{"id":10560,"date":"2015-08-29T10:16:17","date_gmt":"2015-08-29T14:16:17","guid":{"rendered":"http:\/\/bangla.salearningschool.com\/?p=10560"},"modified":"2015-08-24T10:38:35","modified_gmt":"2015-08-24T14:38:35","slug":"javascript-form-validation-validate-a-form-collecting-credit-card-information","status":"publish","type":"post","link":"http:\/\/bangla.sitestree.com\/?p=10560","title":{"rendered":"JavaScript Form Validation: Validate a Form Collecting Credit Card Information"},"content":{"rendered":"<pre>\r\n\u00a0\u00a0 \u00a0function validateCollectPaymentInformationForm()\r\n\u00a0\u00a0 \u00a0{\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0var method, name, number, expiry, errMsg\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0errMsg = \"\";\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0method = document.getElementById('paymentMethod');\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0name =\u00a0\u00a0 document.getElementById('txtCCName');\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0number = document.getElementById('txtCCNumber');\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0if (method.value == \"\" || method.value == \"0\" || method.value == null){\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0errMsg = \"Please select a payment method \\n\";\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0}\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0if (name.value == \"\" || name.value == null){\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0errMsg = errMsg + 'Please write down your name\u00a0 \\n';\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0}\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0if (number.value == \"\" || number.value == null){\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0errMsg = errMsg + 'Please provide credit card number\u00a0 \\n';\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0}else if (number.value.length &lt; 16 ){\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0errMsg = errMsg + 'Invalid credit card number\u00a0 \\n';\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0}\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0if (errMsg.length &gt; 0 ){\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0alert(errMsg);\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0method.focus();\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0return false;\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0}else{\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0return true;\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0}\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0return false;\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0}\r\n\r\n\r\n\u00a0\u00a0 \u00a0function validateCollectPaymentInformationForm()\r\n\u00a0\u00a0 \u00a0{\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0var method, name, number, expiry, errMsg\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0method = document.getElementById('paymentMethod');\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0name =\u00a0\u00a0 document.getElementById('txtCCName');\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0number = document.getElementById('txtCCNumber');\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0if (method.value == \"\" || method.value == \"0\" || method.value == null){\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0alert('Please select a payment method');\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0method.focus();\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0return false;\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0}\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0if (name.value == \"\" || name.value == null){\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0alert('Please write down your name');\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0name.focus();\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0return false;\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0}\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0if (number.value == \"\" || number.value == null){\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0alert('Please provide credit card number');\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0number.focus();\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0return false;\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0}else if (number.value.length &lt; 16 ){\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0alert('Invalid card number');\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0number.focus();\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0return false;\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0}\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0return true;\r\n\u00a0\u00a0 \u00a0}<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0\u00a0 \u00a0function validateCollectPaymentInformationForm() \u00a0\u00a0 \u00a0{ \u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0var method, name, number, expiry, errMsg \u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0errMsg = &#8220;&#8221;; \u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0method = document.getElementById(&#8216;paymentMethod&#8217;); \u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0name =\u00a0\u00a0 document.getElementById(&#8216;txtCCName&#8217;); \u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0number = document.getElementById(&#8216;txtCCNumber&#8217;); \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0if (method.value == &#8220;&#8221; || method.value == &#8220;0&#8221; || method.value == null){ &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"http:\/\/bangla.sitestree.com\/?p=10560\">Continue reading<\/a><\/p>\n","protected":false},"author":130,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1417,1425],"tags":[706,7,1469],"class_list":["post-10560","post","type-post","status-publish","format-standard","hentry","category-code-programming-samples--","category-javascript","tag-code","tag-javascript","tag-1469","item-wrap"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":26493,"url":"http:\/\/bangla.sitestree.com\/?p=26493","url_meta":{"origin":10560,"position":0},"title":"JavaScript Form Validation: Validate a Form Collecting Credit Card Information #Programming Code Examples #Javascript #JavaScript","author":"Author-Check- Article-or-Video","date":"April 26, 2021","format":false,"excerpt":"function validateCollectPaymentInformationForm() { var method, name, number, expiry, errMsg errMsg = \"\"; method = document.getElementById('paymentMethod'); name = document.getElementById('txtCCName'); number = document.getElementById('txtCCNumber'); if (method.value == \"\" || method.value == \"0\" || method.value == null){ errMsg = \"Please select a payment method n\"; } if (name.value == \"\" || name.value == null){\u2026","rel":"","context":"In &quot;FromSitesTree.com&quot;","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":26499,"url":"http:\/\/bangla.sitestree.com\/?p=26499","url_meta":{"origin":10560,"position":1},"title":"JavaScript Code #Programming Code Examples #Javascript #JavaScript","author":"Author-Check- Article-or-Video","date":"April 26, 2021","format":false,"excerpt":"var browser=navigator.appName; var b_version=navigator.appVersion; <a href=\"http:\/\/www.justetc.net\" target=\"_blank\"> <img border=\"0\" alt=\"hello\" src=\"b_pink.gif\" id=\"b1\" width=\"26\" height=\"26\" onmouseover=\"mouseOver()\" onmouseout=\"mouseOut()\" \/> Place the following code under script tag\/in a javascript file function mouseOver() { document.getElementById(\"b1\").src =\"b_blue.gif\"; } function mouseOut() { document.getElementById(\"b1\").src =\"b_pink.gif\"; } <map name=\"planetmap\"> <area shape =\"rect\" coords =\"0,0,82,126\" onMouseOver=\"writeText('You are over the\u2026","rel":"","context":"In &quot;FromSitesTree.com&quot;","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":10564,"url":"http:\/\/bangla.sitestree.com\/?p=10564","url_meta":{"origin":10560,"position":2},"title":"JavaScript Code","author":"","date":"August 29, 2015","format":false,"excerpt":"\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 var browser=navigator.appName; \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 var b_version=navigator.appVersion; <a href=\"http:\/\/www.justetc.net\" target=\"_blank\"> <img border=\"0\" alt=\"hello\" src=\"b_pink.gif\" id=\"b1\" width=\"26\" height=\"26\" onmouseover=\"mouseOver()\" onmouseout=\"mouseOut()\" \/> Place the following code under script tag\/in a javascript file function mouseOver() { \u00a0\u00a0 document.getElementById(\"b1\").src =\"b_blue.gif\"; } function mouseOut() { \u00a0\u00a0 document.getElementById(\"b1\").src =\"b_pink.gif\"; } <map name=\"planetmap\"> <area shape =\"rect\" coords =\"0,0,82,126\"\u2026","rel":"","context":"In &quot;Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8&quot;","block_context":{"text":"Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8","link":"http:\/\/bangla.sitestree.com\/?cat=1417"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":27156,"url":"http:\/\/bangla.sitestree.com\/?p=27156","url_meta":{"origin":10560,"position":3},"title":"Javascript : Miscellaneous Code #Programming Code Examples #Java\/J2EE\/J2ME #Ajax","author":"Author-Check- Article-or-Video","date":"May 12, 2021","format":false,"excerpt":"var browser=navigator.appName; var b_version=navigator.appVersion; <a href=\"http:\/\/www.justetc.net\" target=\"_blank\"> <img border=\"0\" alt=\"hello\" src=\"b_pink.gif\" id=\"b1\" width=\"26\" height=\"26\" onmouseover=\"mouseOver()\" onmouseout=\"mouseOut()\" \/> Place the following code under script tag\/in a javascript file function mouseOver() { document.getElementById(\"b1\").src =\"b_blue.gif\"; } function mouseOut() { document.getElementById(\"b1\").src =\"b_pink.gif\"; } <map name=\"planetmap\"> <area shape =\"rect\" coords =\"0,0,82,126\" onMouseOver=\"writeText('You are over the\u2026","rel":"","context":"In &quot;FromSitesTree.com&quot;","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":10548,"url":"http:\/\/bangla.sitestree.com\/?p=10548","url_meta":{"origin":10560,"position":4},"title":"Javascript : Miscellaneous Code","author":"","date":"August 29, 2015","format":false,"excerpt":"\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 var browser=navigator.appName; \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 var b_version=navigator.appVersion; <a href=\"http:\/\/www.justetc.net\" target=\"_blank\"> <img border=\"0\" alt=\"hello\" src=\"b_pink.gif\" id=\"b1\" width=\"26\" height=\"26\" onmouseover=\"mouseOver()\" onmouseout=\"mouseOut()\" \/> Place the following code under script tag\/in a javascript file function mouseOver() { \u00a0\u00a0 document.getElementById(\"b1\").src =\"b_blue.gif\"; } function mouseOut() { \u00a0\u00a0 document.getElementById(\"b1\").src =\"b_pink.gif\"; } <map name=\"planetmap\"> <area shape =\"rect\" coords =\"0,0,82,126\"\u2026","rel":"","context":"In &quot;Ajax&quot;","block_context":{"text":"Ajax","link":"http:\/\/bangla.sitestree.com\/?cat=1418"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":70147,"url":"http:\/\/bangla.sitestree.com\/?p=70147","url_meta":{"origin":10560,"position":5},"title":"Random Notes on JavaScript\/HTML #13","author":"Author-Check- Article-or-Video","date":"August 27, 2021","format":false,"excerpt":"This short-note will make sense, only if you already have some javascript sense. It can be used - just to refresh memory, once in a while. My JavaScript Experience? started on 2000, conducted a JavaScript Training Session on 2001, wrote a book for a training institute on JavaScript on 2001,\u2026","rel":"","context":"In &quot;FromSitesTree.com&quot;","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/10560","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/users\/130"}],"replies":[{"embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10560"}],"version-history":[{"count":1,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/10560\/revisions"}],"predecessor-version":[{"id":10561,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/10560\/revisions\/10561"}],"wp:attachment":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10560"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10560"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10560"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}