{"id":2026,"date":"2024-05-02T17:37:41","date_gmt":"2024-05-02T23:37:41","guid":{"rendered":"https:\/\/frontendmasters.com\/blog\/?p=2026"},"modified":"2024-05-02T17:37:42","modified_gmt":"2024-05-02T23:37:42","slug":"html-attributes-vs-dom-properties","status":"publish","type":"post","link":"https:\/\/frontendmasters.com\/blog\/html-attributes-vs-dom-properties\/","title":{"rendered":"HTML attributes vs DOM properties"},"content":{"rendered":"\n<p>Speaking of Jake, his recent article <a href=\"https:\/\/jakearchibald.com\/2024\/attributes-vs-properties\/\">HTML attributes vs DOM properties<\/a> is a good one for all y&#8217;all on that journey to senior developer. I could imagine asking this in an interview. I&#8217;d say you should straight up know this is the case and learn over time the more nuanced stuff like which properties <em>reflect<\/em> into attributes and such.<\/p>\n\n\n\n<!--more-->\n\n\n\n<p>His first block of code outlines how confusing it can be at first:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"HTML, XML\" data-shcb-language-slug=\"xml\"><span><code class=\"hljs language-xml\"><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">div<\/span> <span class=\"hljs-attr\">foo<\/span>=<span class=\"hljs-string\">\"bar\"<\/span>&gt;<\/span>\u2026<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">div<\/span>&gt;<\/span>\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">script<\/span>&gt;<\/span><span class=\"javascript\">\n  <span class=\"hljs-keyword\">const<\/span> div = <span class=\"hljs-built_in\">document<\/span>.querySelector(<span class=\"hljs-string\">'div&#91;foo=bar]'<\/span>);\n\n  <span class=\"hljs-built_in\">console<\/span>.log(div.getAttribute(<span class=\"hljs-string\">'foo'<\/span>)); <span class=\"hljs-comment\">\/\/ 'bar'<\/span>\n  <span class=\"hljs-built_in\">console<\/span>.log(div.foo); <span class=\"hljs-comment\">\/\/ undefined<\/span>\n\n  div.foo = <span class=\"hljs-string\">'hello world'<\/span>;\n\n  <span class=\"hljs-built_in\">console<\/span>.log(div.getAttribute(<span class=\"hljs-string\">'foo'<\/span>)); <span class=\"hljs-comment\">\/\/ 'bar'<\/span>\n  <span class=\"hljs-built_in\">console<\/span>.log(div.foo); <span class=\"hljs-comment\">\/\/ 'hello world'<\/span>\n<\/span><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">script<\/span>&gt;<\/span><\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">HTML, XML<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">xml<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>And this is all exacerbated by languages like JSX where it looks like you&#8217;re writing HTML but really you&#8217;re setting properties and the framework may or may not turn them into HTML attributes.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Speaking of Jake, his recent article HTML attributes vs DOM properties is a good one for all y&#8217;all on that journey to senior developer. I could imagine asking this in an interview. I&#8217;d say you should straight up know this is the case and learn over time the more nuanced stuff like which properties reflect [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2033,"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":[3],"class_list":["post-2026","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-the-beat","tag-javascript"],"acf":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/frontendmasters.com\/blog\/wp-content\/uploads\/2024\/05\/property-vs-attribute.jpg?fit=1000%2C500&ssl=1","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/posts\/2026","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=2026"}],"version-history":[{"count":2,"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/posts\/2026\/revisions"}],"predecessor-version":[{"id":2034,"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/posts\/2026\/revisions\/2034"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/media\/2033"}],"wp:attachment":[{"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/media?parent=2026"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/categories?post=2026"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/frontendmasters.com\/blog\/wp-json\/wp\/v2\/tags?post=2026"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}