ul>\n<h2>L\u1ed7i 4: L\u00e0m ph\u1ee9c t\u1ea1p h\u00f3a c\u00e1c tr\u1ea1ng th\u00e1i (T\u1ea3i nh\u1eadn th\u1ee9c) \ud83e\udde0<\/h2>\n<p>M\u00e1y tr\u1ea1ng th\u00e1i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a logic, kh\u00f4ng ph\u1ea3i \u0111\u1ec3 l\u00e0m ph\u1ee9c t\u1ea1p n\u00f3. M\u1ed9t l\u1ed7i ph\u1ed5 bi\u1ebfn l\u00e0 t\u1ea1o ra c\u00e1c tr\u1ea1ng th\u00e1i qu\u00e1 r\u1ed9ng ho\u1eb7c qu\u00e1 chi ti\u1ebft. N\u1ebfu m\u1ed9t tr\u1ea1ng th\u00e1i ch\u1ee9a qu\u00e1 nhi\u1ec1u logic n\u1ed9i b\u1ed9, n\u00f3 s\u1ebd kh\u00f4ng c\u00f2n l\u00e0 m\u1ed9t tr\u1ea1ng th\u00e1i n\u1eefa m\u00e0 tr\u1edf th\u00e0nh m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh nh\u1ecf. Ng\u01b0\u1ee3c l\u1ea1i, qu\u00e1 nhi\u1ec1u tr\u1ea1ng th\u00e1i vi m\u00f4 s\u1ebd khi\u1ebfn s\u01a1 \u0111\u1ed3 tr\u1edf n\u00ean kh\u00f3 \u0111\u1ecdc.<\/p>\n<h3>V\u1ea5n \u0111\u1ec1<\/h3>\n<p>H\u00e3y xem x\u00e9t m\u1ed9t tr\u1ea1ng th\u00e1i c\u00f3 t\u00ean l\u00e0 &#8220;<em>X\u1eed l\u00fd<\/em>&#8220;. N\u1ebfu tr\u1ea1ng th\u00e1i n\u00e0y li\u00ean quan \u0111\u1ebfn vi\u1ec7c ghi d\u1eef li\u1ec7u v\u00e0o c\u01a1 s\u1edf d\u1eef li\u1ec7u, g\u1eedi th\u00f4ng b\u00e1o cho ng\u01b0\u1eddi d\u00f9ng v\u00e0 t\u1ea3i l\u00ean t\u1ec7p, th\u00ec n\u00f3 \u0111ang th\u1ef1c hi\u1ec7n qu\u00e1 nhi\u1ec1u c\u00f4ng vi\u1ec7c. \u0110i\u1ec1u n\u00e0y vi ph\u1ea1m Nguy\u00ean t\u1eafc Tr\u00e1ch nhi\u1ec7m \u0110\u01a1n l\u1ebb. N\u00f3 khi\u1ebfn vi\u1ec7c ki\u1ec3m th\u1eed tr\u1edf n\u00ean kh\u00f3 kh\u0103n v\u00ec b\u1ea1n kh\u00f4ng th\u1ec3 c\u00f4 l\u1eadp \u0111i\u1ec3m l\u1ed7i b\u00ean trong tr\u1ea1ng th\u00e1i \u0111\u00f3.<\/p>\n<h3>Gi\u1ea3i ph\u00e1p<\/h3>\n<ul>\n<li>\n<p>Ph\u00e2n r\u00e3 c\u00e1c tr\u1ea1ng th\u00e1i ph\u1ee9c t\u1ea1p th\u00e0nh c\u00e1c tr\u1ea1ng th\u00e1i con ho\u1eb7c c\u00e1c v\u00f9ng tr\u1ef1c giao.<\/p>\n<\/li>\n<li>\n<p>\u0110\u1ea3m b\u1ea3o m\u1ed7i tr\u1ea1ng th\u00e1i \u0111\u1ea1i di\u1ec7n cho m\u1ed9t \u0111i\u1ec1u ki\u1ec7n \u0111\u01a1n l\u1ebb v\u00e0 th\u1ed1ng nh\u1ea5t.<\/p>\n<\/li>\n<li>\n<p>S\u1eed d\u1ee5ng c\u00e1c tr\u1ea1ng th\u00e1i t\u1ed5ng h\u1ee3p \u0111\u1ec3 nh\u00f3m c\u00e1c h\u00e0nh vi li\u00ean quan m\u00e0 kh\u00f4ng l\u00e0m r\u1ed1i lu\u1ed3ng ch\u00ednh.<\/p>\n<\/li>\n<\/ul>\n<h2>L\u1ed7i 5: B\u1ecf qua c\u00e1c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 \ud83d\udee1\ufe0f<\/h2>\n<p>C\u00e1c chuy\u1ec3n tr\u1ea1ng th\u00e1i kh\u00f4ng n\u00ean x\u1ea3y ra m\u1ed9t c\u00e1ch v\u00f4 \u0111i\u1ec1u ki\u1ec7n tr\u1eeb khi h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u01b0 v\u1eady. C\u00e1c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 l\u00e0 c\u00e1c bi\u1ec3u th\u1ee9c logic ph\u1ea3i \u0111\u00fang \u0111\u1ec3 chuy\u1ec3n tr\u1ea1ng th\u00e1i x\u1ea3y ra. Vi\u1ec7c b\u1ecf qua ch\u00fang bu\u1ed9c h\u1ec7 th\u1ed1ng ph\u1ea3i ph\u1ea3n \u1ee9ng v\u1edbi c\u00e1c s\u1ef1 ki\u1ec7n m\u00e0 n\u00f3 ch\u01b0a s\u1eb5n s\u00e0ng x\u1eed l\u00fd.<\/p>\n<h3>V\u1ea5n \u0111\u1ec1<\/h3>\n<p>H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u0103ng nh\u1eadp. N\u1ebfu chuy\u1ec3n tr\u1ea1ng th\u00e1i t\u1eeb &#8220;<em>M\u1eadt kh\u1ea9u kh\u00f4ng h\u1ee3p l\u1ec7<\/em>&#8221; sang &#8220;<em>B\u1ecb kh\u00f3a<\/em>&#8221; x\u1ea3y ra m\u00e0 kh\u00f4ng c\u00f3 \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 (v\u00ed d\u1ee5: &#8220;<em>S\u1ed1 l\u1ea7n th\u1eed &gt;= 3<\/em>&#8220;), ng\u01b0\u1eddi d\u00f9ng s\u1ebd b\u1ecb kh\u00f3a ch\u1ec9 sau m\u1ed9t l\u1ea7n sai l\u1ea7m. S\u01a1 \u0111\u1ed3 thi\u1ebfu c\u00e1c r\u00e0ng bu\u1ed9c c\u1ea7n thi\u1ebft \u0111\u1ec3 th\u1ef1c thi c\u00e1c quy t\u1eafc nghi\u1ec7p v\u1ee5.<\/p>\n<h3>Gi\u1ea3i ph\u00e1p<\/h3>\n<ul>\n<li>\n<p>Th\u00eam c\u00e1c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 trong d\u1ea5u ngo\u1eb7c vu\u00f4ng &#8220;<code>[\u0111i\u1ec1u ki\u1ec7n]\"<\/code>&#8221; tr\u00ean c\u00e1c m\u0169i t\u00ean chuy\u1ec3n tr\u1ea1ng th\u00e1i.<\/p>\n<\/li>\n<li>\n<p>\u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 \u0111\u1ec1u c\u00f3 th\u1ec3 ki\u1ec3m th\u1eed v\u00e0 x\u00e1c minh \u0111\u01b0\u1ee3c.<\/p>\n<\/li>\n<li>\n<p>Xem x\u00e9t l\u1ea1i c\u00e1c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u00fang bao ph\u1ee7 c\u00e1c tr\u01b0\u1eddng h\u1ee3p bi\u00ean (v\u00ed d\u1ee5: s\u1ed1 \u00e2m, gi\u00e1 tr\u1ecb null).<\/p>\n<\/li>\n<\/ul>\n<h2>L\u1ed7i 6: S\u1eed d\u1ee5ng ph\u00e2n c\u1ea5p kh\u00f4ng \u0111\u00fang \ud83c\udfd7\ufe0f<\/h2>\n<p>C\u00e1c m\u00e1y tr\u1ea1ng th\u00e1i n\u00e2ng cao s\u1eed d\u1ee5ng ph\u00e2n c\u1ea5p \u0111\u1ec3 qu\u1ea3n l\u00fd \u0111\u1ed9 ph\u1ee9c t\u1ea1p. Tuy nhi\u00ean, ng\u01b0\u1eddi m\u1edbi th\u01b0\u1eddng s\u1eed d\u1ee5ng t\u00ednh n\u0103ng n\u00e0y kh\u00f4ng \u0111\u00fang c\u00e1ch. H\u1ecd c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c tr\u1ea1ng th\u00e1i kh\u00f4ng th\u1ef1c s\u1ef1 c\u00f3 t\u00ednh ph\u00e2n c\u1ea5p, d\u1eabn \u0111\u1ebfn s\u1ef1 d\u01b0 th\u1eeba. Ho\u1eb7c h\u1ecd c\u00f3 th\u1ec3 t\u1ea1o ra s\u1ef1 l\u1ed3ng gh\u00e9p qu\u00e1 s\u00e2u khi\u1ebfn s\u01a1 \u0111\u1ed3 tr\u1edf n\u00ean kh\u00f4ng th\u1ec3 theo d\u00f5i \u0111\u01b0\u1ee3c.<\/p>\n<h3>V\u1ea5n \u0111\u1ec1<\/h3>\n<p>Vi\u1ec7c s\u1eed d\u1ee5ng l\u1ed3ng gh\u00e9p s\u00e2u c\u00f3 th\u1ec3 che gi\u1ea5u c\u00e1c chuy\u1ec3n tr\u1ea1ng th\u00e1i quan tr\u1ecdng. N\u1ebfu m\u1ed9t tr\u1ea1ng th\u00e1i \u0111\u01b0\u1ee3c l\u1ed3ng gh\u00e9p ba c\u1ea5p \u0111\u1ed9, m\u1ed9t chuy\u1ec3n tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t t\u1eeb m\u1ed9t tr\u1ea1ng th\u00e1i cha m\u00e0 b\u1ea1n kh\u00f4ng l\u01b0\u1eddng tr\u01b0\u1edbc. \u0110i\u1ec1u n\u00e0y khi\u1ebfn vi\u1ec7c g\u1ee1 l\u1ed7i tr\u1edf n\u00ean c\u1ef1c k\u1ef3 kh\u00f3 kh\u0103n v\u00ec l\u1ecbch s\u1eed tr\u1ea1ng th\u00e1i kh\u00f4ng hi\u1ec3n th\u1ecb ngay l\u1eadp t\u1ee9c.<\/p>\n<h3>Gi\u1ea3i ph\u00e1p<\/h3>\n<ul>\n<li>\n<p>Gi\u1eef c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p n\u00f4ng (t\u1ed1i \u0111a hai ho\u1eb7c ba c\u1ea5p).<\/p>\n<\/li>\n<li>\n<p>Ch\u1ec9 s\u1eed d\u1ee5ng ph\u00e2n c\u1ea5p \u0111\u1ec3 chia s\u1ebb h\u00e0nh vi chung (v\u00ed d\u1ee5: t\u1ea5t c\u1ea3 <em>Thanh to\u00e1n<\/em> ph\u01b0\u01a1ng th\u1ee9c chia s\u1ebb m\u1ed9t <em>X\u00e1c th\u1ef1c<\/em> tr\u1ea1ng th\u00e1i con).<\/p>\n<\/li>\n<li>\n<p>Ghi r\u00f5 ph\u1ea1m vi c\u1ee7a c\u00e1c chuy\u1ec3n tr\u1ea1ng th\u00e1i: ch\u00fang c\u00f3 \u00e1p d\u1ee5ng cho tr\u1ea1ng th\u00e1i cha hay tr\u1ea1ng th\u00e1i con c\u1ee5 th\u1ec3 kh\u00f4ng?<\/p>\n<\/li>\n<\/ul>\n<h2>L\u1ed7i 7: Nh\u1ea7m l\u1eabn v\u1ec1 chuy\u1ec3n tr\u1ea1ng th\u00e1i t\u1ef1 th\u00e2n \ud83d\udd04<\/h2>\n<p>Chuy\u1ec3n tr\u1ea1ng th\u00e1i t\u1ef1 th\u00e2n x\u1ea3y ra khi m\u1ed9t s\u1ef1 ki\u1ec7n k\u00edch ho\u1ea1t m\u1ed9t chuy\u1ec3n tr\u1ea1ng th\u00e1i \u0111\u01b0a h\u1ec7 th\u1ed1ng tr\u1edf l\u1ea1i c\u00f9ng tr\u1ea1ng th\u00e1i \u0111\u00f3. Ng\u01b0\u1eddi m\u1edbi th\u01b0\u1eddng nh\u1ea7m l\u1eabn \u0111i\u1ec1u n\u00e0y v\u1edbi v\u00f2ng l\u1eb7p ho\u1eb7c tr\u1ea1ng th\u00e1i ch\u1ebft. M\u1eb7c d\u00f9 chuy\u1ec3n tr\u1ea1ng th\u00e1i t\u1ef1 th\u00e2n l\u00e0 h\u1ee3p l\u1ec7 (v\u00ed d\u1ee5: \u0111\u1ec3 ghi nh\u1eadt k\u00fd ho\u1eb7c x\u00e1c th\u1ef1c), ch\u00fang ph\u1ea3i \u0111\u01b0\u1ee3c x\u1eed l\u00fd c\u1ea9n th\u1eadn.<\/p>\n<h3>V\u1ea5n \u0111\u1ec1<\/h3>\n<p>N\u1ebfu m\u1ed9t s\u1ef1 ki\u1ec7n k\u00edch ho\u1ea1t chuy\u1ec3n tr\u1ea1ng th\u00e1i t\u1ef1 th\u00e2n nh\u01b0ng bao g\u1ed3m m\u1ed9t h\u00e0nh \u0111\u1ed9ng l\u00e0m thay \u0111\u1ed5i d\u1eef li\u1ec7u n\u1ed9i b\u1ed9 c\u1ee7a tr\u1ea1ng th\u00e1i, h\u1ec7 th\u1ed1ng ph\u1ea3i \u0111\u1ea3m b\u1ea3o kh\u00f4ng \u0111i v\u00e0o v\u00f2ng l\u1eb7p v\u00f4 h\u1ea1n. V\u00ed d\u1ee5, n\u1ebfu m\u1ed9t tr\u1ea1ng th\u00e1i <em>\u0110\u1ebfm<\/em> t\u0103ng b\u1ed9 \u0111\u1ebfm \u1edf m\u1ed7i nh\u1ecbp m\u00e0 kh\u00f4ng c\u00f3 gi\u1edbi h\u1ea1n, h\u1ec7 th\u1ed1ng s\u1ebd b\u1ecb treo.<\/p>\n<h3>Gi\u1ea3i ph\u00e1p<\/h3>\n<ul>\n<li>\n<p>\u0110\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c chuy\u1ec3n tr\u1ea1ng th\u00e1i t\u1ef1 th\u00e2n c\u00f3 \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 cu\u1ed1i c\u00f9ng s\u1ebd tr\u1edf th\u00e0nh sai.<\/p>\n<\/li>\n<li>\n<p>Ghi nh\u00e3n r\u00f5 r\u00e0ng c\u00e1c chuy\u1ec3n tr\u1ea1ng th\u00e1i t\u1ef1 th\u00e2n v\u1edbi s\u1ef1 ki\u1ec7n c\u1ee5 th\u1ec3 g\u00e2y ra ch\u00fang.<\/p>\n<\/li>\n<li>\n<p>X\u00e1c minh r\u1eb1ng c\u00e1c h\u00e0nh \u0111\u1ed9ng trong chuy\u1ec3n tr\u1ea1ng th\u00e1i t\u1ef1 th\u00e2n kh\u00f4ng l\u00e0m ch\u1eb7n c\u00e1c quy tr\u00ecnh ti\u1ebfp theo.<\/p>\n<\/li>\n<\/ul>\n<h2>Ph\u00e2n t\u00edch so s\u00e1nh: L\u1ed7i so v\u1edbi Gi\u1ea3i ph\u00e1p \ud83d\udccb<\/h2>\n<p>\u0110\u1ec3 t\u1ed5ng h\u1ee3p th\u00f4ng tin, b\u1ea3ng sau \u0111\u00e2y t\u00f3m t\u1eaft c\u00e1c l\u1ed7i ch\u00ednh v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p t\u01b0\u01a1ng \u1ee9ng.<\/p>\n<table style=\"min-width: 75px;\">\n<colgroup>\n<col style=\"min-width: 25px;\"\/>\n<col style=\"min-width: 25px;\"\/>\n<col style=\"min-width: 25px;\"\/><\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>L\u1ed7i<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>T\u00e1c \u0111\u1ed9ng<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>Gi\u1ea3i ph\u00e1p<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>Thi\u1ebfu tr\u1ea1ng th\u00e1i kh\u1edfi \u0111\u1ea7u<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>Kh\u1edfi \u0111\u1ed9ng h\u1ec7 th\u1ed1ng kh\u00f4ng x\u00e1c \u0111\u1ecbnh<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u0110\u00e1nh d\u1ea5u n\u00fat b\u1eaft \u0111\u1ea7u r\u00f5 r\u00e0ng<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>Chuy\u1ec3n tr\u1ea1ng th\u00e1i kh\u00f4ng x\u00e1c \u0111\u1ecbnh<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>S\u1ef1 ki\u1ec7n kh\u00f4ng \u0111\u01b0\u1ee3c x\u1eed l\u00fd<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>L\u1eadp b\u1ea3n \u0111\u1ed3 t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ea7u v\u00e0o s\u1ef1 ki\u1ec7n<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>S\u1ef1 ki\u1ec7n kh\u00f4ng r\u00f5 r\u00e0ng<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p> xung \u0111\u1ed9t logic<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>S\u1eed d\u1ee5ng t\u00ean duy nh\u1ea5t<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>Tr\u1ea1ng th\u00e1i qu\u00e1 ph\u1ee9c t\u1ea1p<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>T\u1ea3i nh\u1eadn th\u1ee9c cao<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>Ph\u00e2n r\u00e3 th\u00e0nh c\u00e1c tr\u1ea1ng th\u00e1i con<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>Thi\u1ebfu \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>Thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i kh\u00f4ng h\u1ee3p l\u1ec7<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>Th\u00eam c\u00e1c ki\u1ec3m tra boolean<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>Ph\u00e2n c\u1ea5p s\u00e2u<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>Kh\u00f3 g\u1ee1 l\u1ed7i<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>Gi\u1edbi h\u1ea1n m\u1ee9c \u0111\u1ed9 l\u1ed3ng nhau<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Xem x\u00e9t n\u00e2ng cao: T\u00ednh \u0111\u1ed3ng th\u1eddi \u26a1<\/h2>\n<p>M\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng y\u00eau c\u1ea7u nhi\u1ec1u m\u00e1y tr\u1ea1ng th\u00e1i ch\u1ea1y \u0111\u1ed3ng th\u1eddi. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 t\u00ednh \u0111\u1ed3ng th\u1eddi ho\u1eb7c c\u00e1c v\u00f9ng tr\u1ef1c giao. Ng\u01b0\u1eddi m\u1edbi th\u01b0\u1eddng c\u1ed1 g\u1eafng \u00e9p bu\u1ed9c h\u00e0nh vi \u0111\u1ed3ng th\u1eddi v\u00e0o m\u1ed9t s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i ph\u1eb3ng duy nh\u1ea5t, d\u1eabn \u0111\u1ebfn m\u1ed9t m\u1ea1ng l\u01b0\u1edbi c\u00e1c \u0111\u01b0\u1eddng d\u00e2y r\u1ed1i r\u1eafm.<\/p>\n<h3>V\u1ea5n \u0111\u1ec1<\/h3>\n<p>C\u1ed1 g\u1eafng m\u00f4 h\u00ecnh h\u00f3a m\u1ed9t h\u1ec7 th\u1ed1ng c\u00f3 c\u1ea3 <em>Qu\u1ea3n l\u00fd ngu\u1ed3n \u0111i\u1ec7n<\/em> v\u00e0 <em>K\u1ebft n\u1ed1i m\u1ea1ng<\/em> trong m\u1ed9t lu\u1ed3ng tuy\u1ebfn t\u00ednh duy nh\u1ea5t t\u1ea1o ra s\u1ef1 ph\u1ee9c t\u1ea1p kh\u00f4ng c\u1ea7n thi\u1ebft. Tr\u1ea1ng th\u00e1i c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n kh\u00f4ng nh\u1ea5t thi\u1ebft quy\u1ebft \u0111\u1ecbnh tr\u1ea1ng th\u00e1i c\u1ee7a m\u1ea1ng.<\/p>\n<h3>Gi\u1ea3i ph\u00e1p<\/h3>\n<ul>\n<li>\n<p>S\u1eed d\u1ee5ng c\u00e1c v\u00f9ng tr\u1ef1c giao \u0111\u1ec3 bi\u1ec3u di\u1ec5n c\u00e1c m\u00e1y tr\u1ea1ng th\u00e1i \u0111\u1ed9c l\u1eadp trong c\u00f9ng m\u1ed9t ng\u1eef c\u1ea3nh.<\/p>\n<\/li>\n<li>\n<p>V\u1ebd c\u00e1c v\u00f9ng n\u00e0y c\u1ea1nh nhau ho\u1eb7c x\u1ebfp ch\u1ed3ng l\u00ean nhau \u0111\u1ec3 ch\u1ec9 ra vi\u1ec7c th\u1ef1c thi song song.<\/p>\n<\/li>\n<li>\n<p>\u0110\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c chuy\u1ec3n \u0111\u1ed5i trong m\u1ed9t v\u00f9ng kh\u00f4ng v\u00f4 t\u00ecnh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn v\u00f9ng kia tr\u1eeb khi \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a r\u00f5 r\u00e0ng.<\/p>\n<\/li>\n<\/ul>\n<h2>T\u00e0i li\u1ec7u v\u00e0 quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean \ud83d\udcdd<\/h2>\n<p>S\u01a1 \u0111\u1ed3 tr\u1ef1c quan s\u1ebd v\u00f4 d\u1ee5ng n\u1ebfu v\u0103n b\u1ea3n \u0111i k\u00e8m kh\u00f4ng r\u00f5 r\u00e0ng. Quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean kh\u00f4ng ch\u1ec9 l\u00e0 v\u1ec1 th\u1ea9m m\u1ef9; ch\u00fang l\u00e0 v\u1ec1 s\u1ef1 giao ti\u1ebfp gi\u1eefa c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n, c\u00e1c b\u00ean li\u00ean quan v\u00e0 ng\u01b0\u1eddi ki\u1ec3m th\u1eed.<\/p>\n<ul>\n<li>\n<p><strong>T\u00ean tr\u1ea1ng th\u00e1i:<\/strong> S\u1eed d\u1ee5ng danh t\u1eeb ho\u1eb7c c\u1ee5m danh t\u1eeb (v\u00ed d\u1ee5: <em>\u0110\u01a1n h\u00e0ng \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn<\/em> thay v\u00ec <em>\u0110ang x\u00e1c nh\u1eadn<\/em>).<\/p>\n<\/li>\n<li>\n<p><strong>T\u00ean s\u1ef1 ki\u1ec7n:<\/strong> S\u1eed d\u1ee5ng \u0111\u1ed9ng t\u1eeb ho\u1eb7c c\u1ee5m \u0111\u1ed9ng t\u1eeb (v\u00ed d\u1ee5: &#8220;<em>\u0110\u00e3 \u0111\u1eb7t h\u00e0ng<\/em>).<\/p>\n<\/li>\n<li>\n<p><strong>T\u00ean h\u00e0nh \u0111\u1ed9ng:<\/strong> M\u00f4 t\u1ea3 t\u00e1c \u0111\u1ed9ng (v\u00ed d\u1ee5: &#8220;<em>G\u1eedi email<\/em>).<\/p>\n<\/li>\n<\/ul>\n<p>T\u00ednh nh\u1ea5t qu\u00e1n trong \u0111\u1eb7t t\u00ean cho ph\u00e9p t\u1ea1o m\u00e3 t\u1ef1 \u0111\u1ed9ng v\u00e0 b\u1ea3o tr\u00ec d\u1ec5 d\u00e0ng h\u01a1n. N\u1ebfu s\u01a1 \u0111\u1ed3 ghi &#8221; <em>B\u1eaft \u0111\u1ea7u<\/em> nh\u01b0ng m\u00e3 ngu\u1ed3n ghi &#8221; <em>Kh\u1edfi t\u1ea1o<\/em>, m\u1ed1i li\u00ean k\u1ebft gi\u1eefa thi\u1ebft k\u1ebf v\u00e0 tri\u1ec3n khai s\u1ebd b\u1ecb ph\u00e1 v\u1ee1.<\/p>\n<h2>Ki\u1ec3m tra s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i c\u1ee7a b\u1ea1n \ud83e\uddea<\/h2>\n<p>Sau khi s\u01a1 \u0111\u1ed3 \u0111\u01b0\u1ee3c v\u1ebd, n\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c. Quy tr\u00ecnh n\u00e0y th\u01b0\u1eddng b\u1ecb b\u1ecf qua nh\u01b0ng l\u1ea1i r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n<h3>C\u00e1c b\u01b0\u1edbc x\u00e1c th\u1ef1c<\/h3>\n<ul>\n<li>\n<p><strong>Ki\u1ec3m tra t\u1eebng b\u01b0\u1edbc:<\/strong> Theo d\u00f5i m\u1ecdi \u0111\u01b0\u1eddng \u0111i c\u00f3 th\u1ec3 t\u1eeb \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u \u0111\u1ebfn k\u1ebft th\u00fac.<\/p>\n<\/li>\n<li>\n<p><strong>Ph\u00e2n t\u00edch tr\u01b0\u1eddng h\u1ee3p bi\u00ean:<\/strong> \u0110i\u1ec1u g\u00ec s\u1ebd x\u1ea3y ra n\u1ebfu m\u1ed9t s\u1ef1 ki\u1ec7n x\u1ea3y ra kh\u00f4ng theo th\u1ee9 t\u1ef1?<\/p>\n<\/li>\n<li>\n<p><strong>Ki\u1ec3m tra m\u00e3 ngu\u1ed3n:<\/strong> Vi\u1ec7c tri\u1ec3n khai c\u00f3 kh\u1edbp ch\u00ednh x\u00e1c v\u1edbi s\u01a1 \u0111\u1ed3 kh\u00f4ng?<\/p>\n<\/li>\n<li>\n<p><strong>Ki\u1ec3m tra \u0111\u1ed3ng nghi\u1ec7p:<\/strong> H\u00e3y \u0111\u1ec3 m\u1ed9t \u0111\u1ed3ng nghi\u1ec7p xem l\u1ea1i s\u01a1 \u0111\u1ed3 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh r\u00f5 r\u00e0ng.<\/p>\n<\/li>\n<\/ul>\n<h2>Nh\u1eefng l\u1ed7i th\u01b0\u1eddng g\u1eb7p trong tri\u1ec3n khai \ud83d\udee0\ufe0f<\/h2>\n<p>Ngay c\u1ea3 khi c\u00f3 m\u1ed9t s\u01a1 \u0111\u1ed3 ho\u00e0n h\u1ea3o, c\u00e1c l\u1ed7i tri\u1ec3n khai v\u1eabn x\u1ea3y ra. Logic m\u00e1y tr\u1ea1ng th\u00e1i trong m\u00e3 ngu\u1ed3n th\u01b0\u1eddng b\u1ecb l\u1ec7ch kh\u1ecfi thi\u1ebft k\u1ebf.<\/p>\n<ul>\n<li>\n<p><strong>Tr\u1ea1ng th\u00e1i c\u1ee9ng (Hardcoded):<\/strong> Tr\u00e1nh s\u1eed d\u1ee5ng c\u00e1c s\u1ed1 ma thu\u1eadt cho tr\u1ea1ng th\u00e1i. H\u00e3y s\u1eed d\u1ee5ng c\u00e1c ki\u1ec3u li\u1ec7t k\u00ea.<\/p>\n<\/li>\n<li>\n<p><strong>S\u1ef1 ki\u1ec7n n\u1ed5i (Event Bubbling):<\/strong> \u0110\u1ea3m b\u1ea3o c\u00e1c s\u1ef1 ki\u1ec7n \u0111\u01b0\u1ee3c x\u1eed l\u00fd \u1edf \u0111\u00fang c\u1ea5p \u0111\u1ed9 ph\u00e2n c\u1ea5p.<\/p>\n<\/li>\n<li>\n<p><strong>S\u1ef1 t\u1ed3n l\u01b0u tr\u1ea1ng th\u00e1i:<\/strong> N\u1ebfu h\u1ec7 th\u1ed1ng kh\u1edfi \u0111\u1ed9ng l\u1ea1i, n\u00f3 c\u00f3 nh\u1edb l\u1ea1i tr\u1ea1ng th\u00e1i c\u1ee7a m\u00ecnh kh\u00f4ng? H\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng s\u01a1 \u0111\u1ed3 \u0111\u00e3 t\u00ednh \u0111\u1ebfn c\u00e1c c\u01a1 ch\u1ebf t\u1ed3n l\u01b0u.<\/p>\n<\/li>\n<\/ul>\n<h2>Nh\u1eefng suy ngh\u0129 cu\u1ed1i c\u00f9ng v\u1ec1 thi\u1ebft k\u1ebf tr\u1ea1ng th\u00e1i \ud83d\udca1<\/h2>\n<p>Vi\u1ec7c t\u1ea1o s\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i l\u00e0 m\u1ed9t b\u00e0i t\u1eadp v\u1ec1 s\u1ef1 ch\u00ednh x\u00e1c. N\u00f3 \u0111\u00f2i h\u1ecfi ph\u1ea3i suy ngh\u0129 k\u1ef9 l\u01b0\u1ee1ng v\u1ec1 m\u1ecdi kh\u1ea3 n\u0103ng v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng logic ho\u1ea1t \u0111\u1ed9ng t\u1ed1t ngay c\u1ea3 trong \u0111i\u1ec1u ki\u1ec7n c\u0103ng th\u1eb3ng. B\u1eb1ng c\u00e1ch tr\u00e1nh nh\u1eefng l\u1ed7i ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c n\u00eau \u1edf tr\u00ean, b\u1ea1n \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c m\u00f4 h\u00ecnh c\u1ee7a m\u00ecnh kh\u00f4ng ch\u1ec9 l\u00e0 c\u00e1c b\u00e0i t\u1eadp l\u00fd thuy\u1ebft m\u00e0 c\u00f2n l\u00e0 c\u00f4ng c\u1ee5 th\u1ef1c ti\u1ec5n \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u00e1ng tin c\u1eady.<\/p>\n<p>H\u00e3y nh\u1edb r\u1eb1ng s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i l\u00e0 nh\u1eefng t\u00e0i li\u1ec7u s\u1ed1ng. Khi y\u00eau c\u1ea7u thay \u0111\u1ed5i, s\u01a1 \u0111\u1ed3 c\u0169ng ph\u1ea3i thay \u0111\u1ed5i theo. C\u00e1c cu\u1ed9c r\u00e0 so\u00e1t v\u00e0 c\u1eadp nh\u1eadt \u0111\u1ecbnh k\u1ef3 gi\u00fap m\u00f4 h\u00ecnh lu\u00f4n ph\u00f9 h\u1ee3p. H\u00e3y t\u1eadp trung v\u00e0o s\u1ef1 r\u00f5 r\u00e0ng, t\u00ednh nh\u1ea5t qu\u00e1n v\u00e0 t\u00ednh \u0111\u1ea7y \u0111\u1ee7. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y d\u1eabn \u0111\u1ebfn c\u00e1c h\u1ec7 th\u1ed1ng d\u1ec5 g\u1ee1 l\u1ed7i, b\u1ea3o tr\u00ec v\u00e0 m\u1edf r\u1ed9ng h\u01a1n.<\/p>\n<p>H\u00e3y b\u1eaft \u0111\u1ea7u v\u1edbi m\u1ed9t m\u00f4 h\u00ecnh \u0111\u01a1n gi\u1ea3n v\u00e0 ch\u1ec9 th\u00eam \u0111\u1ed9 ph\u1ee9c t\u1ea1p khi c\u1ea7n thi\u1ebft. H\u00e3y c\u01b0\u1ee1ng l\u1ea1i s\u1ef1 th\u00f4i th\u00fac thi\u1ebft k\u1ebf ban \u0111\u1ea7u qu\u00e1 m\u1ee9c. M\u1ed9t n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc t\u1ed1t h\u01a1n m\u1ed9t c\u1ea5u tr\u00fac ph\u1ee9c t\u1ea1p nh\u01b0ng mong manh. V\u1edbi c\u00e1c h\u01b0\u1edbng d\u1eabn n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 t\u1ef1 tin v\u01b0\u1ee3t qua nh\u1eefng ph\u1ee9c t\u1ea1p trong thi\u1ebft k\u1ebf m\u00e1y tr\u1ea1ng th\u00e1i.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vi\u1ec7c thi\u1ebft k\u1ebf bi\u1ec3u \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i l\u00e0 m\u1ed9t k\u1ef9 n\u0103ng c\u01a1 b\u1ea3n \u0111\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 ai tham gia v\u00e0o ki\u1ebfn tr\u00fac ph\u1ea7n m\u1ec1m, logic ph\u1ea7n c\u1ee9ng ho\u1eb7c&hellip;<\/p>\n","protected":false},"author":1,"featured_media":1134,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"Nh\u1eefng l\u1ed7i ph\u1ed5 bi\u1ebfn trong s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i v\u00e0 c\u00e1ch s\u1eeda \ud83d\udee0\ufe0f","_yoast_wpseo_metadesc":"H\u1ecdc c\u00e1ch tr\u00e1nh c\u00e1c l\u1ed7i ph\u1ed5 bi\u1ebfn trong s\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i. S\u1eeda c\u00e1c chuy\u1ec3n \u0111\u1ed5i ch\u01b0a x\u00e1c \u0111\u1ecbnh, thi\u1ebfu tr\u1ea1ng th\u00e1i v\u00e0 v\u00f2ng l\u1eb7p logic \u0111\u1ec3 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng v\u1eefng ch\u1eafc.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[35],"tags":[40,41],"class_list":["post-1133","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uml","tag-academic","tag-state-machine-diagram"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nh\u1eefng l\u1ed7i ph\u1ed5 bi\u1ebfn trong s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i v\u00e0 c\u00e1ch s\u1eeda \ud83d\udee0\ufe0f<\/title>\n<meta name=\"description\" content=\"H\u1ecdc c\u00e1ch tr\u00e1nh c\u00e1c l\u1ed7i ph\u1ed5 bi\u1ebfn trong s\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i. 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