The following script will take the input from the form and validate a post code in UK Format eg. Lettter Letter Number Number Letter Letter<\/p>\n
\r\n<!DOCTYPE html>\r\n<html>\r\n<head>\r\n <title>UK Postcode Validation<\/title>\r\n <script type=\"text\/javascript\">\r\n function isValidUKPostcode(postcode) {\r\n var postcodePattern = \/^([Gg][Ii][Rr] 0[Aa]{2})|((([A-Za-z][0-9]{1,2})|(([A-Za-z][A-Ha-hJ-Yj-y][0-9]{1,2})|(([A-Za-z][0-9][A-Za-z])|([A-Za-z][A-Ha-hJ-Yj-y][0-9]?[A-Za-z]?))))\\s?[0-9][A-Za-z]{2})$\/;\r\n return postcodePattern.test(postcode);\r\n }\r\n\r\n function validateForm() {\r\n var postcodeInput = document.getElementById(\"postcode\").value;\r\n var errorDiv = document.getElementById(\"error-message\");\r\n\r\n if (!isValidUKPostcode(postcodeInput)) {\r\n errorDiv.innerText = \"Please enter a valid UK postcode.\";\r\n return false;\r\n }\r\n\r\n errorDiv.innerText = \"\"; \/\/ Clear any previous error message\r\n return true;\r\n }\r\n <\/script>\r\n <style>\r\n .error {\r\n color: red;\r\n margin-top: 5px;\r\n }\r\n <\/style>\r\n<\/head>\r\n<body>\r\n <form action=\"process_form.php\" method=\"POST\" onsubmit=\"return validateForm()\">\r\n <label for=\"postcode\">Enter UK Postcode:<\/label>\r\n <input type=\"text\" id=\"postcode\" name=\"postcode\" required>\r\n <div id=\"error-message\" class=\"error\"><\/div>\r\n <input type=\"submit\" value=\"Submit\">\r\n <\/form>\r\n<\/body>\r\n<\/html>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"The following script will take the input from the form and validate a post code in UK Format eg. Lettter Letter Number Number Letter Letter […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,46],"tags":[48,47,15,49],"class_list":["post-224","post","type-post","status-publish","format-standard","hentry","category-html","category-javascript","tag-data","tag-html","tag-javascript","tag-validation"],"_links":{"self":[{"href":"https:\/\/www.kwwd.co.uk\/blog\/wp-json\/wp\/v2\/posts\/224","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kwwd.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kwwd.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kwwd.co.uk\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kwwd.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=224"}],"version-history":[{"count":0,"href":"https:\/\/www.kwwd.co.uk\/blog\/wp-json\/wp\/v2\/posts\/224\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.kwwd.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=224"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kwwd.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=224"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kwwd.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=224"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}