{"id":7134,"date":"2015-04-01T19:29:38","date_gmt":"2015-04-01T23:29:38","guid":{"rendered":"http:\/\/bangla.salearningschool.com\/?p=7134"},"modified":"2015-11-11T06:53:04","modified_gmt":"2015-11-11T11:53:04","slug":"javascript-type-conversion","status":"publish","type":"post","link":"http:\/\/bangla.sitestree.com\/?p=7134","title":{"rendered":"\u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u099f\u09be\u0987\u09aa \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0\u0995\u09b0\u09a3 (JavaScript Type Conversion)"},"content":{"rendered":"<p>\u0986\u09a6\u09a8\u09be\u09a8 \u09a8\u09be\u09b9\u09bf\u09a6<br \/>\n\u09b8\u09b0\u0995\u09be\u09b0\u09bf \u09a4\u09bf\u09a4\u09c1\u09ae\u09c0\u09b0 \u0995\u09b2\u09c7\u099c<\/p>\n<p>&nbsp;<\/p>\n<p>\u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0 \u09a5\u09c7\u0995\u09c7 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0\u09c7 \u09aa\u09b0\u09bf\u09ac\u09b0\u09cd\u09a4\u09a8, \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u09a5\u09c7\u0995\u09c7 \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u098f \u09aa\u09b0\u09bf\u09ac\u09b0\u09cd\u09a4\u09a8, \u09ac\u09c1\u09b2\u09bf\u09af\u09bc\u09be\u09a8 \u09a5\u09c7\u0995\u09c7 \u09ac\u09c1\u09b2\u09bf\u09df\u09be\u09a8\u09c7 \u09aa\u09b0\u09bf\u09ac\u09b0\u09cd\u09a4\u09a8 \u0995\u09b0\u09be \u09af\u09be\u09df \u0964<\/p>\n<h2>\u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u09a1\u09c7\u099f\u09be \u09aa\u09cd\u09b0\u0995\u09be\u09b0\u09ad\u09c7\u09a6<\/h2>\n<p>\u09ae\u09be\u09a8 \u09a7\u09be\u09b0\u09a3 \u0995\u09b0\u09a4\u09c7 \u09aa\u09be\u09b0\u09c7 \u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f\u09c7 \u098f\u09ae\u09a8 5 \u09a7\u09b0\u09a8\u09c7\u09b0 \u09a1\u09be\u099f\u09be \u099f\u09be\u0987\u09aa \u0986\u099b\u09c7:<\/p>\n<ul>\n<li>\u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982<\/li>\n<li>\u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0<\/li>\n<li>\u09ac\u09c1\u09b2\u09bf\u09af\u09bc\u09be\u09a8<\/li>\n<li>\u0985\u09ac\u099c\u09c7\u0995\u09cd\u099f<\/li>\n<li>\u09ab\u09be\u0982\u09b6\u09a8<\/li>\n<\/ul>\n<p>\u0985\u09ac\u099c\u09c7\u0995\u09cd\u099f \u09e9 \u09a7\u09b0\u09a8\u09c7\u09b0 \u09b9\u09af\u09bc:<\/p>\n<ul>\n<li>\u0985\u09ac\u099c\u09c7\u0995\u09cd\u099f<\/li>\n<li>\u09a4\u09be\u09b0\u09bf\u0996<\/li>\n<li>\u0985\u09cd\u09af\u09be\u09b0\u09c7 \u09ac\u09be \u09b6\u09cd\u09b0\u09c7\u09a3\u09c0\u09ac\u09bf\u09a8\u09cd\u09af\u09be\u09b8<\/li>\n<\/ul>\n<p>\u098f\u09ac\u0982 \u09e8 \u09a7\u09b0\u09a8\u09c7\u09b0 \u09a1\u09be\u099f\u09be \u099f\u09be\u0987\u09aa\u09c7\u09b0 \u09ae\u09be\u09a8 \u09a5\u09be\u0995\u09a4\u09c7 \u09aa\u09be\u09b0\u09c7 \u09a8\u09be :<\/p>\n<ul>\n<li>\u0985\u0995\u09be\u09b0\u09cd\u09af\u0995\u09b0<\/li>\n<li>\u0985\u09a8\u09bf\u09b0\u09cd\u09a6\u09bf\u09b7\u09cd\u099f<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2>typeof \u0985\u09aa\u09be\u09b0\u09c7\u099f\u09b0<\/h2>\n<p>\u098f\u0995\u099f\u09bf \u09aa\u09b0\u09bf\u09ac\u09b0\u09cd\u09a4\u09a8\u09b6\u09c0\u09b2 \u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u098f \u09a1\u09be\u099f\u09be \u099f\u09be\u0987\u09aa \u0996\u09c1\u0981\u099c\u09c7 \u09aa\u09c7\u09a4\u09c7 \u0985\u09be\u09aa\u09a8\u09bf typeof \u0985\u09aa\u09be\u09b0\u09c7\u099f\u09b0 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09a4\u09c7 \u09aa\u09be\u09b0\u09c7\u09a8 \u0964<br \/>\n<strong>\u0989\u09a6\u09be\u09b9\u09b0\u09a3<\/strong><\/p>\n<hr \/>\n<pre>typeof \"John\"\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ Returns string\r\ntypeof 3.14\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ Returns number\r\ntypeof NaN\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ Returns number\r\ntypeof false\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ Returns boolean\r\ntypeof [1,2,3,4]\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ Returns object\r\ntypeof {name:'John', age:34}\u00a0 \/\/ Returns object\r\ntypeof new Date()\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ Returns object\r\ntypeof function () {}\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ Returns function\r\ntypeof myCar\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ Returns undefined (if myCar is not declared)\r\ntypeof null\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ Returns object<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<p><strong>\u09b2\u0995\u09cd\u09b7\u09cd\u09af \u0995\u09b0\u09c1\u09a8 :<\/strong><\/p>\n<ul>\n<li>NaN \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0\u09c7\u09b0 \u09a1\u09be\u099f\u09be \u099f\u09be\u0987\u09aa<\/li>\n<li>\u0985\u09cd\u09af\u09be\u09b0\u09c7\u09b0 \u0985\u09ac\u099c\u09c7\u0995\u09cd\u099f\u09c7\u09b0 \u09a1\u09be\u099f\u09be \u099f\u09be\u0987\u09aa<\/li>\n<li>\u09a4\u09be\u09b0\u09bf\u0996\u09c7\u09b0 \u0985\u09ac\u099c\u09c7\u0995\u09cd\u099f\u09c7\u09b0 \u09a1\u09be\u099f\u09be \u099f\u09be\u0987\u09aa<\/li>\n<li>Null \u0985\u09ac\u099c\u09c7\u0995\u09cd\u099f\u09c7\u09b0 \u09a1\u09be\u099f\u09be \u099f\u09be\u0987\u09aa<\/li>\n<li>\u098f\u0995\u099f\u09bf \u0985\u09a8\u09bf\u09b0\u09cd\u09a7\u09be\u09b0\u09bf\u09a4 \u09aa\u09b0\u09bf\u09ac\u09b0\u09cd\u09a4\u09a8\u09b6\u09c0\u09b2 \u098f\u09b0 \u09a1\u09be\u099f\u09be \u099f\u09be\u0987\u09aa<\/li>\n<\/ul>\n<p>\u09af\u09a6\u09bf \u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u0985\u09ac\u099c\u09c7\u0995\u09cd\u099f \u0985\u09cd\u09af\u09be\u09b0\u09c7 (\u0985\u09a5\u09ac\u09be \u09a4\u09be\u09b0\u09bf\u0996) \u09b9\u09df \u09a4\u09be\u09b9\u09b2\u09c7 \u0986\u09aa\u09a8\u09bf \u0985\u09b0\u09cd\u09a5 \u09ac\u09be \u09b8\u09c0\u09ae\u09be \u09a8\u09bf\u09b0\u09cd\u09a7\u09be\u09b0\u09a3 \u0995\u09b0\u09be\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7 typeof \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09a4\u09c7 \u09aa\u09be\u09b0\u09ac\u09c7\u09a8 \u09a8\u09be \u0964<\/p>\n<p>&nbsp;<\/p>\n<h2>Typeof \u09a1\u09be\u099f\u09be \u099f\u09be\u0987\u09aa<\/h2>\n<p>typeof \u0985\u09aa\u09be\u09b0\u09c7\u099f\u09b0 \u09aa\u09b0\u09bf\u09ac\u09b0\u09cd\u09a4\u09a8\u09b6\u09c0\u09b2 \u09a8\u09af\u09bc\u0964 \u098f\u099f\u09bf \u098f\u0995\u099f\u09bf \u0985\u09aa\u09be\u09b0\u09c7\u099f\u09b0\u0964 \u0985\u09aa\u09be\u09b0\u09c7\u099f\u09b0 (+ + &#8211; * \/) \u098f\u09b0 \u0995\u09cb\u09a8 \u09a1\u09be\u099f\u09be \u099f\u09be\u0987\u09aa \u09a5\u09be\u0995\u09c7 \u09a8\u09be \u0964<br \/>\n\u0995\u09bf\u09a8\u09cd\u09a4\u09c1, typeof \u0985\u09aa\u09be\u09b0\u09c7\u099f\u09b0 \u09b8\u09ac\u09b8\u09ae\u09af\u09bc \u098f\u0995\u099f\u09bf \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u09aa\u09cd\u09b0\u09a6\u09be\u09a8 \u0995\u09b0\u09c7 operand \u098f\u09b0 \u09b8\u09ae\u09df \u0964<\/p>\n<p>&nbsp;<\/p>\n<h2>\u0995\u09a8\u09b8\u09cd\u099f\u09be\u0995\u09b6\u09a8 \u09aa\u09cd\u09b0\u09aa\u09be\u09b0\u099f\u09bf<\/h2>\n<p>\u09b8\u09ac \u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f\u09c7\u09b0 \u099c\u09a8\u09cd\u09af\u0987 constructor property, constructor function \u09aa\u09cd\u09b0\u09a6\u09be\u09a8 \u0995\u09b0\u09c7 \u0964<br \/>\n<strong>\u0989\u09a6\u09be\u09b9\u09b0\u09a3<\/strong><\/p>\n<hr \/>\n<pre>\"John\".constructor\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0 \/\/ Returns function String()\u00a0  { [native code] }\r\n(3.14).constructor\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ Returns function Number()\u00a0  { [native code] }\r\nfalse.constructor\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ Returns function Boolean()  { [native code] }\r\n[1,2,3,4].constructor\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ Returns function Array()\u00a0\u00a0  { [native code] }\r\n{name:'John', age:34}.constructor\u00a0 \/\/ Returns function Object()\u00a0  { [native code] }\r\nnew Date().constructor\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ Returns function Date()\u00a0\u00a0\u00a0  { [native code] }\r\nfunction () {}.constructor\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ Returns function Function() { [native code] }<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>\u0986\u09aa\u09a8\u09bf \u0995\u09a8\u09b8\u09cd\u099f\u09be\u0995\u09b6\u09a8 \u09aa\u09cd\u09b0\u09aa\u09be\u09b0\u099f\u09bf \u0996\u09c1\u0981\u099c\u09c7 \u09a6\u09c7\u0996\u09a4\u09c7 \u09aa\u09be\u09b0\u09c7\u09a8 \u098f\u09b0 \u0995\u09cb\u09a8 \u0985\u09ac\u099c\u09c7\u0995\u09cd\u099f \u0985\u09cd\u09af\u09be\u09b0\u09c7 \u0986\u099b\u09c7 \u0995\u09bf\u09a8\u09be (contains the word &#8220;Array&#8221;) :<br \/>\n<strong>\u0989\u09a6\u09be\u09b9\u09b0\u09a3<\/strong><\/p>\n<hr \/>\n<pre>function isArray(myArray) {\r\n\u00a0\u00a0\u00a0 return myArray.constructor.toString().indexOf(\"Array\") &gt; -1;\r\n}<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>\u0986\u09aa\u09a8\u09bf \u0995\u09a8\u09b8\u09cd\u099f\u09be\u0995\u09b6\u09a8 \u09aa\u09cd\u09b0\u09aa\u09be\u09b0\u099f\u09bf \u0996\u09c1\u0981\u099c\u09c7 \u09a6\u09c7\u0996\u09a4\u09c7 \u09aa\u09be\u09b0\u09c7\u09a8 \u098f\u09b0 \u0995\u09cb\u09a8 \u0985\u09ac\u099c\u09c7\u0995\u09cd\u099f \u09a4\u09be\u09b0\u09bf\u0996 \u0995\u09bf\u09a8\u09be (contains the word &#8220;Date&#8221;) :<br \/>\n<strong>\u0989\u09a6\u09be\u09b9\u09b0\u09a3<\/strong><\/p>\n<hr \/>\n<pre>function isDate(myDate) {\r\n\u00a0\u00a0\u00a0 return myDate.constructor.toString().indexOf(\"Date\") &gt; -1;\r\n}<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<h2>\u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u099f\u09be\u0987\u09aa \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0\u0995\u09b0\u09a3<\/h2>\n<p>\u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u09ad\u09c7\u09b0\u09bf\u09af\u09bc\u09c7\u09ac\u09b2 \u09a8\u09a4\u09c1\u09a8 \u098f\u0995\u099f\u09bf \u09ad\u09c7\u09b0\u09bf\u09df\u09c7\u09ac\u09b2\u09c7 \u098f\u09ac\u0982 \u0985\u09a8\u09cd\u09af \u09a1\u09be\u099f\u09be \u099f\u09be\u0987\u09aa\u09c7 \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0\u09bf\u09a4 \u0995\u09b0\u09be \u09af\u09c7\u09a4\u09c7 \u09aa\u09be\u09b0\u09c7:<\/p>\n<ul>\n<li>\u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u09ab\u09be\u0982\u09b6\u09a8 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7<\/li>\n<li>\u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f\u09c7\u09b0 \u09ae\u09be\u09a7\u09cd\u09af\u09ae\u09c7 \u09b8\u09cd\u09ac\u09af\u09bc\u0982\u0995\u09cd\u09b0\u09bf\u09af\u09bc\u09ad\u09be\u09ac\u09c7<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2>\u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0\u0995\u09c7 \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u098f \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0<\/h2>\n<p><span id=\"result_box\" class=\"short_text\" lang=\"bn\"><span class=\"hps\">\u0997\u09cd\u09b2\u09cb\u09ac\u09be\u09b2<\/span> <span class=\"hps\">\u09aa\u09a6\u09cd\u09a7\u09a4\u09bf<\/span><\/span> <strong>String()<\/strong> \u09a6\u09bf\u09df\u09c7 \u09b8\u0982\u0996\u09cd\u09af\u09be\u0995\u09c7 \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u098f \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0 \u0995\u09b0\u09a4\u09c7 \u09aa\u09be\u09b0\u09c7 \u0964<\/p>\n<p>\u098f\u099f\u09bf \u09af\u09c7\u0995\u09cb\u09a8\u09cb \u09a7\u09b0\u09a8\u09c7\u09b0 \u09b8\u0982\u0996\u09cd\u09af\u09be\u09df , \u09b2\u09bf\u099f\u09be\u09b0\u09c7\u09b2, \u09ad\u09c7\u09b0\u09bf\u09af\u09bc\u09c7\u09ac\u09b2 \u09ac\u09be \u098f\u0995\u09cd\u09b8\u09aa\u09cd\u09b0\u09c7\u09b6\u09a8 \u098f \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09be \u09af\u09be\u09df :<\/p>\n<p><strong>\u0989\u09a6\u09be\u09b9\u09b0\u09a3<\/strong><\/p>\n<hr \/>\n<pre>String(x)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ returns a string from a number variable x\r\nString(123)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ returns a string from a number literal 123\r\nString(100 + 23)\u00a0 \/\/ returns a string from a number from an expression<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>\u09b8\u0982\u0996\u09cd\u09af\u09be \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf <strong>toString()<\/strong> \u0993 \u098f\u0995\u0987 \u09a7\u09b0\u09a8\u09c7\u09b0 \u0995\u09be\u099c \u0995\u09b0\u09c7 \u0964<br \/>\n\u0989\u09a6\u09be\u09b9\u09b0\u09a3<\/p>\n<hr \/>\n<pre>x.toString()\r\n(123).toString()\r\n(100 + 23).toString()<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>\u0986\u09aa\u09a8\u09bf\u00a0 (<a href=\"http:\/\/bangla.salearningschool.com\/%e0%a6%9c%e0%a6%be%e0%a6%ad%e0%a6%be%e0%a6%b8%e0%a7%8d%e0%a6%95%e0%a7%8d%e0%a6%b0%e0%a6%bf%e0%a6%aa%e0%a7%8d%e0%a6%9f-%e0%a6%a8%e0%a6%be%e0%a6%ae%e0%a7%8d%e0%a6%ac%e0%a6%be%e0%a6%b0-%e0%a6%ae%e0%a7%87\/\" target=\"_blank\">\u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0 \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf<\/a>) \u0985\u09cd\u09a7\u09cd\u09af\u09be\u09df\u09c7 \u09b8\u0982\u0996\u09cd\u09af\u09be\u0995\u09c7 \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u098f \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0 \u0995\u09b0\u09be\u09b0 \u0986\u09b0\u09cb \u0985\u09a8\u09c7\u0995 \u09ae\u09c7\u09a5\u09a1 \u0996\u09c1\u099c\u09c7 \u09aa\u09be\u09ac\u09c7\u09a8 :<\/p>\n<table>\n<tbody>\n<tr>\n<td style=\"text-align: center;\" width=\"169\"><strong>\u09aa\u09a6\u09cd\u09a7\u09a4\u09bf<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"469\"><strong>\u09ac\u09b0\u09cd\u09a3\u09a8\u09be<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"169\">toExponential()<\/td>\n<td width=\"469\">\u09ac\u09cd\u09af\u09be\u0996\u09cd\u09af\u09be\u09ae\u09c2\u09b2\u0995 \u098f\u0995\u099f\u09bf \u09b8\u0982\u0996\u09cd\u09af\u09be\u09b0 \u09b8\u09be\u09a5\u09c7 \u09b8\u09c2\u099a\u0995 \u09a8\u09cb\u099f\u09c7\u09b6\u09a8 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7 \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u09ab\u09c7\u09b0\u09ce \u09aa\u09be\u0993\u09df\u09be<\/td>\n<\/tr>\n<tr>\n<td width=\"169\">toFixed()<\/td>\n<td width=\"469\">\u09b8\u09cd\u09a5\u09be\u09af\u09bc\u09c0 \u098f\u0995\u099f\u09bf \u09a8\u09bf\u09a6\u09bf\u09b7\u09cd\u099f \u09b8\u0982\u0996\u09cd\u09af\u09be\u09b0 \u09b8\u09be\u09a5\u09c7 \u09a6\u09b6\u09ae\u09bf\u0995 \u09b8\u0982\u0996\u09cd\u09af\u09be \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7 \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u09ab\u09c7\u09b0\u09ce \u09aa\u09be\u0993\u09df\u09be<\/td>\n<\/tr>\n<tr>\n<td width=\"169\">toPrecision()<\/td>\n<td width=\"469\">\u09b8\u09cd\u09aa\u09b7\u09cd\u099f\u09a4\u09be \u098f\u0995\u099f\u09bf \u09a8\u09bf\u09a6\u09bf\u09b7\u09cd\u099f \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af\u09b0 \u09b8\u09be\u09a5\u09c7 \u098f\u0995\u099f\u09bf \u09b8\u0982\u0996\u09cd\u09af\u09be \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09c7 \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u09ab\u09c7\u09b0\u09ce \u09aa\u09be\u0993\u09df\u09be<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<h2>Booleans \u09a5\u09c7\u0995\u09c7 \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u098f \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0<\/h2>\n<p><span id=\"result_box\" class=\"short_text\" lang=\"bn\"><span class=\"hps\">\u0997\u09cd\u09b2\u09cb\u09ac\u09be\u09b2<\/span> <span class=\"hps\">\u09aa\u09a6\u09cd\u09a7\u09a4\u09bf<\/span><\/span> <strong>String(),<\/strong> Booleans \u0995\u09c7 \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u098f \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0 \u0995\u09b0\u09a4\u09c7 \u09aa\u09be\u09b0\u09c7 :<br \/>\n<strong>\u0989\u09a6\u09be\u09b9\u09b0\u09a3<\/strong><\/p>\n<hr \/>\n<pre>String(false)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ returns \"false\"\r\nString(true)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ returns \"true\"<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>\u09ac\u09c1\u09b2\u09bf\u09af\u09bc\u09be\u09a8 \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf <strong>toString()<\/strong> \u0993 \u098f\u0995\u0987 \u09a7\u09b0\u09a8\u09c7\u09b0 \u0995\u09be\u099c \u0995\u09b0\u09c7 \u0964<\/p>\n<hr \/>\n<pre>false.toString()\u00a0\u00a0\u00a0\u00a0 \/\/ returns \"false\"\r\ntrue.toString()\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ returns \"true\"<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<h2>\u09a4\u09be\u09b0\u09bf\u0996\u0995\u09c7 \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u098f \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0<\/h2>\n<p><span id=\"result_box\" class=\"short_text\" lang=\"bn\"><span class=\"hps\">\u0997\u09cd\u09b2\u09cb\u09ac\u09be\u09b2<\/span> <span class=\"hps\">\u09aa\u09a6\u09cd\u09a7\u09a4\u09bf<\/span><\/span> <strong>String()<\/strong>\u00a0<strong>\u09a6\u09bf\u09df\u09c7<\/strong> \u09a4\u09be\u09b0\u09bf\u0996\u0995\u09c7 \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u098f \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0 \u0995\u09b0\u09a4\u09c7 \u09aa\u09be\u09b0\u09c7 :<\/p>\n<hr \/>\n<pre>String(Date()) \/\/ returns Thu Jul 17 2014 15:38:19 GMT+0200 (W. Europe Daylight Time)<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>\u09a4\u09be\u09b0\u09bf\u0996\u09c7\u09b0 \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf\u00a0<strong>toString()<\/strong> \u0993 \u098f\u0995\u0987 \u09a7\u09b0\u09a8\u09c7\u09b0 \u0995\u09be\u099c \u0995\u09b0\u09c7 \u0964<br \/>\n<strong>\u0989\u09a6\u09be\u09b9\u09b0\u09a3<\/strong><\/p>\n<hr \/>\n<pre>Date().toString() \/\/ returns Thu Jul 17 2014 15:38:19 GMT+0200 (W. Europe Daylight Time)<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>\u0986\u09aa\u09a8\u09bf\u00a0 (<a href=\"http:\/\/bangla.salearningschool.com\/%e0%a6%9c%e0%a6%be%e0%a6%ad%e0%a6%be%e0%a6%b8%e0%a7%8d%e0%a6%95%e0%a7%8d%e0%a6%b0%e0%a6%bf%e0%a6%aa%e0%a7%8d%e0%a6%9f-%e0%a6%a1%e0%a7%87%e0%a6%9f-%e0%a6%ae%e0%a7%87%e0%a6%a5%e0%a6%a1-javascript-date\/\" target=\"_blank\">\u09a1\u09c7\u099f \u09ae\u09c7\u09a5\u09a1<\/a>) \u0985\u09cd\u09a7\u09cd\u09af\u09be\u09df\u09c7 \u09b8\u0982\u0996\u09cd\u09af\u09be\u0995\u09c7 \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u098f \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0 \u0995\u09b0\u09be\u09b0 \u0986\u09b0\u09cb \u0985\u09a8\u09c7\u0995 \u09ae\u09c7\u09a5\u09a1 \u0996\u09c1\u099c\u09c7 \u09aa\u09be\u09ac\u09c7\u09a8 :<\/p>\n<table>\n<tbody>\n<tr>\n<td style=\"text-align: center;\" width=\"133\"><strong>\u09ae\u09c7\u09a5\u09a1<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"264\"><strong>\u09ac\u09b0\u09cd\u09a3\u09a8\u09be<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"133\">getDate()<\/td>\n<td width=\"264\">\u09a4\u09be\u09b0\u09bf\u0996\u0995\u09c7 \u09b8\u0982\u0996\u09cd\u09af\u09be \u09b9\u09bf\u09b8\u09c7\u09ac\u09c7 \u0997\u09cd\u09b0\u09b9\u09a3 \u0995\u09b0\u09c7 (1-31)<\/td>\n<\/tr>\n<tr>\n<td width=\"133\">getDay()<\/td>\n<td width=\"264\">\u09b8\u09aa\u09cd\u09a4\u09be\u09b9\u0995\u09c7 \u09b8\u0982\u0996\u09cd\u09af\u09be \u09b9\u09bf\u09b8\u09c7\u09ac\u09c7 \u0997\u09cd\u09b0\u09b9\u09a3 \u0995\u09b0\u09c7 (0-6)<\/td>\n<\/tr>\n<tr>\n<td width=\"133\">getFullYear()<\/td>\n<td width=\"264\">\u09ac\u099b\u09b0\u09c7\u09b0 \u099a\u09be\u09b0\u099f\u09bf \u0985\u0999\u09cd\u0995 \u0997\u09cd\u09b0\u09b9\u09a3 \u0995\u09b0\u09c7\u00a0 (YYYY)<\/td>\n<\/tr>\n<tr>\n<td width=\"133\">getHours()<\/td>\n<td width=\"264\">\u0998\u09a8\u09cd\u099f\u09be\u0995\u09c7 \u0997\u09cd\u09b0\u09b9\u09a3 \u0995\u09b0\u09c7 (0-23)<\/td>\n<\/tr>\n<tr>\n<td width=\"133\">getMilliseconds()<\/td>\n<td width=\"264\">\u09ae\u09bf\u09b2\u09bf \u09b8\u09c7\u0995\u09c7\u09a8\u09cd\u09a1 \u0995\u09c7 \u0997\u09cd\u09b0\u09b9\u09a3 \u0995\u09b0\u09c7 (0-999)<\/td>\n<\/tr>\n<tr>\n<td width=\"133\">getMinutes()<\/td>\n<td width=\"264\">\u09ae\u09bf\u09a8\u09bf\u099f\u0995\u09c7 \u0997\u09cd\u09b0\u09b9\u09a3 \u0995\u09b0\u09c7 (0-59)<\/td>\n<\/tr>\n<tr>\n<td width=\"133\">getMonth()<\/td>\n<td width=\"264\">\u09ae\u09be\u09b8\u0995\u09c7 \u0997\u09cd\u09b0\u09b9\u09a3 \u0995\u09b0\u09c7 (0-11)<\/td>\n<\/tr>\n<tr>\n<td width=\"133\">getSeconds()<\/td>\n<td width=\"264\">\u09b8\u09c7\u0995\u09c7\u09a8\u09cd\u09a1 \u0995\u09c7 \u0997\u09cd\u09b0\u09b9\u09a3 \u0995\u09b0\u09c7 (0-59)<\/td>\n<\/tr>\n<tr>\n<td width=\"133\">getTime()<\/td>\n<td width=\"264\">\u09b8\u09ae\u09df\u0995\u09c7 \u0997\u09cd\u09b0\u09b9\u09a3 \u0995\u09b0\u09c7 (\u09ae\u09bf\u09b2\u09bf\u09b8\u09c7\u0995\u09c7\u09a8\u09cd\u09a1 \u099c\u09be\u09a8\u09c1\u09af\u09bc\u09be\u09b0\u09c0 1st 1970 \u09a5\u09c7\u0995\u09c7)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<h2>\u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u0995\u09c7 \u09b8\u0982\u0996\u09cd\u09af\u09be\u09df \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0<\/h2>\n<p><span id=\"result_box\" class=\"short_text\" lang=\"bn\"><span class=\"hps\">\u0997\u09cd\u09b2\u09cb\u09ac\u09be\u09b2<\/span> <span class=\"hps\">\u09aa\u09a6\u09cd\u09a7\u09a4\u09bf<\/span><\/span>\u00a0<strong>Number()<\/strong> \u09a6\u09bf\u09df\u09c7 \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982\u0995\u09c7 \u09b8\u0982\u0996\u09cd\u09af\u09be\u09df \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0 \u0995\u09b0\u09a4\u09c7 \u09aa\u09be\u09b0\u09c7\u09a8 \u0964<\/p>\n<p>\u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u09a8\u09ae\u09cd\u09ac\u09b0 \u09a7\u09be\u09b0\u09a3\u0995\u09be\u09b0\u09c0 (&#8220;3.14&#8221; ) \u0995\u09c7 (3.14 ) \u098f \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0 \u0964<\/p>\n<p>\u0996\u09be\u09b2\u09bf \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u0995\u09c7 0 \u09a4\u09c7 \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0 \u0964<\/p>\n<p>\u0985\u09a8\u09cd\u09af\u09be\u09a8\u0997\u09c8\u09c1\u09b2\u09cb\u0995\u09c7 NaN (\u09a8\u09ae\u09cd\u09ac\u09b0 \u09a8\u09df) \u098f \u09aa\u09b0\u09bf\u09ac\u09b0\u09cd\u09a4\u09a8 \u0964<\/p>\n<hr \/>\n<pre>Number(\"3.14\")\u00a0\u00a0\u00a0 \/\/ returns 3.14\r\nNumber(\" \")\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ returns 0\r\nNumber(\"\")\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ returns 0\r\nNumber(\"99 88\")\u00a0\u00a0 \/\/ returns NaN<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>\u0986\u09aa\u09a8\u09bf\u00a0 (<a href=\"http:\/\/bangla.salearningschool.com\/%e0%a6%9c%e0%a6%be%e0%a6%ad%e0%a6%be%e0%a6%b8%e0%a7%8d%e0%a6%95%e0%a7%8d%e0%a6%b0%e0%a6%bf%e0%a6%aa%e0%a7%8d%e0%a6%9f-%e0%a6%a8%e0%a6%be%e0%a6%ae%e0%a7%8d%e0%a6%ac%e0%a6%be%e0%a6%b0-%e0%a6%ae%e0%a7%87\/\" target=\"_blank\">\u09a8\u09be\u09ae\u09cd\u09ac\u09b0 \u09ae\u09c7\u09a5\u09a1<\/a>) \u0985\u09cd\u09a7\u09cd\u09af\u09be\u09df\u09c7 \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u0995\u09c7 \u09b8\u0982\u0996\u09cd\u09af\u09be\u09df \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0 \u0995\u09b0\u09be\u09b0 \u0986\u09b0\u09cb \u0985\u09a8\u09c7\u0995 \u09ae\u09c7\u09a5\u09a1 \u0996\u09c1\u099c\u09c7 \u09aa\u09be\u09ac\u09c7\u09a8 :<\/p>\n<table>\n<tbody>\n<tr>\n<td style=\"text-align: center;\" width=\"97\"><strong>\u09aa\u09a6\u09cd\u09a7\u09a4\u09bf<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"390\"><strong>\u09ac\u09b0\u09cd\u09a3\u09a8\u09be<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"97\">parseFloat<\/td>\n<td width=\"390\">\u098f\u0995\u099f\u09bf \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u09aa\u09be\u09b0\u09cd\u09b8 \u0995\u09b0\u09c1\u09a8 \u098f\u09ac\u0982 \u098f\u0995\u099f\u09bf \u09ab\u09cd\u09b2\u09cb\u099f\u09bf\u0982 \u09aa\u09af\u09bc\u09c7\u09a8\u09cd\u099f \u09b8\u0982\u0996\u09cd\u09af\u09be \u09ab\u09c7\u09b0\u09ce \u09aa\u09be\u09a8<\/td>\n<\/tr>\n<tr>\n<td width=\"97\">parseInt<\/td>\n<td width=\"390\">\u098f\u0995\u099f\u09bf \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u09aa\u09be\u09b0\u09cd\u09b8 \u0995\u09b0\u09c1\u09a8 \u098f\u09ac\u0982 \u098f\u0995\u099f\u09bf \u09aa\u09c2\u09b0\u09cd\u09a3\u09b8\u0982\u0996\u09cd\u09af\u09be \u09ab\u09c7\u09b0\u09ce \u09aa\u09be\u09a8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<h2>\u0987\u0989\u09a8\u09be\u09b0\u09c0 + \u0985\u09aa\u09be\u09b0\u09c7\u099f\u09b0<\/h2>\n<p>\u098f\u0995\u099f\u09bf \u09ad\u09c7\u09b0\u09bf\u09df\u09c7\u09ac\u09b2 (\u09aa\u09b0\u09bf\u09ac\u09b0\u09cd\u09a4\u09a8\u09b6\u09c0\u09b2 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0) \u0995\u09c7 \u09b8\u0982\u0996\u09cd\u09af\u09be\u09df \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0\u09c7\u09b0 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7 \u0987\u0989\u09a8\u09be\u09b0\u09c0 + \u0985\u09aa\u09be\u09b0\u09c7\u099f\u09b0 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09be \u09af\u09c7\u09a4\u09c7 \u09aa\u09be\u09b0\u09c7 :<br \/>\n<strong>\u0989\u09a6\u09be\u09b9\u09b0\u09a3<\/strong><\/p>\n<hr \/>\n<pre>\u00a0var y = \"5\";\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ y is a string\r\n var x = + y;\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ x is a number<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>\u09af\u09a6\u09bf variable \u0995\u09c7 \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0\u09bf\u09a4 \u0995\u09b0\u09be \u09a8\u09be \u09af\u09be\u09df \u09a4\u09be\u09b9\u09b2\u09c7 \u098f\u099f\u09bf \u09b8\u0982\u0996\u09cd\u09af\u09be\u0987 \u09a5\u09be\u0995\u09c7 \u09af\u09be\u09b0 \u09ae\u09be\u09a8 \u09b9\u09df NaN (\u09a8\u09ae\u09cd\u09ac\u09b0 \u09a8\u09df):<br \/>\n<strong>\u0989\u09a6\u09be\u09b9\u09b0\u09a3<\/strong><\/p>\n<hr \/>\n<pre>\u00a0var y = \"John\";\u00a0\u00a0 \/\/ y is a string\r\n var x = + y;\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ x is a number (NaN)<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<h2>Booleans \u0995\u09c7 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0 \u098f \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0<\/h2>\n<p><span id=\"result_box\" class=\"short_text\" lang=\"bn\"><span class=\"hps\">\u0997\u09cd\u09b2\u09cb\u09ac\u09be\u09b2<\/span> <span class=\"hps\">\u09aa\u09a6\u09cd\u09a7\u09a4\u09bf<\/span><\/span> <strong>Number()<\/strong> \u09a6\u09bf\u09df\u09c7 Booleans \u0995\u09c7 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0\u09c7 \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0 \u0995\u09b0\u09a4\u09c7 \u09aa\u09be\u09b0\u09c7\u09a8 :<\/p>\n<hr \/>\n<pre>Number(false)\u00a0\u00a0\u00a0\u00a0 \/\/ returns 0\r\nNumber(true)\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ returns 1<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<h2>\u09a4\u09be\u09b0\u09bf\u0996 \u0995\u09c7 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0\u09c7 \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0<\/h2>\n<p><span id=\"result_box\" class=\"short_text\" lang=\"bn\"><span class=\"hps\">\u0997\u09cd\u09b2\u09cb\u09ac\u09be\u09b2<\/span> <span class=\"hps\">\u09aa\u09a6\u09cd\u09a7\u09a4\u09bf<\/span><\/span>\u00a0<strong>Number()<\/strong> \u09a6\u09bf\u09df\u09c7 \u09a4\u09be\u09b0\u09bf\u0996\u0995\u09c7 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0\u09c7 \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0 \u0995\u09b0\u09a4\u09c7 \u09aa\u09be\u09b0\u09c7\u09a8 :<\/p>\n<hr \/>\n<pre>d = new Date();\r\nNumber(d)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ returns 1404568027739<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>\u09a4\u09be\u09b0\u09bf\u0996\u09c7\u09b0 \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf\u00a0<strong>toString()<\/strong> \u0993 \u098f\u0995\u0987 \u09a7\u09b0\u09a8\u09c7\u09b0 \u0995\u09be\u099c \u0995\u09b0\u09c7 \u0964<\/p>\n<hr \/>\n<pre>d = new Date();\r\nd.getTime()\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ returns 1404568027739<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<h2>\u09b8\u09cd\u09ac\u09af\u09bc\u0982\u0995\u09cd\u09b0\u09bf\u09af\u09bc \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0<\/h2>\n<p>\u09af\u0996\u09a8 \u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u098f\u0995\u099f\u09bf &#8220;\u09ad\u09c1\u09b2&#8221; \u09a1\u09be\u099f\u09be \u099f\u09be\u0987\u09aa \u09a8\u09bf\u09df\u09c7 \u0995\u09be\u099c \u0995\u09b0\u09be\u09b0 \u099a\u09c7\u09b7\u09cd\u099f\u09be \u0995\u09b0\u09c7, \u098f\u099f\u09bf \u09ae\u09be\u09a8\u0995\u09c7 &#8220;\u09b8\u09a0\u09bf\u0995&#8221; \u09a1\u09be\u099f\u09be \u099f\u09be\u0987\u09aa\u09c7 \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0 \u0995\u09b0\u09a4\u09c7 \u099a\u09c7\u09b7\u09cd\u099f\u09be \u0995\u09b0\u09c7\u0964<br \/>\n\u09ab\u09b2\u09be\u09ab\u09b2 \u09b8\u09ac\u09b8\u09ae\u09df \u0986\u09aa\u09a8\u09be\u09b0 \u0986\u09b6\u09be\u09a8\u09b0\u09c2\u09aa \u09b9\u09df \u09a8\u09be:<\/p>\n<hr \/>\n<pre>5 + null\u00a0\u00a0\u00a0 \/\/ returns 5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 because null is converted to 0\r\n\"5\" + null\u00a0 \/\/ returns \"5null\"\u00a0\u00a0 because null is converted to \"null\"\r\n\"5\" + 2\u00a0\u00a0\u00a0\u00a0 \/\/ returns 52\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 because 2 is converted to \"2\"\r\n\"5\" - 2\u00a0\u00a0\u00a0\u00a0 \/\/ returns 3\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 because \"5\" is converted to 5\r\n\"5\" * \"2\"\u00a0\u00a0 \/\/ returns 10\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 because \"5\" and \"2\" are converted to 5 and 2<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<h2>\u09b8\u09cd\u09ac\u09af\u09bc\u0982\u0995\u09cd\u09b0\u09bf\u09af\u09bc \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0<\/h2>\n<p>\u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u09b8\u09cd\u09ac\u09af\u09bc\u0982\u0995\u09cd\u09b0\u09bf\u09af\u09bc\u09ad\u09be\u09ac\u09c7\u0987 \u09ad\u09c7\u09b0\u09bf\u09df\u09c7\u09ac\u09b2 \u098f\u09b0 toString \u09ab\u09be\u0982\u09b6\u09a8\u0995\u09c7 \u0995\u09b2 \u0995\u09b0\u09c7 \u09af\u0996\u09a8 \u0985\u09ac\u099c\u09c7\u0995\u09cd\u099f \u09ac\u09be \u09ad\u09c7\u09b0\u09bf\u09df\u09c7\u09ac\u09b2 \u09a5\u09c7\u0995\u09c7 &#8220;output&#8221; \u0986\u09b6\u09be \u0995\u09b0\u09c7\u09a8 :<\/p>\n<hr \/>\n<pre>document.getElementById(\"demo\").innerHTML = myVar;\r\n\r\n\/\/ if myVar = {name:\"Fjohn\"}\u00a0 \/\/ toString converts to \"[object Object]\"\r\n\/\/ if myVar = [1,2,3,4]\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ toString converts to \"1,2,3,4\"\r\n\/\/ if myVar = new Date()\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ toString converts to \"Fri Jul 18 2014 09:08:55 \r\n                                 GMT+0200\"<\/pre>\n<hr \/>\n<p>&nbsp;<\/p>\n<p>\u09b8\u0982\u0996\u09cd\u09af\u09be \u098f\u09ac\u0982 Booleans \u0993 \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0\u09bf\u09a4 \u09b9\u09af\u09bc, \u0995\u09bf\u09a8\u09cd\u09a4\u09c1 \u098f\u09ac\u09bf \u0996\u09c1\u09ac \u098f\u0995\u099f\u09be \u09a6\u09c3\u09b6\u09cd\u09af\u09ae\u09be\u09a8 \u09a8\u09af\u09bc:<\/p>\n<hr \/>\n<pre>\/\/ if myVar = 123\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ toString converts to \"123\"\r\n\/\/ if myVar = true\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ toString converts to \"true\"\r\n\/\/ if myVar = false\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ toString converts to \"false\"<\/pre>\n<hr \/>\n<pre>\u00a0\r\n\r\n<\/pre>\n<h2><span id=\"result_box\" class=\"short_text\" lang=\"bn\"><span class=\"hps\">\u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f<\/span> <span class=\"hps alt-edited\">\u099f\u09be\u0987\u09aa \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0<\/span> <span class=\"hps\">\u099b\u0995<\/span><\/span><\/h2>\n<p>\u098f\u0987 \u099f\u09c7\u09ac\u09bf\u09b2 \u09ac\u09bf\u09ad\u09bf\u09a8\u09cd\u09a8 \u09aa\u09cd\u09b0\u0995\u09be\u09b0 \u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u09ae\u09be\u09a8\u0995\u09c7 \u09b8\u0982\u0996\u09cd\u09af\u09be, \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982, \u098f\u09ac\u0982 \u09ac\u09c1\u09b2\u09bf\u09df\u09be\u09a8 \u098f \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0 \u09aa\u09cd\u09b0\u09a6\u09b0\u09cd\u09b6\u09a8 \u0995\u09b0\u09c7 :<\/p>\n<table width=\"552\">\n<tbody>\n<tr>\n<td style=\"text-align: center;\"><strong><span id=\"result_box\" class=\"short_text\" lang=\"bn\"><span class=\"hps alt-edited\">\u0986\u09a6\u09bf \u09ae\u09be\u09a8<\/span><\/span><\/strong><\/td>\n<td style=\"text-align: center;\"><strong><span id=\"result_box\" class=\"short_text\" lang=\"bn\"><span class=\"hps\">\u09b8\u0982\u0996\u09cd\u09af\u09be\u09af\u09bc \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0\u09bf\u09a4<\/span><\/span><\/strong><\/td>\n<td><strong><span id=\"result_box\" class=\"short_text\" lang=\"bn\"><span class=\"hps alt-edited\">\u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u098f \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0\u09bf\u09a4<\/span><\/span><\/strong><\/td>\n<td style=\"text-align: center;\"><strong><span id=\"result_box\" class=\"short_text\" lang=\"bn\"><span class=\"hps alt-edited\">\u09ac\u09c1\u09b2\u09bf\u09af\u09bc\u09be\u09a8\u09c7 \u09b0\u09c2\u09aa\u09be\u09a8\u09cd\u09a4\u09b0\u09bf\u09a4<\/span><\/span><\/strong><\/td>\n<\/tr>\n<tr>\n<td>false<\/td>\n<td>0<\/td>\n<td>&#8220;false&#8221;<\/td>\n<td>false<\/td>\n<\/tr>\n<tr>\n<td>true<\/td>\n<td>1<\/td>\n<td>&#8220;true&#8221;<\/td>\n<td>true<\/td>\n<\/tr>\n<tr>\n<td>0<\/td>\n<td>0<\/td>\n<td>&#8220;0&#8221;<\/td>\n<td>false<\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>1<\/td>\n<td>&#8220;1&#8221;<\/td>\n<td>true<\/td>\n<\/tr>\n<tr>\n<td>&#8220;0&#8221;<\/td>\n<td>0<\/td>\n<td>&#8220;0&#8221;<\/td>\n<td>true<\/td>\n<\/tr>\n<tr>\n<td>&#8220;1&#8221;<\/td>\n<td>1<\/td>\n<td>&#8220;1&#8221;<\/td>\n<td>true<\/td>\n<\/tr>\n<tr>\n<td>NaN<\/td>\n<td>NaN<\/td>\n<td>&#8220;NaN&#8221;<\/td>\n<td>false<\/td>\n<\/tr>\n<tr>\n<td>Infinity<\/td>\n<td>Infinity<\/td>\n<td>&#8220;Infinity&#8221;<\/td>\n<td>true<\/td>\n<\/tr>\n<tr>\n<td>-Infinity<\/td>\n<td>-Infinity<\/td>\n<td>&#8220;-Infinity&#8221;<\/td>\n<td>true<\/td>\n<\/tr>\n<tr>\n<td>&#8220;&#8221;<\/td>\n<td><strong>0<\/strong><\/td>\n<td>&#8220;&#8221;<\/td>\n<td><strong>false<\/strong><\/td>\n<\/tr>\n<tr>\n<td>&#8220;20&#8221;<\/td>\n<td>20<\/td>\n<td>&#8220;20&#8221;<\/td>\n<td>true<\/td>\n<\/tr>\n<tr>\n<td>&#8220;twenty&#8221;<\/td>\n<td>NaN<\/td>\n<td>&#8220;twenty&#8221;<\/td>\n<td>true<\/td>\n<\/tr>\n<tr>\n<td>[ ]<\/td>\n<td><strong>0<\/strong><\/td>\n<td>&#8220;&#8221;<\/td>\n<td>true<\/td>\n<\/tr>\n<tr>\n<td>[20]<\/td>\n<td><strong>20<\/strong><\/td>\n<td>&#8220;20&#8221;<\/td>\n<td>true<\/td>\n<\/tr>\n<tr>\n<td>[10,20]<\/td>\n<td>NaN<\/td>\n<td>&#8220;10,20&#8221;<\/td>\n<td>true<\/td>\n<\/tr>\n<tr>\n<td>[&#8220;twenty&#8221;]<\/td>\n<td>NaN<\/td>\n<td>&#8220;twenty&#8221;<\/td>\n<td>true<\/td>\n<\/tr>\n<tr>\n<td>[&#8220;ten&#8221;,&#8221;twenty&#8221;]<\/td>\n<td>NaN<\/td>\n<td>&#8220;ten,twenty&#8221;<\/td>\n<td>true<\/td>\n<\/tr>\n<tr>\n<td>function(){}<\/td>\n<td>NaN<\/td>\n<td>&#8220;function(){}&#8221;<\/td>\n<td>true<\/td>\n<\/tr>\n<tr>\n<td>{ }<\/td>\n<td>NaN<\/td>\n<td>&#8220;[object Object]&#8221;<\/td>\n<td>true<\/td>\n<\/tr>\n<tr>\n<td>null<\/td>\n<td><strong>0<\/strong><\/td>\n<td>&#8220;null&#8221;<\/td>\n<td>false<\/td>\n<\/tr>\n<tr>\n<td>undefined<\/td>\n<td>NaN<\/td>\n<td>&#8220;undefined&#8221;<\/td>\n<td>false<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>\u09a8\u09cb\u099f:<\/strong> \u0995\u09cb\u099f\u09c7\u09b6\u09a8 \u09af\u09c1\u0995\u09cd\u09a4 \u09ae\u09be\u09a8 \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u09a8\u09bf\u09b0\u09cd\u09a6\u09c7\u09b6 \u0995\u09b0\u09c7\u0964<\/p>\n<p>\u09ac\u09cb\u09b2\u09cd\u09a1 \u0995\u09b0\u09be \u09ae\u09be\u09a8 (\u0995\u09bf\u099b\u09c1) \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae\u09be\u09b0 \u09b8\u09ae\u09b0\u09cd\u09a5\u09a8 \u0995\u09b0\u09c7 \u09a8\u09be\u0964<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0986\u09a6\u09a8\u09be\u09a8 \u09a8\u09be\u09b9\u09bf\u09a6 \u09b8\u09b0\u0995\u09be\u09b0\u09bf \u09a4\u09bf\u09a4\u09c1\u09ae\u09c0\u09b0 \u0995\u09b2\u09c7\u099c &nbsp; \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0 \u09a5\u09c7\u0995\u09c7 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0\u09c7 \u09aa\u09b0\u09bf\u09ac\u09b0\u09cd\u09a4\u09a8, \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u09a5\u09c7\u0995\u09c7 \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u098f \u09aa\u09b0\u09bf\u09ac\u09b0\u09cd\u09a4\u09a8, \u09ac\u09c1\u09b2\u09bf\u09af\u09bc\u09be\u09a8 \u09a5\u09c7\u0995\u09c7 \u09ac\u09c1\u09b2\u09bf\u09df\u09be\u09a8\u09c7 \u09aa\u09b0\u09bf\u09ac\u09b0\u09cd\u09a4\u09a8 \u0995\u09b0\u09be \u09af\u09be\u09df \u0964 \u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u09a1\u09c7\u099f\u09be \u09aa\u09cd\u09b0\u0995\u09be\u09b0\u09ad\u09c7\u09a6 \u09ae\u09be\u09a8 \u09a7\u09be\u09b0\u09a3 \u0995\u09b0\u09a4\u09c7 \u09aa\u09be\u09b0\u09c7 \u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f\u09c7 \u098f\u09ae\u09a8 5 \u09a7\u09b0\u09a8\u09c7\u09b0 \u09a1\u09be\u099f\u09be \u099f\u09be\u0987\u09aa \u0986\u099b\u09c7: \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0 \u09ac\u09c1\u09b2\u09bf\u09af\u09bc\u09be\u09a8 \u0985\u09ac\u099c\u09c7\u0995\u09cd\u099f \u09ab\u09be\u0982\u09b6\u09a8 \u0985\u09ac\u099c\u09c7\u0995\u09cd\u099f \u09e9 \u09a7\u09b0\u09a8\u09c7\u09b0 \u09b9\u09af\u09bc: \u0985\u09ac\u099c\u09c7\u0995\u09cd\u099f \u09a4\u09be\u09b0\u09bf\u0996 \u0985\u09cd\u09af\u09be\u09b0\u09c7 \u09ac\u09be \u09b6\u09cd\u09b0\u09c7\u09a3\u09c0\u09ac\u09bf\u09a8\u09cd\u09af\u09be\u09b8 \u098f\u09ac\u0982 \u09e8 \u09a7\u09b0\u09a8\u09c7\u09b0 \u09a1\u09be\u099f\u09be \u099f\u09be\u0987\u09aa\u09c7\u09b0 &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"http:\/\/bangla.sitestree.com\/?p=7134\">Continue reading<\/a><\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[65],"tags":[7,969,750,738,1660,753,600,1325,779],"class_list":["post-7134","post","type-post","status-publish","format-standard","hentry","category-javascript-complete-courses","tag-javascript","tag-type","tag-750","tag-738","tag-1660","tag-753","tag-600","tag-1325","tag-779","item-wrap"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":7103,"url":"http:\/\/bangla.sitestree.com\/?p=7103","url_meta":{"origin":7134,"position":0},"title":"\u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0 (JavaScript Numbers)","author":"Author-Check- Article-or-Video","date":"March 1, 2015","format":false,"excerpt":"\u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0 (JavaScript Numbers) \u09a8\u09df\u09a8 \u099a\u09a8\u09cd\u09a6\u09cd\u09b0 \u09a6\u09a4\u09cd\u09a4 \u00a0 \u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u098f\u09b0 \u09b6\u09c1\u09a7\u09c1\u09ae\u09be\u09a4\u09cd\u09b0 \u098f\u0995 \u09a7\u09b0\u09a8\u09c7\u09b0 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0 \u0986\u099b\u09c7\u0964 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0 \u09a6\u09b6\u09ae\u09bf\u0995 \u09a6\u09bf\u09df\u09c7 \u09ac\u09be \u09a8\u09be \u09a6\u09bf\u09df\u09c7\u0993 \u09b2\u09c7\u0996\u09be \u09af\u09be\u09df\u0964 \u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0 \u09a6\u09b6\u09ae\u09bf\u0995 \u09a6\u09bf\u09df\u09c7 \u09ac\u09be \u09a8\u09be \u09a6\u09bf\u09df\u09c7\u0993 \u09b2\u09c7\u0996\u09be \u09af\u09be\u09df\u0983 \u0989\u09a6\u09be\u09b9\u09b0\u09a3 var x = 34.00;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ A number with decimals var y = 34;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ A number\u2026","rel":"","context":"In &quot;JavaScript&quot;","block_context":{"text":"JavaScript","link":"http:\/\/bangla.sitestree.com\/?cat=65"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":7862,"url":"http:\/\/bangla.sitestree.com\/?p=7862","url_meta":{"origin":7134,"position":1},"title":"\u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u09a1\u09c7\u099f\u09be \u099f\u09be\u0987\u09aa (JavaScript Data Types)","author":"Sayed","date":"March 28, 2015","format":false,"excerpt":"\u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u09a1\u09c7\u099f\u09be \u099f\u09be\u0987\u09aa (JavaScript Data Types) \u09b2\u09bf\u0996\u09c7\u099b\u09c7\u09a8\u0983 \u09ae\u09cb\u09b9\u09be\u09ae\u09cd\u09ae\u09be\u09a6 \u0986\u09ae\u09bf\u09b0\u09c1\u09b2 \u0987\u09b8\u09b2\u09be\u09ae (\u0986\u09b0\u09bf\u09ab) \u0993\u09df\u09c7\u09ac \u09a1\u09bf\u099c\u09be\u0987\u09a8\u09be\u09b0 \u0985\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u09a1\u09c7\u09ad\u09c7\u09b2\u09aa\u09be\u09b0 \u00a0 \u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u09a1\u09c7\u099f\u09be \u099f\u09be\u0987\u09aa\u09c7\u09b0 \u09a7\u09be\u09b0\u09a8\u09be \u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f\u09c7 \u09a1\u09c7\u099f\u09be \u099f\u09be\u0987\u09aa \u098f\u0995\u099f\u09bf \u0997\u09c1\u09b0\u09c1\u09a4\u09cd\u09ac\u09aa\u09c2\u09b0\u09cd\u09a3 \u09ac\u09bf\u09b7\u09df\u0964 \u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u098f\u09b0 \u09a1\u09c7\u099f\u09be \u099f\u09be\u0987\u09aa \u0997\u09c1\u09b2\u09cb \u09b9\u09b2\u0983 (String, Number, Boolean, Array, Object.) \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982, \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0, \u09ac\u09c1\u09b2\u09bf\u09af\u09bc\u09be\u09a8, \u0985\u09cd\u09af\u09be\u09b0\u09c7, \u0985\u09ac\u099c\u09c7\u0995\u09cd\u099f \u0964 \u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae\u09bf\u0982 \u0995\u09b0\u09a4\u09c7 \u098f\u0987 \u099f\u09be\u0987\u09aa\u0997\u09c1\u09b2\u09cb \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09be\u2026","rel":"","context":"In &quot;JavaScript&quot;","block_context":{"text":"JavaScript","link":"http:\/\/bangla.sitestree.com\/?cat=65"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":6002,"url":"http:\/\/bangla.sitestree.com\/?p=6002","url_meta":{"origin":7134,"position":2},"title":"\u09aa\u09bf\u098f\u0987\u099a\u09aa\u09bf \u09eb \u09a1\u09be\u099f\u09be \u099f\u09be\u0987\u09aa (PHP 5 Data Types)","author":"Author-Check- Article-or-Video","date":"February 4, 2015","format":false,"excerpt":"\u0986\u0995\u09cd\u09a4\u09be\u09b0\u09c1\u099c\u09cd\u099c\u09be\u09ae\u09be\u09a8 Department of CSE, University of Chittagong \u09ad\u09c7\u09b0\u09bf\u09df\u09c7\u09ac\u09b2 \u09ac\u09bf\u09ad\u09a8\u09cd\u09a8 \u09b0\u0995\u09ae\u09c7\u09b0 \u09a1\u09be\u099f\u09be \u09b8\u09cd\u099f\u09cb\u09b0 \u0995\u09b0\u09a4\u09c7 \u09aa\u09be\u09b0\u09c7, \u098f\u09ac\u0982 \u09ac\u09bf\u09ad\u09a8\u09cd\u09a8 \u09a1\u09be\u099f\u09be \u099f\u09be\u0987\u09aa \u09ac\u09bf\u09ad\u09a8\u09cd\u09a8 \u09b0\u0995\u09ae \u0995\u09be\u099c \u0995\u09b0\u09c7\u0964 \u09aa\u09bf\u098f\u0987\u099a\u09aa\u09bf \u09a8\u09bf\u099a\u09c7 \u0989\u09b2\u09cd\u09b2\u09c7\u0996\u09bf\u09a4 \u09a1\u09be\u099f\u09be \u099f\u09be\u0987\u09aa \u0997\u09c1\u09b2\u09cb \u09b8\u09be\u09aa\u09cb\u09b0\u09cd\u099f \u0995\u09b0\u09c7\u0964 \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 (String): \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u09a4\u09c8\u09b0\u09bf \u09b9\u09df \u098f\u0995 \u09ac\u09be \u098f\u0995\u09be\u09a7\u09bf\u0995 \u0995\u09cd\u09af\u09be\u09b0\u09c7\u0995\u09cd\u099f\u09be\u09b0 \u09ae\u09bf\u09b2\u09c7 \u0964 \u09b8\u09cb\u099c\u09be \u0995\u09a5\u09be\u09df \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u09b9\u099a\u09cd\u099b\u09c7 \u0995\u09cd\u09af\u09be\u09b0\u09c7\u0995\u09cd\u099f\u09be\u09b0\u09c7\u09b0 \u09b8\u09ae\u09b7\u09cd\u099f\u09bf \u0964 \u09af\u09c7\u09ae\u09a8\u0983 \u201cHello\u2026","rel":"","context":"In &quot;\u09aa\u09bf \u098f\u0987\u099a \u09aa\u09bf \u099f\u09bf\u0989\u099f\u09cb\u09b0\u09bf\u09df\u09be\u09b2 \u0964 PHP tutorial&quot;","block_context":{"text":"\u09aa\u09bf \u098f\u0987\u099a \u09aa\u09bf \u099f\u09bf\u0989\u099f\u09cb\u09b0\u09bf\u09df\u09be\u09b2 \u0964 PHP 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\u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u099f\u09c7\u0995\u09cd\u09b8\u099f (\u09b2\u09c7\u0996\u09be) \u09b8\u0982\u09b0\u0995\u09cd\u09b7\u09a3 \u0993 \u0995\u09be\u099c\u09c7 \u09b2\u09be\u0997\u09be\u09a8\u09cb\u09b0 \u099c\u09a8\u09cd\u09af \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09be \u09b9\u09df\u0964 \u099c\u09be\u09ad\u09be\u09b8\u09cd\u0995\u09cd\u09b0\u09bf\u09aa\u09cd\u099f \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u09b8\u09be\u09a7\u09be\u09b0\u09a3\u09ad\u09be\u09ac\u09c7 \u098f\u0995\u0997\u09c1\u099a\u09cd\u099b \u09ac\u09b0\u09cd\u09a3\u0995\u09c7 \u09aa\u09b0\u09ac\u09b0\u09cd\u09a4\u09c0\u09a4\u09c7 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0\u09c7\u09b0 \u099c\u09a8\u09cd\u09af \u09b8\u0982\u09b0\u0995\u09cd\u09b7\u09a3 \u0995\u09b0\u09c7\u0964 \u09af\u09c7\u09ae\u09a8: \"John Doe\" \u09b8\u09cd\u099f\u09cd\u09b0\u09bf\u0982 \u0995\u09cb\u099f\u09c7\u09b6\u09a8\u09b0 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