{"id":709,"date":"2024-07-30T20:22:40","date_gmt":"2024-07-30T18:22:40","guid":{"rendered":"https:\/\/blog.sutilweb.eu\/?page_id=709"},"modified":"2024-07-30T20:22:40","modified_gmt":"2024-07-30T18:22:40","slug":"004-operador-de-cortocircuito","status":"publish","type":"page","link":"https:\/\/sutilweb.eu\/index.php\/lenguajes\/javascript\/javascript-practico\/06-objetos-y-funciones-del-lenguaje\/004-operador-de-cortocircuito\/","title":{"rendered":"004. Operador de cortocircuito"},"content":{"rendered":"\n

En este cap\u00edtulo vamos a ver un conjunto de operadores bastante importante, y que nos encontraremos a lo largo de nuestro aprendizaje con Javascript<\/strong>. Los operadores de cortocircuito<\/strong> funcionan poniendo dos condiciones, ya sea utilizando el operador l\u00f3gico OR (||) o el operador l\u00f3gico AND (&&).<\/p>\n\n\n\n\n\n\n\n

Cortocircuito con OR (||)<\/h2>\n\n\n\n

Cuando el valor de la izquierda en la expresi\u00f3n siempre pueda validar a true<\/em><\/strong>, es el valor que se cargar\u00e1 por defecto.<\/p>\n\n\n\n

Cortocircuito con AND (&&)<\/h2>\n\n\n\n

Cuando el valor de la izquierda en la expresi\u00f3n siempre pueda validar a false<\/em><\/strong>, es el valor que se cargar\u00e1 por defecto.<\/p>\n\n\n\n

Ejm<\/strong><\/p>\n\n\n\n

<!DOCTYPE html>\n<html lang=\"es\">\n  <head>\n    <meta charset=\"UTF-8\" \/>\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" \/>\n    <title>Operador de cortocircuito<\/title>\n  <\/head>\n\n  <body>\n    <h1>Operador de cortocircuito<\/h1>\n\n    <script>\n      function saludar(nombre) {\n        nombre = nombre || \"Desconocido\";\n        console.log(`Hola ${nombre}`);\n      }\n\n      saludar(\"Francisco\");\n      saludar();\n\n      \/\/ Cortocircuito con OR\n\n      \/\/ Valores que tienden a verdadero\n      console.log(\"Cadena\" || \"Valor de la derecha\");\n      console.log(51 || \"Valor de la derecha\");\n      console.log(true || \"Valor de la derecha\");\n      console.log([] || \"Valor de la derecha\");\n      console.log({} || \"Valor de la derecha\");\n\n      \/\/ Valores que tienden a falso\n      console.log(false || \"Valor de la derecha\");\n      console.log(null || \"Valor de la derecha\");\n      console.log(undefined || \"Valor de la derecha\");\n      console.log(NaN || \"Valor de la derecha\");\n      console.log(\"\" || \"Valor de la derecha\");\n      console.log(0 || \"Valor de la derecha\");\n\n      \/\/ Cortocircuito con AND\n      console.log(false && \"Valor de la derecha\");\n      console.log(undefined && \"Valor de la derecha\");\n      console.log(NaN && \"Valor de la derecha\");\n      console.log(null && \"Valor de la derecha\");\n    <\/script>\n  <\/body>\n<\/html><\/pre>\n","protected":false},"excerpt":{"rendered":"
En este cap\u00edtulo vamos a ver un conjunto de operadores bastante importante, y que nos encontraremos a lo largo de […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":697,"menu_order":3,"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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-709","page","type-page","status-publish","hentry"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false},"uagb_author_info":{"display_name":"Sutil Web","author_link":"https:\/\/sutilweb.eu\/index.php\/author\/sutilweb\/"},"uagb_comment_info":0,"uagb_excerpt":"En este cap\u00edtulo vamos a ver un conjunto de operadores bastante importante, y que nos encontraremos a lo largo de […]","_links":{"self":[{"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages\/709","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/comments?post=709"}],"version-history":[{"count":2,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages\/709\/revisions"}],"predecessor-version":[{"id":711,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages\/709\/revisions\/711"}],"up":[{"embeddable":true,"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/pages\/697"}],"wp:attachment":[{"href":"https:\/\/sutilweb.eu\/index.php\/wp-json\/wp\/v2\/media?parent=709"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}