{"id":588,"date":"2024-01-19T11:33:03","date_gmt":"2024-01-19T17:33:03","guid":{"rendered":"https:\/\/frontendmasters.com\/blog\/?p=588"},"modified":"2024-01-19T11:33:03","modified_gmt":"2024-01-19T17:33:03","slug":"progressively-enhanced-form-validation","status":"publish","type":"post","link":"https:\/\/frontendmasters.com\/blog\/progressively-enhanced-form-validation\/","title":{"rendered":"Progressively Enhanced Form Validation"},"content":{"rendered":"\n

Here’s a thing you’re sure to do in your web developer career: add form validation to a form. You can’t leave that name field blank! That doesn’t look like an email address! That quantity is too high! Forms are a part of the beating heart of the web, and especially important to business<\/em>. You can’t charge a credit card with an invalid card number, and you can’t let someone order 5 rice cookers if you only have 4 in stock. <\/p>\n\n\n\n

These days, the approach to form validation should be:<\/p>\n\n\n\n

    \n
  1. Start with semantic, valid, accessible HTML. You can do some level of validation on forms right in HTML. <\/li>\n\n\n\n
  2. Layer on CSS, adjusting the styles for form elements in different states of validity. <\/li>\n\n\n\n
  3. Layer on JavaScript, filling in gaps that HTML can’t do and making things more<\/em> accessible.<\/li>\n<\/ol>\n\n\n\n

    It’s a lot! But it’s worth doing right. Fortunately, Gerardo Rodriguez’s 4-part series<\/a> and demo<\/a>\/repo<\/a> is a very good reference. You might want to test those forms<\/a>, too. <\/p>\n","protected":false},"excerpt":{"rendered":"

    Here’s a thing you’re sure to do in your web developer career: add form validation to a form. You can’t leave that name field blank! That doesn’t look like an email address! That quantity is too high! Forms are a part of the beating heart of the web, and especially important to business. You can’t […]<\/p>\n","protected":false},"author":1,"featured_media":590,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"sig_custom_text":"","sig_image_type":"featured-image","sig_custom_image":0,"sig_is_disabled":false,"inline_featured_image":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[29],"tags":[7,82,31,3],"class_list":["post-588","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-the-beat","tag-css","tag-form-validation","tag-html","tag-javascript"],"acf":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/frontendmasters.com\/blog\/wp-content\/uploads\/2024\/01\/validation-thumb.jpg?fit=1000%2C500&ssl=1","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/posts\/588","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/comments?post=588"}],"version-history":[{"count":2,"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/posts\/588\/revisions"}],"predecessor-version":[{"id":591,"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/posts\/588\/revisions\/591"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/media\/590"}],"wp:attachment":[{"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/media?parent=588"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/categories?post=588"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/tags?post=588"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}