{"id":676,"date":"2024-04-21T19:51:39","date_gmt":"2024-04-21T22:51:39","guid":{"rendered":"https:\/\/thiagorossi.com.br\/blog\/?p=676"},"modified":"2025-11-06T12:11:11","modified_gmt":"2025-11-06T15:11:11","slug":"tag-textarea-html","status":"publish","type":"post","link":"https:\/\/thiagorossi.com.br\/blog\/tag-textarea-html\/","title":{"rendered":"Tag textarea HTML"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Tempo de leitura: <\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutos<\/span><\/span>\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>Tag textarea HTML<\/strong>: Quando a entrada de dados do usu\u00e1rio exige mais do que uma linha simples (como coment\u00e1rios, mensagens longas ou descri\u00e7\u00f5es), a tag <strong><code>&lt;textarea><\/code><\/strong> \u00e9 a ferramenta ideal.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Ao contr\u00e1rio do elemento <code>&lt;input type=\"text\"&gt;<\/code>, que se limita a uma \u00fanica linha, a <code>&lt;textarea&gt;<\/code> oferece um espa\u00e7o redimension\u00e1vel e multi-linha, tornando-a essencial para formul\u00e1rios completos e interativos.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Neste artigo, vamos explorar a tag <code>&lt;textarea&gt;<\/code>, seus atributos de controle e as melhores pr\u00e1ticas para integr\u00e1-la ao seu formul\u00e1rio com foco em usabilidade e acessibilidade.<\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-large-font-size\">1. Estrutura e Atributos de Controle<\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">A tag <code>&lt;textarea&gt;<\/code> possui uma estrutura de abertura e fechamento, e o texto padr\u00e3o (se houver) deve ser colocado <strong>entre<\/strong> as tags.<\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Atributos Essenciais<\/h3>\n\n\n\n<figure class=\"wp-block-table has-medium-font-size\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Atributo<\/strong><\/td><td><strong>Fun\u00e7\u00e3o<\/strong><\/td><td><strong>Import\u00e2ncia<\/strong><\/td><\/tr><\/thead><tbody><tr><td><strong><code>name<\/code><\/strong><\/td><td>Nome que identifica o dado para o servidor.<\/td><td><strong>Crucial<\/strong> para o envio de formul\u00e1rio.<\/td><\/tr><tr><td><strong><code>id<\/code><\/strong><\/td><td>Identificador \u00fanico.<\/td><td><strong>Crucial<\/strong> para associar com a tag <code>&lt;label&gt;<\/code> (acessibilidade).<\/td><\/tr><tr><td><strong><code>rows<\/code><\/strong><\/td><td>Define o <strong>n\u00famero inicial de linhas vis\u00edveis<\/strong> (altura).<\/td><td>Define a altura inicial da caixa.<\/td><\/tr><tr><td><strong><code>cols<\/code><\/strong><\/td><td>Define o <strong>n\u00famero de caracteres vis\u00edveis<\/strong> em uma linha (largura).<\/td><td>Define a largura inicial da caixa.<\/td><\/tr><tr><td><strong><code>maxlength<\/code><\/strong><\/td><td>Define o n\u00famero <strong>m\u00e1ximo de caracteres<\/strong> permitidos.<\/td><td>Valida\u00e7\u00e3o nativa (UX).<\/td><\/tr><tr><td><strong><code>placeholder<\/code><\/strong><\/td><td>Texto de dica que aparece dentro da \u00e1rea e desaparece ao digitar.<\/td><td>UX: Indica ao usu\u00e1rio o que deve ser escrito.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>Exemplo B\u00e1sico:<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">HTML<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;label for=\"msg\"&gt;Sua Mensagem:&lt;\/label&gt;\n&lt;textarea id=\"msg\" name=\"mensagem_contato\" rows=\"6\" cols=\"40\" placeholder=\"Deixe sua mensagem ou feedback aqui.\"&gt;&lt;\/textarea&gt;\n<\/code><\/pre>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<label for=\"msg\">Sua Mensagem:<\/label>\n<textarea id=\"msg\" name=\"mensagem_contato\" rows=\"6\" cols=\"40\" placeholder=\"Deixe sua mensagem ou feedback aqui.\"><\/textarea>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-large-font-size\">2. Conte\u00fado e Propriedades de Estado<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Valor Padr\u00e3o (Conte\u00fado Inicial)<\/h3>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Diferente do <code>&lt;input&gt;<\/code>, o valor inicial da <code>&lt;textarea&gt;<\/code> \u00e9 definido no seu conte\u00fado, e n\u00e3o no atributo <code>value<\/code>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">HTML<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;textarea name=\"comentario\" rows=\"4\"&gt;\nEste \u00e9 um texto padr\u00e3o que o usu\u00e1rio pode editar.\n&lt;\/textarea&gt;\n<\/code><\/pre>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<textarea name=\"comentario\" rows=\"4\">\nEste \u00e9 um texto padr\u00e3o que o usu\u00e1rio pode editar.\n<\/textarea>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Atributos de Estado e Intera\u00e7\u00e3o<\/h3>\n\n\n\n<figure class=\"wp-block-table has-medium-font-size\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Atributo<\/strong><\/td><td><strong>Fun\u00e7\u00e3o<\/strong><\/td><\/tr><\/thead><tbody><tr><td><strong><code>required<\/code><\/strong><\/td><td>Torna o preenchimento obrigat\u00f3rio para o envio do formul\u00e1rio.<\/td><\/tr><tr><td><strong><code>disabled<\/code><\/strong><\/td><td>Impede totalmente a intera\u00e7\u00e3o e o envio do dado.<\/td><\/tr><tr><td><strong><code>readonly<\/code><\/strong><\/td><td>Impede a edi\u00e7\u00e3o, mas permite que o conte\u00fado seja lido e enviado.<\/td><\/tr><tr><td><strong><code>autofocus<\/code><\/strong><\/td><td>Coloca o cursor na <code>&lt;textarea&gt;<\/code> automaticamente ao carregar a p\u00e1gina.<\/td><\/tr><tr><td><strong><code>wrap<\/code><\/strong><\/td><td>Controla a quebra de linha: <code>soft<\/code> (padr\u00e3o) ou <code>hard<\/code> (insere quebras de linha reais no envio).<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-large-font-size\">3. Acessibilidade e Estilo<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">A. A Regra de Ouro da Acessibilidade<\/h3>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">\u00c9 imperativo associar a <code>&lt;textarea&gt;<\/code> a um <code>&lt;label&gt;<\/code> usando o par <code>for<\/code> e <code>id<\/code>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">HTML<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;label for=\"comentario\"&gt;Seus Coment\u00e1rios Detalhados (M\u00e1x: 500 caracteres)&lt;\/label&gt;\n&lt;textarea id=\"comentario\" name=\"comentarios\" maxlength=\"500\"&gt;&lt;\/textarea&gt;\n<\/code><\/pre>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<label for=\"comentario\">Seus Coment\u00e1rios Detalhados (M\u00e1x: 500 caracteres)<\/label>\n<textarea id=\"comentario\" name=\"comentarios\" maxlength=\"500\"><\/textarea>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">B. Controle de Redimensionamento (CSS)<\/h3>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Por padr\u00e3o, os navegadores permitem que o usu\u00e1rio redimensione a <code>&lt;textarea&gt;<\/code>. Voc\u00ea pode controlar isso usando a propriedade CSS <code>resize<\/code>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-medium-font-size\"><code>resize: none;<\/code> (Impede qualquer redimensionamento.)<\/li>\n\n\n\n<li class=\"has-medium-font-size\"><code>resize: vertical;<\/code> (Permite redimensionar apenas a altura.)<\/li>\n\n\n\n<li class=\"has-medium-font-size\"><code>resize: horizontal;<\/code> (Permite redimensionar apenas a largura.)<\/li>\n<\/ul>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>Exemplo de CSS (Opcional):<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CSS<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/* Impede o redimensionamento horizontal e vertical *\/\ntextarea {\n  resize: none; \n}\n<\/code><\/pre>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-large-font-size\">\u2705 Conclus\u00e3o Tag textarea HTML<\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">A tag <code>&lt;textarea&gt;<\/code> \u00e9 indispens\u00e1vel para coletar informa\u00e7\u00f5es extensas. Ao configurar corretamente os atributos de tamanho (<code>rows<\/code>, <code>cols<\/code>) e de restri\u00e7\u00e3o (<code>maxlength<\/code>), e, mais importante, ao garantir a acessibilidade com a tag <strong><code>&lt;label&gt;<\/code><\/strong>, voc\u00ea cria um campo de entrada robusto, f\u00e1cil de usar e que atende a todos os padr\u00f5es modernos de desenvolvimento web.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Toda jornada tem um in\u00edcio, e o in\u00edcio para se tornar um desenvolvedor web \u00e9 dominar as seguintes tecnologias, que voc\u00ea encontra aqui mesmo:<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"\/category\/html\"><img loading=\"lazy\" decoding=\"async\" width=\"758\" height=\"426\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/04\/html.webp\" alt=\"HTML\" class=\"wp-image-600\" srcset=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/04\/html.webp 758w, https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/04\/html-300x169.webp 300w\" sizes=\"auto, (max-width: 758px) 100vw, 758px\" \/><\/a><figcaption class=\"wp-element-caption\">HTML<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"\/category\/css\"><img loading=\"lazy\" decoding=\"async\" width=\"758\" height=\"426\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/04\/Capa-Artigos-Linux.webp\" alt=\"CSS\" class=\"wp-image-702\" srcset=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/04\/Capa-Artigos-Linux.webp 758w, https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/04\/Capa-Artigos-Linux-300x169.webp 300w\" sizes=\"auto, (max-width: 758px) 100vw, 758px\" \/><\/a><figcaption class=\"wp-element-caption\">CSS<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"\/category\/javascript\"><img loading=\"lazy\" decoding=\"async\" width=\"758\" height=\"426\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/04\/javascript.webp\" alt=\"Javascript\" class=\"wp-image-804\" srcset=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/04\/javascript.webp 758w, https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/04\/javascript-300x169.webp 300w\" sizes=\"auto, (max-width: 758px) 100vw, 758px\" \/><\/a><figcaption class=\"wp-element-caption\">JavaScript<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">E se voc\u00ea gosta do nosso conte\u00fado, n\u00e3o deixe de contribuir adquirindo os servi\u00e7os e produtos dos nossos apoiadores e empresas que somos associados:<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/hostinger.com.br\/?REFERRALCODE=1THIAGO62\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"250\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/03\/hostinger.png\" alt=\"Hospedagem Hostinger\" class=\"wp-image-92\"\/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/amzn.to\/3SNDYlc\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"250\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/08\/ofertas-amazon.webp\" alt=\"Ofertas Amazon\" class=\"wp-image-1308\"\/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/amzn.to\/3SNKmt0\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"250\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/08\/amazonprime.webp\" alt=\"Amazon Prime\" class=\"wp-image-1307\"\/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Tempo de leitura: <\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutos<\/span><\/span>Tag textarea HTML: Quando a entrada de dados do usu\u00e1rio exige mais do que uma&#8230;<\/p>\n","protected":false},"author":1,"featured_media":600,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-676","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-html","wpcat-6-id"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Tag textarea HTML - BLOG THIAGO ROSSI<\/title>\n<meta name=\"description\" content=\"Tag HTML textarea: Neste artigo, vamos explorar em detalhes a tag textarea e seus atributos, com exemplos pr\u00e1ticos para cada um deles...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/thiagorossi.com.br\/blog\/tag-textarea-html\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta 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