{"id":3155,"date":"2016-07-05T08:27:01","date_gmt":"2016-07-05T08:27:01","guid":{"rendered":"https:\/\/kiencang.net\/?p=3155"},"modified":"2016-07-05T08:27:01","modified_gmt":"2016-07-05T08:27:01","slug":"chuoi-trong-javascript","status":"publish","type":"post","link":"https:\/\/kiencang.net\/chuoi-trong-javascript\/","title":{"rendered":"Chu\u1ed7i trong JavaScript"},"content":{"rendered":"\n<p>Chu\u1ed7i trong JavaScript d\u00f9ng \u0111\u1ec3 l\u01b0u gi\u1eef v\u00e0 thao t\u00e1c v\u0103n b\u1ea3n.<\/p>\n\n\n\n<p>M\u1ed9t chu\u1ed7i trong JavaScript \u0111\u01a1n gi\u1ea3n d\u00f9ng \u0111\u1ec3 l\u01b0u gi\u1eef d\u00e3y k\u00fd t\u1ef1 nh\u01b0 l\u00e0 &#8220;Nguy\u1ec5n \u0110\u1ee9c Anh&#8221;.<\/p>\n\n\n\n<p>M\u1ed9t chu\u1ed7i l\u00e0 v\u0103n b\u1ea3n b\u1ea5t k\u1ef3 n\u1eb1m trong d\u1ea5u nh\u00e1y, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng d\u1ea5u nh\u00e1y \u0111\u01a1n ho\u1eb7c d\u1ea5u nh\u00e1y k\u00e9p:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ed d\u1ee5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>var carname = \"Volvo XC60\";\nvar carname = 'Volvo XC60';<\/code><\/pre>\n\n\n\n<p>B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng d\u1ea5u nh\u00e1y trong chu\u1ed7i, mi\u1ec5n l\u00e0 n\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c tr\u00f9ng v\u1edbi d\u1ea5u nh\u00e1y bao quanh ch\u00ednh chu\u1ed7i \u0111\u00f3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ed d\u1ee5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>var answer = \"T\u00f4i '\u1ed5n'\";\nvar answer = \"H\u1ecd g\u1ecdi anh \u00fd l\u00e0 'c\u00e1 m\u1eadp'\";\nvar answer = 'C\u1ea3nh s\u00e1t \u0111\u1eb7t bi\u1ec7t danh cho h\u1eafn l\u00e0 \"qu\u1ef7 m\u1eb7t c\u01b0\u1eddi\"';<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_60 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >M\u1ee5c l\u1ee5c<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\" role=\"button\"><label for=\"item-6577d6b22c360\" ><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input aria-label=\"Toggle\" aria-label=\"item-6577d6b22c360\"  type=\"checkbox\" id=\"item-6577d6b22c360\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/kiencang.net\/chuoi-trong-javascript\/#Do_dai_cua_chuoi\" title=\"\u0110\u1ed9 d\u00e0i c\u1ee7a chu\u1ed7i\">\u0110\u1ed9 d\u00e0i c\u1ee7a chu\u1ed7i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/kiencang.net\/chuoi-trong-javascript\/#Cac_ky_tu_dac_biet\" title=\"C\u00e1c k\u00fd t\u1ef1 \u0111\u1eb7c bi\u1ec7t\">C\u00e1c k\u00fd t\u1ef1 \u0111\u1eb7c bi\u1ec7t<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/kiencang.net\/chuoi-trong-javascript\/#Be_cac_dong_code_dai\" title=\"B\u1ebb c\u00e1c d\u00f2ng code d\u00e0i\">B\u1ebb c\u00e1c d\u00f2ng code d\u00e0i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/kiencang.net\/chuoi-trong-javascript\/#Chuoi_co_the_la_doi_tuong\" title=\"Chu\u1ed7i c\u00f3 th\u1ec3 l\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng\">Chu\u1ed7i c\u00f3 th\u1ec3 l\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Do_dai_cua_chuoi\"><\/span>\u0110\u1ed9 d\u00e0i c\u1ee7a chu\u1ed7i<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>B\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng thu\u1ed9c t\u00ednh <strong>length<\/strong>&nbsp;\u0111\u1ec3 t\u00ecm \u0111\u1ed9 d\u00e0i c\u1ee7a chu\u1ed7i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ed d\u1ee5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>var txt = \"Nguy\u1ec5n \u0110\u1ee9c Anh - Ki\u1ebfn c\u00e0ng\";\nvar sln = txt.length;<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cac_ky_tu_dac_biet\"><\/span>C\u00e1c k\u00fd t\u1ef1 \u0111\u1eb7c bi\u1ec7t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>B\u1edfi v\u00ec c\u00e1c chu\u1ed7i ph\u1ea3i \u0111\u01b0\u1ee3c vi\u1ebft b\u1eb1ng c\u00e1ch \u0111\u01b0a v\u00e0o trong d\u1ea5u nh\u00e1y, v\u00ec v\u1eady JavaScript s\u1ebd kh\u00f4ng hi\u1ec3u \u0111\u01b0\u1ee3c chu\u1ed7i nh\u01b0 th\u1ebf n\u00e0y:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var y = \"Tr\u01b0\u1eddng \u0111\u00f3 l\u00e0 \"ng\u00f4i tr\u01b0\u1eddng \u0111\u00e1ng s\u1ee3\" v\u1edbi h\u1ea7u h\u1ebft b\u1ecdn tr\u1ebb.\"<\/code><\/pre>\n\n\n\n<p>Chu\u1ed7i s\u1ebd b\u1ecb c\u1eaft nh\u1ecf th\u00e0nh &#8220;Tr\u01b0\u1eddng \u0111\u00f3 l\u00e0 &#8220;.<\/p>\n\n\n\n<p>G\u1ea3i ph\u00e1p \u0111\u1ec3 tr\u00e1nh r\u1eafc r\u1ed1i n\u00e0y l\u00e0 s\u1eed d\u1ee5ng <strong>k\u00fd t\u1ef1 escape<\/strong> \\<\/p>\n\n\n\n<p>D\u1ea5u s\u1eb9c ng\u01b0\u1ee3c (backslash) gi\u00fap \u0111\u01b0a c\u00e1c k\u00fd t\u1ef1 \u0111\u1eb7c bi\u1ec7t v\u00e0o trong chu\u1ed7i k\u00fd t\u1ef1:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ed d\u1ee5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>var x = 'H\u1ecd g\u1ecdi anh \u00fd l\u00e0 \\\"c\u00e1 m\u1eadp\\\"';<\/code><\/pre>\n\n\n\n<p>K\u00fd t\u1ef1 s\u1eb9c ng\u01b0\u1ee3c (\\) c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u00e8n k\u00fd t\u1ef1 \u0111\u1eb7c bi\u1ec7t v\u00e0o b\u00ean trong chu\u1ed7i.<\/p>\n\n\n\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 danh s\u00e1ch c\u00e1c k\u00fd t\u1ef1 \u0111\u1eb7c bi\u1ec7t c\u00f3 th\u1ec3 th\u00eam v\u00e0o chu\u1ed7i v\u0103n b\u1ea3n v\u1edbi d\u1ea5u s\u1eb9c ng\u01b0\u1ee3c:<\/p>\n\n\n\n<figure class=\"wp-block-table w3-table-all notranslate\"><table><tbody><tr><th>Code<\/th><th>\u0110\u1ea7u ra<\/th><\/tr><tr><td>\\&#8217;<\/td><td>d\u1ea5u nh\u00e1y \u0111\u01a1n<\/td><\/tr><tr><td>\\&#8221;<\/td><td>d\u1ea5u nh\u00e1y k\u00e9p<\/td><\/tr><tr><td>\\\\<\/td><td>backslash<\/td><\/tr><tr><td>\\n<\/td><td>d\u00f2ng m\u1edbi<\/td><\/tr><tr><td>\\r<\/td><td>carriage return<\/td><\/tr><tr><td>\\t<\/td><td>tab<\/td><\/tr><tr><td>\\b<\/td><td>kho\u1ea3ng tr\u1ed1ng<\/td><\/tr><tr><td>\\f<\/td><td>form feed<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Be_cac_dong_code_dai\"><\/span>B\u1ebb c\u00e1c d\u00f2ng code d\u00e0i<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u0110\u1ec3 vi\u1ec7c \u0111\u1ecdc \u0111\u01b0\u1ee3c d\u1ec5 d\u00e0ng, c\u00e1c nh\u00e0 l\u1eadp tr\u00ecnh th\u01b0\u1eddng tr\u00e1nh s\u1eed d\u1ee5ng c\u00e1c d\u00f2ng code c\u00f3 \u0111\u1ed9 d\u00e0i h\u01a1n 80 k\u00fd t\u1ef1.<\/p>\n\n\n\n<p>N\u1ebfu c\u00e2u l\u1ec7nh JavaScript kh\u00f4ng v\u1eeba trong m\u1ed9t d\u00f2ng, v\u1ecb tr\u00ed t\u1ed1t nh\u1ea5t \u0111\u1ec3 xu\u1ed1ng d\u00f2ng l\u00e0 b\u1ebb n\u00f3 \u1edf ph\u1ea7n ngay sau to\u00e1n t\u1eed:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ed d\u1ee5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>document.getElementById(\"demo\").innerHTML =\n \"Ki\u1ebfn c\u00e0ng.\";<\/code><\/pre>\n\n\n\n<p>B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 b\u1ebb \u0111o\u1ea1n code <strong>trong m\u1ed9t chu\u1ed7i v\u0103n b\u1ea3n<\/strong> v\u1edbi d\u1ea5u s\u1eb9c \u0111\u01a1n:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ed d\u1ee5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>document.getElementById(\"demo\").innerHTML = \"\u0110\u1ee9c Anh \\\n Plus!\";<\/code><\/pre>\n\n\n\n<p>Ph\u01b0\u01a1ng th\u1ee9c \\ kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n trogn ECMAScript (JavaScript).<\/p>\n\n\n\n<p>M\u1ed9t s\u1ed1 tr\u00ecnh duy\u1ec7t kh\u00f4ng cho ph\u00e9p kho\u1ea3ng tr\u1ed1ng sau k\u00fd t\u1ef1 \\<\/p>\n\n\n\n<p>C\u00e1ch an to\u00e0n (nh\u01b0ng ch\u1eadm h\u01a1n ch\u00fat \u00edt) khi b\u1ebb m\u1ed9t chu\u1ed7i d\u00e0i l\u00e0 s\u1eed d\u1ee5ng ph\u00e9p c\u1ed9ng chu\u1ed7i:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ed d\u1ee5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>document.getElementById(\"demo\").innerHTML = \"\u0110\u1ee9c Anh\" +\n \"Plus!\";<\/code><\/pre>\n\n\n\n<p>B\u1ea1n kh\u00f4ng th\u1ec3 b\u1ebb m\u1ed9t \u0111o\u1ea1n code v\u1edbi m\u1ed9t d\u1ea5u s\u1eb9c ng\u01b0\u1ee3c nh\u01b0 d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ed d\u1ee5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>document.getElementById(\"demo\").innerHTML = \\\n \"Ki\u1ebfn c\u00e0ng!\";<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Chuoi_co_the_la_doi_tuong\"><\/span>Chu\u1ed7i c\u00f3 th\u1ec3 l\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>B\u00ecnh th\u01b0\u1eddng, chu\u1ed7i trong JavaScript l\u00e0 c\u00e1c gi\u00e1 tr\u1ecb nguy\u00ean thu\u1ef7, \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb c\u00e1c ch\u1eef c\u00e1i:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var firstName=\"\u0110\u1ee9c Anh\" <\/code><\/pre>\n\n\n\n<p>Nh\u01b0ng chu\u1ed7i c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a nh\u01b0 l\u00e0 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng v\u1edbi t\u1eeb kho\u00e1 new:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var firstName= new String(\"\u0110\u1ee9c Anh\")<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ed d\u1ee5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>var x = \"\u0110\u1ee9c Anh\"; \/\/ ki\u1ec3u c\u1ee7a x s\u1ebd tr\u1ea3 v\u1ec1 chu\u1ed7i\nvar y = new String(\"\u0110\u1ee9c Anh\");\n \/\/ ki\u1ec3u c\u1ee7a y s\u1ebd tr\u1ea3 v\u1ec1 \u0111\u1ed1i t\u01b0\u1ee3ng<\/code><\/pre>\n\n\n\n<p>\u0110\u1eebng t\u1ea1o c\u00e1c chu\u1ed7i th\u00e0nh d\u1ea1ng \u0111\u1ed1i t\u01b0\u1ee3ng. N\u00f3 s\u1ebd l\u00e0m gi\u1ea3m t\u1ed1c \u0111\u1ed9 th\u1ef1c thi l\u1ec7nh \u0111i nhi\u1ec1u. T\u1eeb kho\u00e1 <strong>new <\/strong>l\u00e0m ph\u1ee9c t\u1ea1p m\u00e3<strong>. <\/strong>\u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c k\u1ebft qu\u1ea3 kh\u00f4ng mong \u0111\u1ee3i.<\/p>\n\n\n\n<p>Khi s\u1eed d\u1ee5ng == (to\u00e1n t\u1eed b\u1eb1ng) b\u1ea1n c\u1ea7n ch\u00fa \u00fd m\u1ed9t v\u00e0i th\u1ee9.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ed d\u1ee5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>var x = \"\u0110\u1ee9c Anh\";\nvar y = new String(\"\u0110\u1ee9c Anh\");\/\/ (x == y) l\u00e0 \u0111\u00fang v\u00ec x v\u00e0 y c\u00f3 c\u00f9ng gi\u00e1 tr\u1ecb.<\/code><\/pre>\n\n\n\n<p>Khi s\u1eed d\u1ee5ng to\u00e1n t\u1eed === (b\u1eb1ng ch\u1eb7t), th\u00ec x v\u00e0 y s\u1ebd kh\u00f4ng c\u00f2n b\u1eb1ng ch\u1eb7t n\u1eefa v\u00ec, b\u1eb1ng ch\u1eb7t y\u00eau c\u1ea7u ph\u1ea3i b\u1eb1ng c\u1ea3 v\u1ec1 gi\u00e1 tr\u1ecb v\u00e0 ki\u1ec3u, trong khi x v\u00e0 y l\u00e0 hai ki\u1ec3u kh\u00e1c nhau.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ed d\u1ee5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>var x = \"\u0110\u1ee9c Anh\";\nvar y = new String(\"\u0110\u1ee9c Anh\");\/\/ (x === y) kh\u00f4ng \u0111\u00fang b\u1edfi v\u00ec x v\u00e0 y l\u00e0 hai ki\u1ec3u kh\u00e1c nhau (m\u1ed9t ki\u1ec3u l\u00e0 chu\u1ed7i, m\u1ed9t ki\u1ec3u l\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng).<\/code><\/pre>\n\n\n\n<p>Ho\u1eb7c th\u1eadm ch\u00ed c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00f4ng th\u1ec3 so s\u00e1nh \u0111\u01b0\u1ee3c:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ed d\u1ee5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>var x = new String(\"\u0110\u1ee9c Anh\");\nvar y = new String(\"\u0110\u1ee9c Anh\");\/\/ (x == y) l\u00e0 sai b\u1edfi v\u00ec x v\u00e0 y l\u00e0 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00e1c nhau\n \/\/ (x == x) l\u00e0 \u0111\u00fang b\u1edfi v\u00ec c\u1ea3 hai ch\u1ec9 c\u00f9ng m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng.<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Chu\u1ed7i trong JavaScript d\u00f9ng \u0111\u1ec3 l\u01b0u gi\u1eef v\u00e0 thao t\u00e1c v\u0103n b\u1ea3n. M\u1ed9t chu\u1ed7i trong JavaScript \u0111\u01a1n gi\u1ea3n d\u00f9ng \u0111\u1ec3 l\u01b0u gi\u1eef d\u00e3y k\u00fd t\u1ef1 nh\u01b0 l\u00e0 &#8220;Nguy\u1ec5n \u0110\u1ee9c Anh&#8221;. M\u1ed9t chu\u1ed7i l\u00e0 v\u0103n b\u1ea3n b\u1ea5t k\u1ef3 n\u1eb1m trong d\u1ea5u nh\u00e1y, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng d\u1ea5u nh\u00e1y \u0111\u01a1n ho\u1eb7c d\u1ea5u nh\u00e1y k\u00e9p: V\u00ed d\u1ee5 &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[236],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Chu\u1ed7i trong JavaScript &#8226; Ki\u1ebfn c\u00e0ng<\/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:\/\/kiencang.net\/chuoi-trong-javascript\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Chu\u1ed7i trong JavaScript &#8226; Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"og:description\" content=\"Chu\u1ed7i trong JavaScript d\u00f9ng \u0111\u1ec3 l\u01b0u gi\u1eef v\u00e0 thao t\u00e1c v\u0103n b\u1ea3n. M\u1ed9t chu\u1ed7i trong JavaScript \u0111\u01a1n gi\u1ea3n d\u00f9ng \u0111\u1ec3 l\u01b0u gi\u1eef d\u00e3y k\u00fd t\u1ef1 nh\u01b0 l\u00e0 &#8220;Nguy\u1ec5n \u0110\u1ee9c Anh&#8221;. M\u1ed9t chu\u1ed7i l\u00e0 v\u0103n b\u1ea3n b\u1ea5t k\u1ef3 n\u1eb1m trong d\u1ea5u nh\u00e1y, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng d\u1ea5u nh\u00e1y \u0111\u01a1n ho\u1eb7c d\u1ea5u nh\u00e1y k\u00e9p: V\u00ed d\u1ee5 &hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/kiencang.net\/chuoi-trong-javascript\/\" \/>\n<meta property=\"og:site_name\" content=\"Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/anhducnguyen87\/\" \/>\n<meta property=\"article:published_time\" content=\"2016-07-05T08:27:01+00:00\" \/>\n<meta name=\"author\" content=\"Nguy\u1ec5n \u0110\u1ee9c Anh\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nguy\u1ec5n \u0110\u1ee9c Anh\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 ph\u00fat\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Chu\u1ed7i trong JavaScript &#8226; Ki\u1ebfn c\u00e0ng","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/kiencang.net\/chuoi-trong-javascript\/","og_locale":"vi_VN","og_type":"article","og_title":"Chu\u1ed7i trong JavaScript &#8226; Ki\u1ebfn c\u00e0ng","og_description":"Chu\u1ed7i trong JavaScript d\u00f9ng \u0111\u1ec3 l\u01b0u gi\u1eef v\u00e0 thao t\u00e1c v\u0103n b\u1ea3n. 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