{"id":4114,"date":"2021-03-05T13:00:00","date_gmt":"2021-03-05T12:00:00","guid":{"rendered":"https:\/\/carontestudio.com\/blog\/?p=4114"},"modified":"2023-10-30T10:59:47","modified_gmt":"2023-10-30T09:59:47","slug":"que-es-javascript-y-para-que-sirve-en-2021","status":"publish","type":"post","link":"https:\/\/carontestudio.com\/blog\/que-es-javascript-y-para-que-sirve-en-2021\/","title":{"rendered":"\u00bfQu\u00e9 es JavaScript y para qu\u00e9 sirve en 2021?"},"content":{"rendered":"\n<p>Seguramente hayas escuchado muchas veces el t\u00e9rmino JavaScript, ya que es uno de los lenguajes de programaci\u00f3n m\u00e1s importantes de la web. Sin embargo, es posible que desconozcas todas las funcionalidades que tiene JavaScript hoy en d\u00eda. Es por ello que en este art\u00edculo te explicamos <strong>qu\u00e9 es JavaScript y para qu\u00e9 sirve en 2021<\/strong>, ya que sus utilidades son infinitas. <\/p>\n\n\n\n<p>\u00a1Empecemos!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Qu\u00e9 es JavaScript<\/h2>\n\n\n\n<p>Los lenguajes de programaci\u00f3n web se pueden diferenciar entre <strong>los que se ejecutan en la parte del cliente (lenguajes frontend) y los que se ejecutan en la parte del servidor (lenguajes backend)<\/strong>.  Ya hablamos sobre este tema en nuestro art\u00edculo \u00ab<a href=\"https:\/\/carontestudio.com\/blog\/diferencia-entre-frontend-y-backend\/\">Diferencia entre frontend y backend<\/a>\u00ab. \u00a1Te lo recomiendo!<\/p>\n\n\n\n<p>Pues bien, <strong>JavaScript es el lenguaje de programaci\u00f3n web del lado del cliente por excelencia<\/strong>. De hecho, a d\u00eda de hoy es el s\u00e9ptimo lenguaje de programaci\u00f3n m\u00e1s utilizado del mundo, seg\u00fan el <a href=\"https:\/\/www.tiobe.com\/tiobe-index\/\">\u00cdndice Tiobe<\/a>, referencia en la medici\u00f3n del uso de los lenguajes de programaci\u00f3n. <\/p>\n\n\n\n<p>Por lo tanto, JavaScript es un lenguaje de programaci\u00f3n que se ejecuta en el navegador web del usuario,<strong> cuyo objetivo es dotar a los sitios web de interactividad<\/strong>. A continuaci\u00f3n veremos m\u00e1s detalladamente todos los usos de JavaScript y para qu\u00e9 sirve en 2021. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Para qu\u00e9 sirve JavaScript<\/h2>\n\n\n\n<p>Tradicionalmente JavaScript ha sido empleado para crear efectos y animaciones en la web. Sin embargo, con el paso del tiempo, ha vivido un gran desarrollo y sus funcionalidades se han ampliado enormemente. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">JavaScript como respuesta a eventos<\/h3>\n\n\n\n<p>Actualmente <strong>el uso m\u00e1s com\u00fan de JavaScript es la programaci\u00f3n de respuestas a eventos en un sitio web<\/strong>. Los eventos son interacciones del usuario con una p\u00e1gina web, como podr\u00edan ser movimientos de rat\u00f3n, clics, env\u00edo de formularios, scrolls, etc. <\/p>\n\n\n\n<p>Pues bien, el uso principal de JavaScript es captar dichos eventos y definir una reacci\u00f3n. Si quieres ver una demostraci\u00f3n pr\u00e1ctica te recomiendo nuestro art\u00edculo \u00ab<a href=\"https:\/\/carontestudio.com\/blog\/anadir-tema-oscuro-css-javascript\/\">C\u00f3mo a\u00f1adir un tema oscuro con CSS y JavaScript<\/a>\u00ab, donde te explicamos c\u00f3mo a\u00f1adir un bot\u00f3n a tu web que cambie su tema de claro a oscuro. <\/p>\n\n\n\n<p>Es por ello que se dice que <strong>el objetivo principal de JavaScript es dotar a los sitios web de interactividad<\/strong>. Porque permite que las p\u00e1ginas web reaccionen ante la actividad del usuario. <\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"426\" src=\"https:\/\/carontestudio.com\/blog\/wp-content\/uploads\/2021\/03\/javascript-programacion-frontend.jpg\" alt=\"Programaci\u00f3n de eventos JavaScript\" class=\"wp-image-4164\" srcset=\"https:\/\/carontestudio.com\/blog\/wp-content\/uploads\/2021\/03\/javascript-programacion-frontend.jpg 640w, https:\/\/carontestudio.com\/blog\/wp-content\/uploads\/2021\/03\/javascript-programacion-frontend-300x200.jpg 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">JavaScript para el desarrollo Backend con Node.js<\/h3>\n\n\n\n<p>Node.js es un entorno software multiplataforma para la ejecuci\u00f3n de JavaScript. Es decir, <strong>es un entorno que permite ejecutar JavaScript en diferentes plataformas, como servidores, m\u00f3viles o escritorio<\/strong>. <\/p>\n\n\n\n<p>Su uso m\u00e1s com\u00fan es la ejecuci\u00f3n de JavaScript en un servidor web. <strong>Node.js tiene una gran capacidad para soportar un gran n\u00famero de conexiones<\/strong> simult\u00e1neas a un servidor, debido a que las trata de forma as\u00edncrona. Debido a sus caracter\u00edsticas, <strong>JavaScript<\/strong> se adapta perfectamente a este funcionamiento, por lo que<strong> se convierte en una excelente opci\u00f3n para el desarrollo backend<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">JavaScript para apps con React Native<\/h3>\n\n\n\n<p><strong>React Native es un framework de c\u00f3digo abierto <\/strong>lanzado por Facebook que permite el desarrollo de aplicaciones m\u00f3viles programadas en JavaScript. <\/p>\n\n\n\n<p>Sus or\u00edgenes se encuentran en la librer\u00eda de JavaScript React, creada por el propio Facebook en 2011. Unos a\u00f1os despu\u00e9s, en 2015, naci\u00f3 React Native con el objetivo de hacer posible la <strong>programaci\u00f3n de apps m\u00f3viles mediante JavaScript<\/strong>.<\/p>\n\n\n\n<p>De esta manera, hoy en d\u00eda JavaScript sirve para crear aplicaciones para las plataformas de Android y iOS, es decir, se est\u00e1 convirtiendo en <strong>un lenguaje multiplataforma<\/strong>. <\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"426\" src=\"https:\/\/carontestudio.com\/blog\/wp-content\/uploads\/2021\/03\/javascript-apps-moviles.jpg\" alt=\"Desarrollo de aplicaciones m\u00f3viles con React Native\" class=\"wp-image-4166\" srcset=\"https:\/\/carontestudio.com\/blog\/wp-content\/uploads\/2021\/03\/javascript-apps-moviles.jpg 640w, https:\/\/carontestudio.com\/blog\/wp-content\/uploads\/2021\/03\/javascript-apps-moviles-300x200.jpg 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Aplicaciones MEAN Stack<\/h3>\n\n\n\n<p>Gracias al impresionante desarrollo vivido por JavaScript, ha surgido un conjunto de tecnolog\u00edas conocido como MEAN Stack. MEAN es un acr\u00f3nimo de MongoDB, ExpressJS, AngularJS y NodeJS. <\/p>\n\n\n\n<p>Este conjunto de tecnolog\u00edas representa<strong> un ecosistema para crear aplicaciones web basado \u00fanicamente en JavaScript<\/strong>. <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>MongoDB<\/strong> es un gestor de bases de datos <a href=\"https:\/\/blogs.oracle.com\/spain\/qu-es-una-base-de-datos-nosql\">NoSQL<\/a> que emplea la notaci\u00f3n JSON (JavaScript Object Notation).<\/li><li><strong>NodeJS<\/strong> es la plataforma que controla la ejecuci\u00f3n en el servidor y est\u00e1 completamente basada en JavaScript. <\/li><li><strong>ExpressJs<\/strong> es un m\u00f3dulo de NodeJS que permite gestionar, mediante JavaScript, las peticiones que recibe el servidor. <\/li><li><strong>AngularJS<\/strong> es un framework empleado para elaborar toda la estructura visual de la web mediante JavaScript, es decir, para trabajar la parte frontend.<\/li><\/ul>\n\n\n\n<p>Gracias a la interrelaci\u00f3n de estas tecnolog\u00edas, es posible crear aplicaciones empleando \u00fanicamente el lenguaje de programaci\u00f3n JavaScript. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u00bfQu\u00e9 es y para qu\u00e9 sirve JavaScript en 2021? Conclusiones<\/h2>\n\n\n\n<p>JavaScript es uno de los lenguajes m\u00e1s importantes que existen. Aunque su campo de aplicaci\u00f3n principal es la programaci\u00f3n web del lado del cliente, sus campos de uso est\u00e1n creciendo enormemente. Entre ellos, como hemos visto, se encuentra el desarrollo backend y el desarrollo de aplicaciones m\u00f3viles. <\/p>\n\n\n\n<p>De esta manera, podemos ver que JavaScript se est\u00e1 convirtiendo en un lenguaje multiprop\u00f3sito y multiplataforma y que su futuro es realmente prometedor. <\/p>\n\n\n\n<p>Espero que este art\u00edculo te haya servido para comprender qu\u00e9 es JavaScript y para qu\u00e9 sirve hoy en d\u00eda. No dudes en dejarme un comentario en esta publicaci\u00f3n. <\/p>\n\n\n\n<p>\u00a1Te espero en el siguiente art\u00edculo!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Seguramente hayas escuchado muchas veces el t\u00e9rmino JavaScript, ya que es uno de los lenguajes de programaci\u00f3n m\u00e1s importantes de la web. Sin embargo, es posible que desconozcas todas las funcionalidades que tiene JavaScript hoy en d\u00eda, ya que sus utilidades son infinitas. <\/p>\n","protected":false},"author":21,"featured_media":4190,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[50],"tags":[],"class_list":["post-4114","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-programacion-web"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u00bfQu\u00e9 es JavaScript y para qu\u00e9 sirve en 2021? - Blog Caronte Web Studio<\/title>\n<meta name=\"description\" content=\"\u00bfQuieres saber qu\u00e9 es JavaScript y para qu\u00e9 sirve en 2021? 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