{"id":401,"date":"2026-06-04T00:02:36","date_gmt":"2026-06-03T22:02:36","guid":{"rendered":"https:\/\/tecnologia.villanett.com\/?post_type=glossary&#038;p=401"},"modified":"2026-06-06T00:09:27","modified_gmt":"2026-06-05T22:09:27","slug":"javascript","status":"publish","type":"glossary","link":"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/javascript\/","title":{"rendered":"Javascript"},"content":{"rendered":"<p data-start=\"0\" data-end=\"156\"><strong data-start=\"0\" data-end=\"14\"><a class=\"glossaryLink\" href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/javascript\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">JavaScript<\/a><\/strong> es un lenguaje de programaci&oacute;n utilizado principalmente para agregar <strong data-start=\"84\" data-end=\"127\">interactividad y funcionalidad din&aacute;mica<\/strong> a sitios y aplicaciones web.<\/p>\n<p data-start=\"158\" data-end=\"272\">Junto con <strong data-start=\"168\" data-end=\"176\"><a class=\"glossaryLink\" href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/html\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">HTML<\/a><\/strong> (estructura) y <strong data-start=\"192\" data-end=\"199\"><a class=\"glossaryLink\"  href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/css\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>CSS<\/a><\/strong> (dise&ntilde;o), forma una de las tecnolog&iacute;as fundamentales del desarrollo web.<\/p>\n<h3 data-section-id=\"1pq745u\" data-start=\"274\" data-end=\"294\">&iquest;Para qu&eacute; sirve?<\/h3>\n<ul data-start=\"295\" data-end=\"496\">\n<li data-section-id=\"1txp68r\" data-start=\"295\" data-end=\"327\">Crear sitios web interactivos.<\/li>\n<li data-section-id=\"k1zuve\" data-start=\"328\" data-end=\"350\">Validar formularios.<\/li>\n<li data-section-id=\"10yit1\" data-start=\"351\" data-end=\"373\">Mostrar animaciones.<\/li>\n<li data-section-id=\"142z58t\" data-start=\"374\" data-end=\"420\">Actualizar contenido sin recargar la p&aacute;gina.<\/li>\n<li data-section-id=\"1nz9tbm\" data-start=\"421\" data-end=\"452\">Desarrollar aplicaciones web.<\/li>\n<li data-section-id=\"jnj8uj\" data-start=\"453\" data-end=\"496\">Crear aplicaciones de <a class=\"glossaryLink\" href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/servidor\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">servidor<\/a> y m&oacute;viles.<\/li>\n<\/ul>\n<h3 data-section-id=\"iev4a1\" data-start=\"498\" data-end=\"517\">Ejemplos de uso<\/h3>\n<p data-start=\"518\" data-end=\"575\">Cuando en una p&aacute;gina web ocurre alguna de estas acciones:<\/p>\n<ul data-start=\"577\" data-end=\"728\">\n<li data-section-id=\"de1o6d\" data-start=\"577\" data-end=\"607\">Un men&uacute; desplegable se abre.<\/li>\n<li data-section-id=\"jp3qzc\" data-start=\"608\" data-end=\"640\">Aparece una ventana emergente.<\/li>\n<li data-section-id=\"svw9w7\" data-start=\"641\" data-end=\"678\">Se actualiza un carrito de compras.<\/li>\n<li data-section-id=\"1s71rgg\" data-start=\"679\" data-end=\"728\">Se muestra una galer&iacute;a de im&aacute;genes interactiva.<\/li>\n<\/ul>\n<p data-start=\"730\" data-end=\"787\">Generalmente <a class=\"glossaryLink\" href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/javascript\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">JavaScript<\/a> est&aacute; detr&aacute;s de esa funcionalidad.<\/p>\n<h3 data-section-id=\"ouxn9j\" data-start=\"789\" data-end=\"807\">Ejemplo b&aacute;sico<\/h3>\n<div class=\"relative w-full mt-4 mb-1\">\n<div class=\"\">\n<div class=\"contents\">\n<div class=\"relative\">\n<div class=\"h-full min-h-0 min-w-0\">\n<div class=\"h-full min-h-0 min-w-0\">\n<div class=\"border border-token-border-light border-radius-3xl corner-superellipse\/1.1 rounded-3xl\">\n<div class=\"h-full w-full border-radius-3xl bg-token-bg-elevated-secondary corner-superellipse\/1.1 overflow-clip rounded-3xl lxnfua_clipPathFallback\">\n<div class=\"pointer-events-none absolute inset-x-4 top-12 bottom-4\">\n<div class=\"pointer-events-none sticky z-40 shrink-0 z-1!\">\n<div class=\"sticky bg-token-border-light\"><\/div>\n<\/div>\n<\/div>\n<div class=\"relative\">\n<div class=\"\">\n<div class=\"relative z-0 flex max-w-full\">\n<div id=\"code-block-viewer\" class=\"q9tKkq_viewer cm-editor z-10 light:cm-light dark:cm-light flex h-full w-full flex-col items-stretch &#892;d &#892;r\" dir=\"ltr\">\n<div class=\"cm-scroller\">\n<pre class=\"cm-content q9tKkq_readonly m-0\"><code><span class=\"&#892;m\">alert<\/span>(<span class=\"&#892;k\">&quot;Hola Mundo&quot;<\/span>);<\/code><\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"\">\n<div class=\"h-full min-h-0 min-w-0\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p data-start=\"849\" data-end=\"906\">Este c&oacute;digo muestra una ventana emergente con el mensaje:<\/p>\n<div class=\"relative w-full mt-4 mb-1\">\n<div class=\"\">\n<div class=\"contents\">\n<div class=\"relative\">\n<div class=\"h-full min-h-0 min-w-0\">\n<div class=\"h-full min-h-0 min-w-0\">\n<div class=\"border border-token-border-light border-radius-3xl corner-superellipse\/1.1 rounded-3xl\">\n<div class=\"h-full w-full border-radius-3xl bg-token-bg-elevated-secondary corner-superellipse\/1.1 overflow-clip rounded-3xl lxnfua_clipPathFallback\">\n<div class=\"pointer-events-none absolute end-1.5 top-1 z-2 md:end-2 md:top-1\"><\/div>\n<div class=\"relative\">\n<div class=\"pe-11 pt-3\">\n<div class=\"relative z-0 flex max-w-full\">\n<div id=\"code-block-viewer\" class=\"q9tKkq_viewer cm-editor z-10 light:cm-light dark:cm-light flex h-full w-full flex-col items-stretch &#892;d &#892;r\" dir=\"ltr\">\n<div class=\"cm-scroller\">\n<pre class=\"cm-content q9tKkq_readonly m-0\"><code>Hola Mundo<\/code><\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"\">\n<div class=\"h-full min-h-0 min-w-0\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h3 data-section-id=\"qhfs8z\" data-start=\"932\" data-end=\"951\">&iquest;C&oacute;mo funciona?<\/h3>\n<div class=\"relative w-full mt-4 mb-1\">\n<div class=\"\">\n<div class=\"contents\">\n<div class=\"relative\">\n<div class=\"h-full min-h-0 min-w-0\">\n<div class=\"h-full min-h-0 min-w-0\">\n<div class=\"border border-token-border-light border-radius-3xl corner-superellipse\/1.1 rounded-3xl\">\n<div class=\"h-full w-full border-radius-3xl bg-token-bg-elevated-secondary corner-superellipse\/1.1 overflow-clip rounded-3xl lxnfua_clipPathFallback\">\n<div class=\"pointer-events-none absolute end-1.5 top-1 z-2 md:end-2 md:top-1\"><\/div>\n<div class=\"relative\">\n<div class=\"pe-11 pt-3\">\n<div class=\"relative z-0 flex max-w-full\">\n<div id=\"code-block-viewer\" class=\"q9tKkq_viewer cm-editor z-10 light:cm-light dark:cm-light flex h-full w-full flex-col items-stretch &#892;d &#892;r\" dir=\"ltr\">\n<div class=\"cm-scroller\">\n<pre class=\"cm-content q9tKkq_readonly m-0\"><code><a class=\"glossaryLink\" href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/html\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">HTML<\/a> &rarr; Estructura\n<a class=\"glossaryLink\"  href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/css\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>CSS<\/a> &rarr; Dise&ntilde;o\n<a class=\"glossaryLink\" href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/javascript\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">JavaScript<\/a> &rarr; Interactividad<\/code><\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"\">\n<div class=\"h-full min-h-0 min-w-0\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h3 data-section-id=\"2y84jl\" data-start=\"1037\" data-end=\"1059\">&iquest;D&oacute;nde se ejecuta?<\/h3>\n<ul data-start=\"1060\" data-end=\"1298\">\n<li data-section-id=\"8plig\" data-start=\"1060\" data-end=\"1212\">En navegadores web como:\n<ul data-start=\"1089\" data-end=\"1212\">\n<li data-section-id=\"15a85x\" data-start=\"1089\" data-end=\"1128\"><span class=\"\" data-state=\"closed\">Google Chrome<\/span><\/li>\n<li data-section-id=\"lyf7sl\" data-start=\"1131\" data-end=\"1170\"><span class=\"\" data-state=\"closed\">Mozilla Firefox<\/span><\/li>\n<li data-section-id=\"wlg39x\" data-start=\"1173\" data-end=\"1212\"><span class=\"\" data-state=\"closed\">Microsoft Edge<\/span><\/li>\n<\/ul>\n<\/li>\n<li data-section-id=\"7w222y\" data-start=\"1214\" data-end=\"1298\">En servidores mediante tecnolog&iacute;as como:\n<ul data-start=\"1259\" data-end=\"1298\">\n<li data-section-id=\"1etlrsl\" data-start=\"1259\" data-end=\"1298\"><span class=\"\" data-state=\"closed\">Node.js<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3 data-section-id=\"yp2f3q\" data-start=\"1300\" data-end=\"1312\">Ventajas<\/h3>\n<ul data-start=\"1313\" data-end=\"1533\">\n<li data-section-id=\"1e9hqtg\" data-start=\"1313\" data-end=\"1352\">F&aacute;cil de aprender para principiantes.<\/li>\n<li data-section-id=\"22bd3b\" data-start=\"1353\" data-end=\"1401\">Compatible con todos los navegadores modernos.<\/li>\n<li data-section-id=\"1rdl9jx\" data-start=\"1402\" data-end=\"1438\">Gran comunidad de desarrolladores.<\/li>\n<li data-section-id=\"14s0jsj\" data-start=\"1439\" data-end=\"1489\">Amplio ecosistema de herramientas y bibliotecas.<\/li>\n<li data-section-id=\"1wov97r\" data-start=\"1490\" data-end=\"1533\">Permite crear aplicaciones muy completas.<\/li>\n<\/ul>\n<h3 data-section-id=\"1s08zhc\" data-start=\"1535\" data-end=\"1573\">Frameworks y bibliotecas populares<\/h3>\n<ul data-start=\"1574\" data-end=\"1733\">\n<li data-section-id=\"1fetjdh\" data-start=\"1574\" data-end=\"1613\"><span class=\"\" data-state=\"closed\">React<\/span><\/li>\n<li data-section-id=\"16uh11\" data-start=\"1614\" data-end=\"1653\"><span class=\"\" data-state=\"closed\">Angular<\/span><\/li>\n<li data-section-id=\"btvcid\" data-start=\"1654\" data-end=\"1693\"><span class=\"\" data-state=\"closed\">Vue.js<\/span><\/li>\n<li data-section-id=\"u21111\" data-start=\"1694\" data-end=\"1733\"><span class=\"\" data-state=\"closed\">Node.js<\/span><\/li>\n<\/ul>\n<h3 data-section-id=\"1gfwdno\" data-start=\"1735\" data-end=\"1773\">Diferencia entre <a class=\"glossaryLink\"  href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/java\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>Java<\/a> y <a class=\"glossaryLink\" href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/javascript\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">JavaScript<\/a><\/h3>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"1775\" data-end=\"2079\">\n<thead data-start=\"1775\" data-end=\"1796\">\n<tr data-start=\"1775\" data-end=\"1796\">\n<th class=\"last:pe-10\" data-start=\"1775\" data-end=\"1782\" data-col-size=\"md\"><a class=\"glossaryLink\"  href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/java\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>Java<\/a><\/th>\n<th class=\"last:pe-10\" data-start=\"1782\" data-end=\"1796\" data-col-size=\"md\"><a class=\"glossaryLink\" href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/javascript\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">JavaScript<\/a><\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"1820\" data-end=\"2079\">\n<tr data-start=\"1820\" data-end=\"1930\">\n<td data-start=\"1820\" data-end=\"1879\" data-col-size=\"md\">Lenguaje orientado a objetos para aplicaciones completas<\/td>\n<td data-start=\"1879\" data-end=\"1930\" data-col-size=\"md\">Lenguaje enfocado en la web y la interactividad<\/td>\n<\/tr>\n<tr data-start=\"1931\" data-end=\"1998\">\n<td data-start=\"1931\" data-end=\"1954\" data-col-size=\"md\">Se ejecuta en la JVM<\/td>\n<td data-start=\"1954\" data-end=\"1998\" data-col-size=\"md\">Se ejecuta principalmente en navegadores<\/td>\n<\/tr>\n<tr data-start=\"1999\" data-end=\"2079\">\n<td data-start=\"1999\" data-end=\"2037\" data-col-size=\"md\">Muy usado en sistemas empresariales<\/td>\n<td data-start=\"2037\" data-end=\"2079\" data-col-size=\"md\">Muy usado en sitios y aplicaciones web<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p data-start=\"2081\" data-end=\"2163\">Aunque sus nombres son parecidos, <strong data-start=\"2115\" data-end=\"2162\"><a class=\"glossaryLink\"  href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/java\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'  tabindex='0' role='link'>Java<\/a> y <a class=\"glossaryLink\" href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/javascript\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">JavaScript<\/a> son tecnolog&iacute;as distintas<\/strong>.<\/p>\n<h3 data-section-id=\"ghdlj7\" data-start=\"2165\" data-end=\"2185\">Ejemplo pr&aacute;ctico<\/h3>\n<p data-start=\"2186\" data-end=\"2227\">En una <a class=\"glossaryLink\" href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/tienda-en-linea\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">tienda en l&iacute;nea<\/a>, <a class=\"glossaryLink\" href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/javascript\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">JavaScript<\/a> puede:<\/p>\n<ul data-start=\"2228\" data-end=\"2369\">\n<li data-section-id=\"212or9\" data-start=\"2228\" data-end=\"2278\">Actualizar el total del carrito autom&aacute;ticamente.<\/li>\n<li data-section-id=\"h2lk9b\" data-start=\"2279\" data-end=\"2322\">Mostrar productos sin recargar la p&aacute;gina.<\/li>\n<li data-section-id=\"1sv42f8\" data-start=\"2323\" data-end=\"2369\">Validar datos antes de enviar un formulario.<\/li>\n<\/ul>\n<h3 data-section-id=\"fnl5kv\" data-start=\"2371\" data-end=\"2386\">Importancia<\/h3>\n<p data-start=\"2387\" data-end=\"2517\">Actualmente, pr&aacute;cticamente todos los sitios web modernos utilizan <a class=\"glossaryLink\" href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/javascript\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">JavaScript<\/a> para ofrecer experiencias m&aacute;s din&aacute;micas y atractivas.<\/p>\n<p data-start=\"2519\" data-end=\"2689\" data-is-last-node=\"\" data-is-only-node=\"\">En resumen, <strong data-start=\"2531\" data-end=\"2688\"><a class=\"glossaryLink\" href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/javascript\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">JavaScript<\/a> es un lenguaje de programaci&oacute;n que permite agregar interactividad, dinamismo y funcionalidades avanzadas a sitios web y aplicaciones digitales<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><a class=\"glossaryLink\" href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/javascript\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">JavaScript<\/a> es un lenguaje de programaci&oacute;n utilizado principalmente para agregar interactividad y funcionalidad din&aacute;mica a sitios y aplicaciones web. Junto con <a class=\"glossaryLink\" href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/html\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">HTML<\/a> (estructura) y <a class=\"glossaryLink\" href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/css\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">CSS<\/a> (dise&ntilde;o), forma una de las tecnolog&iacute;as fundamentales del desarrollo web. &iquest;Para qu&eacute; sirve? Crear sitios web interactivos. Validar formularios. Mostrar animaciones. Actualizar contenido sin recargar la p&aacute;gina. Desarrollar aplicaciones web. &hellip; <a href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/javascript\/\" class=\"more-link\">Seguir leyendo <span class=\"screen-reader-text\"><a class=\"glossaryLink\" href=\"https:\/\/tecnologia.villanett.com\/index.php\/glosario\/javascript\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">Javascript<\/a><\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"menu_order":0,"template":"","meta":{"footnotes":""},"class_list":["post-401","glossary","type-glossary","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/tecnologia.villanett.com\/index.php\/wp-json\/wp\/v2\/glossary\/401","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tecnologia.villanett.com\/index.php\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/tecnologia.villanett.com\/index.php\/wp-json\/wp\/v2\/types\/glossary"}],"author":[{"embeddable":true,"href":"https:\/\/tecnologia.villanett.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"version-history":[{"count":2,"href":"https:\/\/tecnologia.villanett.com\/index.php\/wp-json\/wp\/v2\/glossary\/401\/revisions"}],"predecessor-version":[{"id":403,"href":"https:\/\/tecnologia.villanett.com\/index.php\/wp-json\/wp\/v2\/glossary\/401\/revisions\/403"}],"wp:attachment":[{"href":"https:\/\/tecnologia.villanett.com\/index.php\/wp-json\/wp\/v2\/media?parent=401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}