{"id":372,"date":"2024-05-21T12:41:56","date_gmt":"2024-05-21T10:41:56","guid":{"rendered":"https:\/\/blog.sutilweb.eu\/?page_id=372"},"modified":"2024-05-21T12:41:56","modified_gmt":"2024-05-21T10:41:56","slug":"23-atributos-de-inputs-y-formularios","status":"publish","type":"page","link":"https:\/\/sutilweb.eu\/index.php\/lenguajes\/html5\/html5-practico\/23-atributos-de-inputs-y-formularios\/","title":{"rendered":"23. Atributos de inputs y formularios"},"content":{"rendered":"\n<p>Algunos de los <strong>atributos<\/strong> que vamos a ver son necesarios en nuestros <strong>formularios,<\/strong> otros los vamos a incluir para hacer nuestras validaciones.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Nota:<\/strong> generalmente los <strong>atributos booleanos<\/strong> (los que s\u00f3lo hay que poner su nombre) siempre van al final.<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><em>readonly:<\/em><\/strong> es un <strong>atributo<\/strong> que hace nuestro <strong>input<\/strong> de s\u00f3lo lectura.<\/li>\n\n\n\n<li><strong><em>disabled:<\/em><\/strong> inhabilita el elemento, es bueno utilizarlo junto con el atributo <strong><em>readonly<\/em><\/strong>.<\/li>\n\n\n\n<li><strong><em>placeholder:<\/em><\/strong> es un texto que se incluye en el <strong>input<\/strong> para dar una idea al usuario de lo que va a escribir.<\/li>\n\n\n\n<li><strong><em>action:<\/em><\/strong> este <strong>atributo<\/strong> indica hacia donde se va a enviar nuestro formulario. Si no dispone de este atributo, el formulario se va a autoprocesar.<\/li>\n\n\n\n<li><strong><em>name:<\/em><\/strong> es el <strong>atributo<\/strong> que da nombre de variable de formulario que se va a dar para cada uno de los <strong>inputs<\/strong> cuando se envi\u00e9 el formulario.<\/li>\n\n\n\n<li><strong><em>method:<\/em><\/strong> es el atributo que le dice al elemento <strong><em>&lt;form><\/em><\/strong> por qu\u00e9 m\u00e9todo tiene que enviar el formulario.<\/li>\n\n\n\n<li><strong><em>autocomplete=\u00bbon\/off\u00bb<\/em><\/strong>: hace que se autocomplete o no el <strong>input<\/strong> del formulario.<\/li>\n\n\n\n<li><strong><em>required:<\/em><\/strong> es un atributo que obliga a rellenar el <strong>input.<\/strong><\/li>\n\n\n\n<li><strong><em>pattern:<\/em><\/strong> permite poner un patr\u00f3n a nuestro input, para ello se debe tener conocimiento de <a href=\"https:\/\/sutilweb.eu\/expresiones-regulares-una-guia-completa-para-el-dominio-de-las-busquedas-y-validaciones\/\"><strong>expresiones regulares<\/strong><\/a>. Los patrones permiten incluir cierto tipo de informaci\u00f3n muy concreta en nuestros formularios.<\/li>\n\n\n\n<li><strong><em>title:<\/em><\/strong> se utiliza para especificar que quieres poner cuando los usuario no rellenen un campo correctamente.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">M\u00e9todos de env\u00edo<\/h2>\n\n\n\n<p>Existen dos m\u00e9todos de env\u00edo de formularios.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u00e9todo <strong>GET:<\/strong> es el m\u00e9todo que toma por defecto un formulario, env\u00eda por la URL los valores<\/li>\n\n\n\n<li>M\u00e9todo <strong>POST:<\/strong> env\u00eda la informaci\u00f3n del formulario en las cabeceras del documento, de forma oculta.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">&lt;label&gt;<\/h2>\n\n\n\n<p>Junto con cada <strong><em>&lt;input&gt;<\/em><\/strong> podemos incluir una etiqueta <strong><em>&lt;label&gt;<\/em><\/strong> con un atributo <strong><em>for,<\/em><\/strong> que lo que hace es que si ponemos un <strong>identificador <em>(id)<\/em><\/strong> a nuestro <strong>input,<\/strong> utilizamos ese nombre de identificador a la etiqueta <strong><em>&lt;label&gt;<\/em><\/strong> y vincula ambas etiquetas. Se hace de la siguiente manera.<\/p>\n\n\n\n<p><strong>Ejm<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">&lt;label for=\"usuario\"&gt;Usuario&lt;\/label&gt;\n&lt;input type=\"text\" name=\"usuario\" id=\"usuario\"&gt;<\/pre>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Nota:<\/strong> A nivel de accesibilidad, las <strong><em>&lt;label&gt;<\/em><\/strong> son importantes.<\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Algunos de los atributos que vamos a ver son necesarios en nuestros formularios, otros los vamos a incluir para hacer [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":89,"menu_order":22,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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