{"id":7519,"date":"2020-01-22T17:01:17","date_gmt":"2020-01-22T17:01:17","guid":{"rendered":"https:\/\/www.jose-aguilar.com\/blog\/?p=7519"},"modified":"2020-01-22T17:08:41","modified_gmt":"2020-01-22T17:08:41","slug":"como-crear-y-utilizar-variables-en-css","status":"publish","type":"post","link":"https:\/\/www.jose-aguilar.com\/blog\/como-crear-y-utilizar-variables-en-css\/","title":{"rendered":"Como crear y utilizar variables en CSS"},"content":{"rendered":"<p>En este art\u00edculo vas a descubrir como crear y utilizar variables en tus hojas de estilo <strong>CSS <\/strong>utilizando los <em>Custom Properties<\/em> sin necesidad de utilizar <strong>SASS<\/strong> o <strong>LESS<\/strong>.<\/p>\n<p>El objetivo principal es la creaci\u00f3n de variables de forma simple que pueden ser utilizadas para representar colores o espacios que se utilizan en toda la hoja de estilos.<\/p>\n<p>La principal ventaja de esto es que modificando la variable se aplican todos los cambios en todo el documento.<\/p>\n<p>Esta t\u00e9cnica puede ser un buen punto de partida para empezar r\u00e1pido a crear y usar variables dentro de tus hojas de estilos.<\/p>\n<p>Crear una variable en <strong>CSS<\/strong> es tan simple como agregar lo siguiente al principio de tu hoja de estilos:<\/p>\n<div id=\"wpshdo_1\" class=\"wp-synhighlighter-outer\"><div id=\"wpshdt_1\" class=\"wp-synhighlighter-expanded\"><table border=\"0\" width=\"100%\"><tr><td align=\"left\" width=\"80%\"><a name=\"#codesyntax_1\"><\/a><a id=\"wpshat_1\" class=\"wp-synhighlighter-title\" href=\"#codesyntax_1\"  onClick=\"javascript:wpsh_toggleBlock(1)\" title=\"Click to show\/hide code block\">Source code<\/a><\/td><td align=\"right\"><a href=\"#codesyntax_1\" onClick=\"javascript:wpsh_code(1)\" title=\"Show code only\"><img decoding=\"async\" border=\"0\" style=\"border: 0 none\" src=\"https:\/\/www.jose-aguilar.com\/blog\/wp-content\/plugins\/wp-synhighlight\/themes\/default\/images\/code.png\" \/><\/a>&nbsp;<a href=\"#codesyntax_1\" onClick=\"javascript:wpsh_print(1)\" title=\"Print code\"><img decoding=\"async\" border=\"0\" style=\"border: 0 none\" src=\"https:\/\/www.jose-aguilar.com\/blog\/wp-content\/plugins\/wp-synhighlight\/themes\/default\/images\/printer.png\" \/><\/a>&nbsp;<a href=\"https:\/\/www.jose-aguilar.com\/blog\/wp-content\/plugins\/wp-synhighlight\/About.html\" target=\"_blank\" title=\"Show plugin information\"><img decoding=\"async\" border=\"0\" style=\"border: 0 none\" src=\"https:\/\/www.jose-aguilar.com\/blog\/wp-content\/plugins\/wp-synhighlight\/themes\/default\/images\/info.gif\" \/><\/a>&nbsp;<\/td><\/tr><\/table><\/div><div id=\"wpshdi_1\" class=\"wp-synhighlighter-inner\" style=\"display: block;\"><pre class=\"css\" style=\"font-family:monospace;\"><span class=\"re2\">:root <\/span><span class=\"br0\">&#123;<\/span>\n    --primario<span class=\"sy0\">:<\/span> <span class=\"re0\">#7abe47<\/span><span class=\"sy0\">;<\/span>\n    --secundario<span class=\"sy0\">:<\/span> <span class=\"re0\">#ff6c85<\/span><span class=\"sy0\">;<\/span>\n<span class=\"br0\">&#125;<\/span><\/pre><\/div><\/div>\n<p>En este caso, he creado 2 variables para identificar el color primario y el color secundario que se utilizar\u00e1 en el dise\u00f1o de la p\u00e1gina Web.<\/p>\n<p>De esta forma, puedes crear tantas variables como quieras. Yo tan solo he definido 2 colores, pero tambi\u00e9n puedes definir paddings, margins, borders, etc.<\/p>\n<p>\u00bfC\u00f3mo puedo leer las variables creadas en el documento <strong>CSS<\/strong>?<\/p>\n<p>F\u00edjate a continuaci\u00f3n:<\/p>\n<div id=\"wpshdo_2\" class=\"wp-synhighlighter-outer\"><div id=\"wpshdt_2\" class=\"wp-synhighlighter-expanded\"><table border=\"0\" width=\"100%\"><tr><td align=\"left\" width=\"80%\"><a name=\"#codesyntax_2\"><\/a><a id=\"wpshat_2\" class=\"wp-synhighlighter-title\" href=\"#codesyntax_2\"  onClick=\"javascript:wpsh_toggleBlock(2)\" title=\"Click to show\/hide code block\">Source code<\/a><\/td><td align=\"right\"><a href=\"#codesyntax_2\" onClick=\"javascript:wpsh_code(2)\" title=\"Show code only\"><img decoding=\"async\" border=\"0\" style=\"border: 0 none\" src=\"https:\/\/www.jose-aguilar.com\/blog\/wp-content\/plugins\/wp-synhighlight\/themes\/default\/images\/code.png\" \/><\/a>&nbsp;<a href=\"#codesyntax_2\" onClick=\"javascript:wpsh_print(2)\" title=\"Print code\"><img decoding=\"async\" border=\"0\" style=\"border: 0 none\" src=\"https:\/\/www.jose-aguilar.com\/blog\/wp-content\/plugins\/wp-synhighlight\/themes\/default\/images\/printer.png\" \/><\/a>&nbsp;<a href=\"https:\/\/www.jose-aguilar.com\/blog\/wp-content\/plugins\/wp-synhighlight\/About.html\" target=\"_blank\" title=\"Show plugin information\"><img decoding=\"async\" border=\"0\" style=\"border: 0 none\" src=\"https:\/\/www.jose-aguilar.com\/blog\/wp-content\/plugins\/wp-synhighlight\/themes\/default\/images\/info.gif\" \/><\/a>&nbsp;<\/td><\/tr><\/table><\/div><div id=\"wpshdi_2\" class=\"wp-synhighlighter-inner\" style=\"display: block;\"><pre class=\"css\" style=\"font-family:monospace;\">body <span class=\"br0\">&#123;<\/span>\n    <span class=\"kw1\">background-color<\/span><span class=\"sy0\">:<\/span> var<span class=\"br0\">&#40;<\/span>--primario<span class=\"br0\">&#41;<\/span><span class=\"sy0\">;<\/span>\n<span class=\"br0\">&#125;<\/span><\/pre><\/div><\/div>\n<p>Al cuerpo de la p\u00e1gina (body) le estoy dando el color de fondo primario.<\/p>\n<p>La principal ventaja de utilizar variables en <strong>CSS<\/strong> es que al cambiar el valor de la variable, cambia su valor en todos los lugares donde haya sido utilizada.<\/p>\n<p>El soporte de las variables <strong>CSS<\/strong> est\u00e1 bien aceptado por la mayor\u00eda de navegadores. Parece ser que solo Internet Explorer no lo soporta.<\/p>\n<p>Si necesitas que tu proyecto funcione tambi\u00e9n en Internet Explorer tendr\u00e1s que buscar una soluci\u00f3n m\u00e1s sofisticada como <strong>SASS<\/strong> para la creaci\u00f3n de variables en tu documento <strong>CSS<\/strong>, en caso contrario, esta caracter\u00edstica de <strong>CSS<\/strong> te puede venir genial.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Descubre como definir variables en tu hoja de estilos css para utilizarlas en todo el contenido del documento. Ideal para definir colores, espacios, m\u00e1rgenes, etc.<\/p>\n","protected":false},"author":1,"featured_media":7520,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-7519","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-css"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Como crear y utilizar variables en CSS - Jose Aguilar Blog<\/title>\n<meta name=\"description\" content=\"Descubre como definir variables en tu hoja de estilos css para utilizarlas en todo el contenido del documento. Ideal para definir colores, espacios, m\u00e1rgenes, etc.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como crear y utilizar variables en CSS - Jose Aguilar Blog\" \/>\n<meta property=\"og:description\" content=\"Descubre como definir variables en tu hoja de estilos css para utilizarlas en todo el contenido del documento. 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