{"id":2558,"date":"2012-04-23T13:27:50","date_gmt":"2012-04-23T13:27:50","guid":{"rendered":"https:\/\/www.jose-aguilar.com\/blog\/?p=2558"},"modified":"2019-08-15T11:59:20","modified_gmt":"2019-08-15T11:59:20","slug":"obtener-los-datos-de-un-formulario-con-serialize","status":"publish","type":"post","link":"https:\/\/www.jose-aguilar.com\/blog\/obtener-los-datos-de-un-formulario-con-serialize\/","title":{"rendered":"Obtener los datos de un formulario con serialize()"},"content":{"rendered":"<p>En este art\u00edculo vas a descubrir como capturar o obtener r\u00e1pidamente todos los datos de un formulario con la funci\u00f3n <em>serialize()<\/em> que est\u00e1 disponible en la librer\u00eda <strong>jQuery<\/strong>.<\/p>\n<p>Cuando trabajas con formularios con muchos datos y muchos campos es posible que consideres un poco tedioso tener que capturar cada campo para enviarlos como par\u00e1metros a una llamada <strong>Ajax<\/strong> por ejemplo.<\/p>\n<p>jQuery tiene una funci\u00f3n llamada <em>serialize()<\/em> que te puede ahorrar mucho trabajo.<\/p>\n<p>Esta funci\u00f3n permite transformar la informaci\u00f3n que viene del formulario en una cadena de texto apta para construir un dataString que puede recibir un archivo <strong>PHP<\/strong> cuando se ejecuta una llamada <strong>Ajax<\/strong>.<\/p>\n<p>En formularios largos esta funci\u00f3n puede ahorrarte mucho trabajo.<\/p>\n<p>En el ejemplo en funcionamiento vas a ver un formulario peque\u00f1o con tan solo 3 campos pero, ya puedes ver la ventaja que ofrece <em>serialize()\u00a0<\/em>al serializar din\u00e1micamente todos sus campos y valores en una cadena.<\/p>\n<h3>Formulario HTML<\/h3>\n<p>El c\u00f3digo <strong>HTML<\/strong> del formulario se puede agregar en el cuerpo de la p\u00e1gina o dentro de la etiqueta &lt;body&gt;. Puede ser algo como lo siguiente:<\/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=\"html4strict\" style=\"font-family:monospace;\"><span class=\"sc2\">&lt;<a href=\"http:\/\/december.com\/html\/4\/element\/form.html\"><span class=\"kw2\">form<\/span><\/a> <span class=\"kw3\">id<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;create-account-form&quot;<\/span> <span class=\"kw3\">action<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;#&quot;<\/span>&gt;<\/span>\n    <span class=\"sc2\">&lt;<a href=\"http:\/\/december.com\/html\/4\/element\/div.html\"><span class=\"kw2\">div<\/span><\/a> <span class=\"kw3\">class<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;form-group&quot;<\/span>&gt;<\/span>\n        <span class=\"sc2\">&lt;<a href=\"http:\/\/december.com\/html\/4\/element\/label.html\"><span class=\"kw2\">label<\/span><\/a> <span class=\"kw3\">for<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;name&quot;<\/span>&gt;<\/span>Nombre<span class=\"sc2\">&lt;<span class=\"sy0\">\/<\/span><a href=\"http:\/\/december.com\/html\/4\/element\/label.html\"><span class=\"kw2\">label<\/span><\/a>&gt;<\/span>\n        <span class=\"sc2\">&lt;<a href=\"http:\/\/december.com\/html\/4\/element\/input.html\"><span class=\"kw2\">input<\/span><\/a> <span class=\"kw3\">type<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;text&quot;<\/span> <span class=\"kw3\">class<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;form-control&quot;<\/span> <span class=\"kw3\">id<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;name&quot;<\/span> <span class=\"kw3\">name<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;name&quot;<\/span> <span class=\"kw3\">value<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;Demo Demo&quot;<\/span>&gt;<\/span>\n    <span class=\"sc2\">&lt;<span class=\"sy0\">\/<\/span><a href=\"http:\/\/december.com\/html\/4\/element\/div.html\"><span class=\"kw2\">div<\/span><\/a>&gt;<\/span>\n    <span class=\"sc2\">&lt;<a href=\"http:\/\/december.com\/html\/4\/element\/div.html\"><span class=\"kw2\">div<\/span><\/a> <span class=\"kw3\">class<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;form-group&quot;<\/span>&gt;<\/span>\n        <span class=\"sc2\">&lt;<a href=\"http:\/\/december.com\/html\/4\/element\/label.html\"><span class=\"kw2\">label<\/span><\/a> <span class=\"kw3\">for<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;email&quot;<\/span>&gt;<\/span>Email<span class=\"sc2\">&lt;<span class=\"sy0\">\/<\/span><a href=\"http:\/\/december.com\/html\/4\/element\/label.html\"><span class=\"kw2\">label<\/span><\/a>&gt;<\/span>\n        <span class=\"sc2\">&lt;<a href=\"http:\/\/december.com\/html\/4\/element\/input.html\"><span class=\"kw2\">input<\/span><\/a> <span class=\"kw3\">type<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;email&quot;<\/span> <span class=\"kw3\">class<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;form-control&quot;<\/span> <span class=\"kw3\">id<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;email&quot;<\/span> <span class=\"kw3\">name<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;email&quot;<\/span> <span class=\"kw3\">value<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;demo@demo.com&quot;<\/span>&gt;<\/span>\n    <span class=\"sc2\">&lt;<span class=\"sy0\">\/<\/span><a href=\"http:\/\/december.com\/html\/4\/element\/div.html\"><span class=\"kw2\">div<\/span><\/a>&gt;<\/span>\n    <span class=\"sc2\">&lt;<a href=\"http:\/\/december.com\/html\/4\/element\/div.html\"><span class=\"kw2\">div<\/span><\/a> <span class=\"kw3\">class<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;form-group&quot;<\/span>&gt;<\/span>\n        <span class=\"sc2\">&lt;<a href=\"http:\/\/december.com\/html\/4\/element\/label.html\"><span class=\"kw2\">label<\/span><\/a> <span class=\"kw3\">for<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;description&quot;<\/span>&gt;<\/span>Descripci\u00f3n<span class=\"sc2\">&lt;<span class=\"sy0\">\/<\/span><a href=\"http:\/\/december.com\/html\/4\/element\/label.html\"><span class=\"kw2\">label<\/span><\/a>&gt;<\/span>\n        <span class=\"sc2\">&lt;<a href=\"http:\/\/december.com\/html\/4\/element\/textarea.html\"><span class=\"kw2\">textarea<\/span><\/a> <span class=\"kw3\">class<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;form-control&quot;<\/span> <span class=\"kw3\">id<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;description&quot;<\/span> <span class=\"kw3\">name<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;description&quot;<\/span> <span class=\"kw3\">rows<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;3&quot;<\/span>&gt;<\/span>Lorem ipsum<span class=\"sc2\">&lt;<span class=\"sy0\">\/<\/span><a href=\"http:\/\/december.com\/html\/4\/element\/textarea.html\"><span class=\"kw2\">textarea<\/span><\/a>&gt;<\/span>\n    <span class=\"sc2\">&lt;<span class=\"sy0\">\/<\/span><a href=\"http:\/\/december.com\/html\/4\/element\/div.html\"><span class=\"kw2\">div<\/span><\/a>&gt;<\/span>\n    <span class=\"sc2\">&lt;<a href=\"http:\/\/december.com\/html\/4\/element\/button.html\"><span class=\"kw2\">button<\/span><\/a> <span class=\"kw3\">type<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;submit&quot;<\/span> <span class=\"kw3\">class<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;btn btn-primary&quot;<\/span> <span class=\"kw3\">id<\/span><span class=\"sy0\">=<\/span><span class=\"st0\">&quot;create-account-button&quot;<\/span>&gt;<\/span>Crear cuenta<span class=\"sc2\">&lt;<span class=\"sy0\">\/<\/span><a href=\"http:\/\/december.com\/html\/4\/element\/button.html\"><span class=\"kw2\">button<\/span><\/a>&gt;<\/span>\n<span class=\"sc2\">&lt;<span class=\"sy0\">\/<\/span><a href=\"http:\/\/december.com\/html\/4\/element\/form.html\"><span class=\"kw2\">form<\/span><\/a>&gt;<\/span><\/pre><\/div><\/div>\n<p>En este formulario el usuario puede introducir un nombre, un email y una descripci\u00f3n.<\/p>\n<p>Dentro del formulario tambi\u00e9n hay un bot\u00f3n con identificador \u00abcreate-account-button\u00bb que uso a continuaci\u00f3n para controlar el evento \u00abclick\u00bb.<\/p>\n<h3>Serializaci\u00f3n del formulario con jQuery serialize<\/h3>\n<p>F\u00edjate bien en el siguiente c\u00f3digo que puedes agregar en la cabecera de la p\u00e1gina o antes de la etiqueta de cierre del &lt;\/body&gt;:<\/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=\"javascript\" style=\"font-family:monospace;\"><span class=\"sy0\">&lt;<\/span>script src<span class=\"sy0\">=<\/span><span class=\"st0\">&quot;https:\/\/code.jquery.com\/jquery-3.2.1.js&quot;<\/span><span class=\"sy0\">&gt;&lt;\/<\/span>script<span class=\"sy0\">&gt;<\/span>\n<span class=\"sy0\">&lt;<\/span>script<span class=\"sy0\">&gt;<\/span>\n$<span class=\"br0\">&#40;<\/span>document<span class=\"br0\">&#41;<\/span>.<span class=\"me1\">ready<\/span><span class=\"br0\">&#40;<\/span><span class=\"kw2\">function<\/span><span class=\"br0\">&#40;<\/span><span class=\"br0\">&#41;<\/span> <span class=\"br0\">&#123;<\/span>\n    $<span class=\"br0\">&#40;<\/span><span class=\"st0\">'#create-account-button'<\/span><span class=\"br0\">&#41;<\/span>.<span class=\"me1\">on<\/span><span class=\"br0\">&#40;<\/span><span class=\"st0\">'click'<\/span><span class=\"sy0\">,<\/span> <span class=\"kw2\">function<\/span><span class=\"br0\">&#40;<\/span>e<span class=\"br0\">&#41;<\/span> <span class=\"br0\">&#123;<\/span>\n        e.<span class=\"me1\">preventDefault<\/span><span class=\"br0\">&#40;<\/span><span class=\"br0\">&#41;<\/span><span class=\"sy0\">;<\/span>\n        <span class=\"kw2\">var<\/span> dataString <span class=\"sy0\">=<\/span> $<span class=\"br0\">&#40;<\/span><span class=\"st0\">'#create-account-form'<\/span><span class=\"br0\">&#41;<\/span>.<span class=\"me1\">serialize<\/span><span class=\"br0\">&#40;<\/span><span class=\"br0\">&#41;<\/span><span class=\"sy0\">;<\/span>\n        <span class=\"kw3\">alert<\/span><span class=\"br0\">&#40;<\/span><span class=\"st0\">'Datos serializados: '<\/span><span class=\"sy0\">+<\/span>dataString<span class=\"br0\">&#41;<\/span><span class=\"sy0\">;<\/span>\n    <span class=\"br0\">&#125;<\/span><span class=\"br0\">&#41;<\/span><span class=\"sy0\">;<\/span> \n<span class=\"br0\">&#125;<\/span><span class=\"br0\">&#41;<\/span><span class=\"sy0\">;<\/span>\n<span class=\"sy0\">&lt;\/<\/span>script<span class=\"sy0\">&gt;<\/span><\/pre><\/div><\/div>\n<p>Donde estoy agregando la librer\u00eda <strong>jQuery<\/strong> y seguidamente esperando a que el bot\u00f3n del formulario sea pulsado.<\/p>\n<p>En el momento de pulsar el bot\u00f3n, se omite la funcionalidad por defecto del formulario para serializar la informaci\u00f3n del formulario asignando su resultado a la variable dataString para mostrarlo en una alerta.<\/p>\n<h3>Conclusi\u00f3n<\/h3>\n<p>La funci\u00f3n <em>serialize()<\/em> es muy \u00fatil usarla cuando tus formulario son largos y necesitas enviar toda la informaci\u00f3n a un archivo <strong>PHP<\/strong> utilizando la t\u00e9cnica <strong>Ajax<\/strong>. En este punto, puedes construir un dataString de forma r\u00e1pida sin necesidad de ir campo a campo.<\/p>\n<p>En la mayor\u00eda de los casos los datos de los formularios requieren ser validados. Puedes hacerlo de forma independiente a esto. La validaci\u00f3n de los campos la puedes hacer antes de la serializacion. En este caso, si que tendr\u00e1s que revisar campo a campo para revisar si todo est\u00e1 correcto para proceder con la serializaci\u00f3n y env\u00edo al servidor.<\/p>\n<p style=\"text-align: center;\"><a class=\"btn btn-secondary\" href=\"https:\/\/www.jose-aguilar.com\/scripts\/jquery\/serialize\/\" target=\"_blank\" rel=\"noopener noreferrer\"><i class=\"fa fa-eye\"><\/i> Ver demo<\/a> <a class=\"btn btn-primary\" href=\"https:\/\/www.jose-aguilar.com\/scripts\/jquery\/serialize\/serialize.zip\"><i class=\"fa fa-download\"><\/i> Descargar<\/a><\/p>\n<p style=\"text-align: center;\"><em>Esta entrada ha sido actualizada el 14\/08\/2019.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Descubre como capturar r\u00e1pidamente todos los datos de un formulario con la funci\u00f3n serialize() que est\u00e1 disponible en la librer\u00eda jQuery. Tutorial y c\u00f3digo de ejemplo.<\/p>\n","protected":false},"author":1,"featured_media":7417,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[84,79],"class_list":["post-2558","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-jquery","tag-formularios","tag-inputs"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Obtener los datos de un formulario con serialize() - Jose Aguilar Blog<\/title>\n<meta name=\"description\" content=\"Descubre como capturar r\u00e1pidamente todos los datos de un formulario con la funci\u00f3n serialize() que est\u00e1 disponible en la librer\u00eda jQuery.\" \/>\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=\"Obtener los datos de un formulario con serialize() - 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