{"id":2932,"date":"2021-03-16T17:45:01","date_gmt":"2021-03-16T10:45:01","guid":{"rendered":"https:\/\/webvocuc.com\/blog\/?p=2932"},"modified":"2021-12-13T22:36:27","modified_gmt":"2021-12-13T15:36:27","slug":"javascript-la-gi-tai-sao-thiet-ke-website","status":"publish","type":"post","link":"https:\/\/webvocuc.com\/blog\/javascript-la-gi-tai-sao-thiet-ke-website.html","title":{"rendered":"JavaScript l\u00e0 g\u00ec? T\u1ea1i sao thi\u1ebft k\u1ebf website c\u1ea7n JavaScript"},"content":{"rendered":"<p><strong><a href=\"https:\/\/webvocuc.com\/blog\/?p=2932&amp;preview=true\" target=\"_blank\" rel=\"noopener\">JavaScript l\u00e0 g\u00ec<\/a><\/strong>? T\u1ea1i sao thi\u1ebft k\u1ebf website c\u1ea7n JavaScript. N\u00f3 c\u00f3 t\u00e1c d\u1ee5ng gi\u00fap chuy\u1ec3n\u00a0<b>website<\/b> t\u1eeb tr\u1ea1ng th\u00e1i t\u0129nh sang tr\u1ea1ng th\u00e1i \u0111\u1ed9ng t\u1ea1o ra c\u00e1c t\u01b0\u01a1ng t\u00e1c \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t m\u00e1y ch\u1ee7 v\u00e0 n\u00e2ng cao tr\u1ea3i nghi\u1ec7m c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<h2 id=\"ftoc-heading-1\" class=\"ftwp-heading md-end-block md-heading\"><strong>JavaScript l\u00e0 g\u00ec?<\/strong><\/h2>\n<p>JavaScript l\u00e0 ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh \u0111\u01b0\u1ee3c Brendan Eich cho ra m\u1eaft v\u00e0o 1995.\u00a0C\u00f3 nhi\u1ec1u ng\u01b0\u1eddi th\u01b0\u1eddng nh\u1ea7m t\u01b0\u1edfng r\u1eb1ng JavaScript ra \u0111\u1eddi d\u1ef1a tr\u00ean ng\u00f4n ng\u1eef Java. Nh\u01b0ng s\u1ef1 th\u1eadt kh\u00f4ng ph\u1ea3i th\u1ebf, ng\u00f4n ng\u1eef n\u00e0y \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean l\u00e1i theo t\u00ean Java. Nh\u1eb1m m\u1ee5c \u0111\u00edch thu h\u00fat s\u1ef1 ch\u00fa \u00fd c\u1ee7a ng\u01b0\u1eddi d\u00f9ng t\u1edbi ng\u00f4n ng\u1eef m\u1edbi n\u00e0y nh\u01b0 l\u00e0 s\u1ee9c h\u00fat c\u1ee7a Java l\u00fac b\u1ea5y gi\u1edd.<\/p>\n<p>Tuy nhi\u00ean, t\u00ednh t\u1edbi th\u1eddi \u0111i\u1ec3m hi\u1ec7n t\u1ea1i th\u00ec JavaScript kh\u00f4ng ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng m\u1ed7i m\u1ea3ng tr\u00ecnh duy\u1ec7t trong m\u00f4i tr\u01b0\u1eddng nh\u00fang (client \u2013 side). M\u00e0 n\u00f3 c\u00f2n \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn l\u00e0 ng\u00f4n ng\u1eef \u0111a n\u1ec1n t\u1ea3ng, ch\u1ea1y \u0111\u01b0\u1ee3c \u1edf nhi\u1ec1u m\u00f4i tr\u01b0\u1eddng m\u00e1y ch\u1ee7, ph\u1ea7n m\u1ec1m m\u00e1y kh\u00e1c.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/blog.webico.vn\/wp-content\/uploads\/2019\/12\/javascript-3.png\" alt=\"JavaScript l\u00e0 g\u00ec? \" width=\"1563\" height=\"879\" title=\"\"><\/p>\n<h2 id=\"ftoc-heading-2\" class=\"ftwp-heading\"><b>C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a JavaScript<\/b><\/h2>\n<p>Th\u00f4ng th\u01b0\u1eddng, c\u00e1c l\u1eadp tr\u00ecnh vi\u00ean th\u01b0\u1eddng s\u1ebd t\u1ea1o c\u00e1c t\u1ec7p tin r\u1ed3i ch\u00e8n th\u1eb3ng ch\u00fang v\u00e0o file HTML.<\/p>\n<p>Khi b\u1ea1n truy c\u1eadp v\u00e0o, tr\u00ecnh duy\u1ec7t s\u1ebd t\u1ef1 \u0111\u1ed9ng t\u00ecm ki\u1ebfm t\u1eadp tin <a href=\"https:\/\/vi.wikipedia.org\/wiki\/JavaScript\" target=\"_blank\" rel=\"noopener nofollow\">JavaScript<\/a> \u0111\u01b0\u1ee3c g\u1ecdi ho\u1eb7c th\u00f4ng qua \u0111o\u1ea1n m\u00e3 nh\u00fang th\u1eb3ng trong <strong>HTML \u0111\u00f3 c\u1ee7a website<\/strong>. C\u00e1c d\u00f2ng m\u00e3 \u0111\u00f3 s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c thi ngay tr\u00ean tr\u00ecnh duy\u1ec7t c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, \u0111\u00f3 c\u0169ng l\u00e0 l\u00fd do m\u00e0 ng\u00f4n ng\u1eef n\u00e0y c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ng\u00f4n ng\u1eef ch\u1ea1y tr\u00ean m\u00e1y ng\u01b0\u1eddi d\u00f9ng thay v\u00ec ch\u1ea1y tr\u00ean m\u00e1y ch\u1ee7.<\/p>\n<h2 class=\"md-end-block md-heading\"><span class=\"md-plain\"><strong>\u01afu \u0111i\u1ec3m c\u1ee7a vi\u1ec7c thi\u1ebft k\u1ebf website b\u1eb1ng JavaScript<\/strong><\/span><\/h2>\n<h3 id=\"ftoc-heading-4\" class=\"ftwp-heading md-end-block md-heading\"><strong>\u0110\u1ed1i v\u1edbi ch\u1ee7 website\/ng\u01b0\u1eddi thi\u1ebft k\u1ebf website<\/strong><\/h3>\n<ul>\n<li>Ti\u1ebft ki\u1ec7m b\u0103ng th\u00f4ng m\u00e1y ch\u1ee7 do JavaScript ch\u1ea1y tr\u00ean m\u00e1y c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/li>\n<\/ul>\n<p>JS s\u1eed d\u1ee5ng trong <a href=\"https:\/\/webvocuc.com\/thiet-ke-website-chuyen-nghiep\" target=\"_blank\" rel=\"noopener\">thi\u1ebft k\u1ebf website<\/a> c\u00f3 th\u1ec3 gi\u00fap ti\u1ebft ki\u1ec7m b\u0103ng th\u00f4ng m\u00e1y ch\u1ee7 v\u00f4 c\u00f9ng t\u1ed1t b\u1edfi ch\u00fang \u0111\u01b0\u1ee3c ch\u1ea1y tr\u1ef1c ti\u1ebfp tr\u00ean m\u00e1y c\u1ee7a ng\u01b0\u1eddi d\u00f9ng \u0111\u00f3. \u0110\u00e2y c\u0169ng l\u00e0 m\u1ee5c \u0111\u00edch ban \u0111\u1ea7u c\u1ee7a nh\u00e0 khoa h\u1ecdc Brendan Eich khi t\u1ea1o ra ch\u01b0\u01a1ng tr\u00ecnh JavaScript n\u00e0y. \u0110\u1eb7c bi\u1ec7t l\u00e0 trong b\u1ed1i c\u1ea3nh tr\u01b0\u1edbc \u0111\u00e2y, nh\u1eefng chi\u1ebfc m\u00e1y ch\u1ee7 kh\u1ed5ng l\u1ed3 v\u00e0 chi\u1ebfm di\u1ec7n t\u00edch v\u00f4 c\u00f9ng l\u1edbn, g\u00e2y t\u1ed1n r\u1ea5t nhi\u1ec1u chi ph\u00ed cho c\u00e1c doanh nghi\u1ec7p.<\/p>\n<p>B\u1edfi v\u1eady, c\u00e1c d\u00f2ng Script sau n\u00e0y \u0111\u1ec1u \u0111\u01b0\u1ee3c th\u1ef1c thi tr\u00ean tr\u00ecnh duy\u1ec7t ng\u01b0\u1eddi d\u00f9ng. Nh\u1eb1m gia t\u0103ng hi\u1ec7u su\u1ea5t, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd m\u00e1y ch\u1ee7 v\u00e0 ti\u1ebft ki\u1ec7m ph\u1ea7n l\u1edbn di\u1ec7n t\u00edch b\u0103ng th\u00f4ng.<\/p>\n<ul>\n<li>Linh ho\u1ea1t v\u1eadn h\u00e0nh, t\u01b0\u01a1ng th\u00edch t\u1ed1t v\u1edbi m\u00e1y ch\u1ee7<\/li>\n<\/ul>\n<p>\u0110\u1ec3 th\u1ef1c thi, tr\u00ecnh duy\u1ec7t web ch\u1ec9 c\u1ea7n t\u1ea3i file JavaScript v\u1ec1 m\u00e1y ch\u1ee7 t\u1eeb m\u1ed9t t\u00ean mi\u1ec1n ri\u00eang bi\u1ec7t ho\u1eb7c nh\u00fang th\u1eb3ng ch\u00fang v\u00e0o file HTML c\u1ee7a website v\u00e0 ch\u1ea1y m\u00e0 kh\u00f4ng c\u1ea7n t\u1ea3i th\u00eam g\u00ec n\u1eefa. B\u1edfi v\u1eady,\u00a0JS c\u00f3 th\u1ec3 ch\u1ea1y \u0111\u01b0\u1ee3c tr\u00ean h\u1ea7u h\u1ebft c\u00e1c tr\u00ecnh duy\u1ec7t ph\u1ed5 bi\u1ebfn hi\u1ec7n nay nh\u01b0 C\u1ed1c C\u1ed1c, Chrome, Firefox, Microsoft, Safari,\u2026<\/p>\n<p>Kh\u00f4ng nh\u1eefng th\u1ebf, h\u1ea7u h\u1ebft c\u00e1c tr\u00ecnh duy\u1ec7t web \u0111\u1ec1u c\u00f3 t\u00edch h\u1ee3p s\u1eb5n tr\u00ecnh th\u00f4ng d\u1ecbch ng\u00f4n ng\u1eef JavaScript, \u0111\u1ea3m b\u1ea3o ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ngay m\u00e0 kh\u00f4ng m\u1ea5y c\u00f4ng t\u1ea3i v\u1ec1 tr\u00ecnh duy\u1ec7t, gi\u1ea3m t\u1ef7 l\u1ec7 th\u1ef1c thi c\u00e1c ch\u1ee9c n\u0103ng c\u1ee7a JavaScript. \u0110i\u1ec1u n\u00e0y v\u00f4 c\u00f9ng ti\u1ec7n l\u1ee3i cho ng\u01b0\u1eddi d\u00f9ng n\u1ebfu kh\u00f4ng c\u00f3 k\u1ebft n\u1ed1i internet.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2934 size-full\" src=\"https:\/\/webvocuc.com\/blog\/wp-content\/uploads\/2021\/03\/ss.jpg\" alt=\"JavaScript l\u00e0 g\u00ec?\" width=\"696\" height=\"458\" title=\"\" srcset=\"https:\/\/webvocuc.com\/blog\/wp-content\/uploads\/2021\/03\/ss.jpg 696w, https:\/\/webvocuc.com\/blog\/wp-content\/uploads\/2021\/03\/ss-300x197.jpg 300w, https:\/\/webvocuc.com\/blog\/wp-content\/uploads\/2021\/03\/ss-525x345.jpg 525w\" sizes=\"auto, (max-width: 696px) 100vw, 696px\" \/><\/p>\n<h2 id=\"ftoc-heading-10\" class=\"ftwp-heading md-end-block md-heading\"><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m vi\u1ec7c thi\u1ebft k\u1ebf website b\u1eb1ng JavaScript<\/strong><\/h2>\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">T\u1ea5t nhi\u00ean b\u1ea5t k\u00ec ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh n\u00e0o c\u0169ng v\u1eady, c\u0169ng \u0111\u1ec1u s\u1ebd c\u00f3 nh\u1eefng khuy\u1ebft \u0111i\u1ec3m \u0111i k\u00e8m.<\/span><\/p>\n<h3 id=\"ftoc-heading-11\" class=\"ftwp-heading md-end-block md-heading\">\u0110\u1ed1i v\u1edbi ch\u1ee7 website\/ng\u01b0\u1eddi thi\u1ebft k\u1ebf:<\/h3>\n<ul>\n<li>C\u00e1c t\u00ednh n\u0103ng JavaScript c\u00f3 th\u1ec3 kh\u00f4ng ch\u1ea1y \u0111\u01b0\u1ee3c<\/li>\n<\/ul>\n<p>M\u1ed9t s\u1ed1 tr\u00ecnh duy\u1ec7t kh\u00f4ng h\u1ed7 tr\u1ee3 ho\u1eb7c t\u1eaft JavaScript. Th\u00ec c\u00e1c t\u00ednh n\u0103ng c\u1ee7a ng\u00f4n ng\u1eef n\u00e0y c\u00f3 th\u1ec3 kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c. Khi \u0111\u00f3, b\u1ea1n c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft theo m\u1ed9t s\u1ed1 c\u00e1ch sau:<\/p>\n<p>&#8211; Thay th\u1ebf JavaScript b\u1eb1ng HTML, CSS cho v\u00e0i th\u00e0nh ph\u1ea7n c\u1ee7a website (n\u1ebfu \u0111\u01b0\u1ee3c).<\/p>\n<p>&#8211; Ki\u1ec3m tra th\u1eed website khi ch\u1ea1y kh\u00f4ng c\u00f3 JavaScript v\u00e0 hi\u1ec7n th\u00f4ng b\u00e1o \u0111\u1ec1 ngh\u1ecb ng\u01b0\u1eddi d\u00f9ng b\u1eadt JavaScript \u0111\u1ec3 c\u00f3 nh\u1eefng tr\u1ea3i nghi\u1ec7m t\u1ed1t h\u01a1n.<\/p>\n<p>&#8211; Th\u00f4ng b\u00e1o cho ng\u01b0\u1eddi d\u00f9ng bi\u1ebft website c\u1ea7n JavaScript \u0111\u1ec3 s\u1eed d\u1ee5ng m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng nh\u1ea5t \u0111\u1ecbnh n\u00e0o \u0111\u00f3.<\/p>\n<ul>\n<li>JavaScript s\u1ebd tri\u1ec3n khai kh\u00e1c nhau t\u00f9y v\u00e0o tr\u00ecnh duy\u1ec7t v\u00e0 thi\u1ebft b\u1ecb ng\u01b0\u1eddi d\u00f9ng.<\/li>\n<\/ul>\n<p>JavaScript tr\u00ean m\u1ed7i tr\u00ecnh duy\u1ec7t l\u00e0 kh\u00f4ng gi\u1ed1ng nhau. \u0110i\u1ec1u n\u00e0y t\u00f9y thu\u1ed9c v\u00e0o c\u00f4ng su\u1ea5t v\u00e0 t\u00f9y ch\u1ec9nh c\u1ee7a m\u1ed7i thi\u1ebft b\u1ecb, tr\u00ecnh duy\u1ec7t tr\u00ean m\u00e1y. Do \u0111\u00f3 \u0111\u00f4i khi b\u1ea1n c\u00f3 th\u1ec3 b\u1eaft g\u1eb7p m\u1ed9t s\u1ed1 l\u1ed7i v\u1ec1 t\u00ednh n\u0103ng ho\u1eb7c hi\u1ec3n th\u1ecb website kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t.<\/p>\n<p>V\u00ec v\u1eady, b\u1ea1n c\u1ea7n ki\u1ec3m tra, ch\u1ea1y th\u1eed <strong>website<\/strong> tr\u00ean nhi\u1ec1u tr\u00ecnh duy\u1ec7t v\u00e0 n\u1ec1n t\u1ea3ng kh\u00e1c nhau. \u0110\u1ec3 t\u1eeb \u0111\u00f3 c\u00f3 th\u1ec3 k\u1ecbp th\u1eddi x\u1eed l\u00fd c\u00e1c v\u1ea5n \u0111\u1ec1 ph\u00e1t sinh.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>JavaScript l\u00e0 g\u00ec? T\u1ea1i sao thi\u1ebft k\u1ebf website c\u1ea7n JavaScript. N\u00f3 c\u00f3 t\u00e1c d\u1ee5ng gi\u00fap chuy\u1ec3n\u00a0website t\u1eeb tr\u1ea1ng th\u00e1i t\u0129nh sang tr\u1ea1ng th\u00e1i \u0111\u1ed9ng t\u1ea1o ra c\u00e1c t\u01b0\u01a1ng t\u00e1c \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t m\u00e1y ch\u1ee7 v\u00e0 n\u00e2ng cao tr\u1ea3i nghi\u1ec7m c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. JavaScript l\u00e0 g\u00ec? JavaScript l\u00e0 ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh \u0111\u01b0\u1ee3c Brendan [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":2934,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[8],"tags":[],"class_list":["post-2932","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thiet-ke-website"],"jetpack_featured_media_url":"https:\/\/webvocuc.com\/blog\/wp-content\/uploads\/2021\/03\/ss.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/posts\/2932","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/comments?post=2932"}],"version-history":[{"count":2,"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/posts\/2932\/revisions"}],"predecessor-version":[{"id":5549,"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/posts\/2932\/revisions\/5549"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/media\/2934"}],"wp:attachment":[{"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/media?parent=2932"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/categories?post=2932"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/tags?post=2932"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}