{"id":16486,"date":"2024-12-04T21:50:15","date_gmt":"2024-12-04T18:20:15","guid":{"rendered":"https:\/\/www.itpiran.net\/blog\/?p=16486"},"modified":"2024-12-04T21:50:15","modified_gmt":"2024-12-04T18:20:15","slug":"es5-vs-es6-in-javascript-14-big-changes","status":"publish","type":"post","link":"https:\/\/www.itpiran.net\/blog\/es\/tutorials\/es5-vs-es6-in-javascript-14-big-changes\/","title":{"rendered":"14 grandes cambios entre ES5 y ES6 en JavaScript"},"content":{"rendered":"<h2 id=\"%d9%85%d9%82%d8%af%d9%85%d9%87\">Introducci\u00f3n<\/h2>\n<p>ES5 y ES6 se refieren a diferentes versiones del est\u00e1ndar ECMAScript, una especificaci\u00f3n de lenguaje de scripting que sirve de base para varios lenguajes, incluyendo JavaScript. La evoluci\u00f3n de ES5 a ES6 (tambi\u00e9n conocido como ECMAScript 2015) trajo consigo numerosos cambios y mejoras. A continuaci\u00f3n, se presenta una comparaci\u00f3n entre ambos:<\/p>\n<h2 id=\"let-1-%d9%88-const-%d8%aa%d8%b9%d8%b1%db%8c%d9%81-%d9%85%d8%aa%d8%ba%db%8c%d8%b1%d9%87%d8%a7\">sea .1 y const (declarando variables)<\/h2>\n<p><strong>ES5:<\/strong> La forma principal de definir variables es utilizar <code inline=\"\">variedad<\/code> Fue.<br \/>\n<strong>ES6:<\/strong> Introducci\u00f3n <code inline=\"\">dejar<\/code> Para definir variables basadas en bloques y <code inline=\"\">constante<\/code> Para definir variables constantes basadas en bloques.<\/p>\n<h2 id=\"2-%d8%a7%d9%84%da%af%d9%88%d9%87%d8%a7%db%8c-%d8%b1%d8%b4%d8%aa%d9%87%d8%a7%db%8c-template-literals\">2. Literales de plantilla<\/h2>\n<p><strong>ES5:<\/strong> Cadenas que utilizan <code inline=\"\">+<\/code> Estaban conectados.<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>var name = \"John\";\r\nvar greeting = \"Hello, \" + name + \"!\";<\/code><\/pre>\n<\/div>\n<p><strong>ES6:<\/strong> Se introdujeron patrones de cuerdas.<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code> let name = \"John\";\r\nlet greeting = `Hello, ${name}!`;<\/code><\/pre>\n<\/div>\n<h2 id=\"arrow-functions-3\">Funciones de flecha .3<\/h2>\n<p><strong>ES5<\/strong>:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code> function(x) {\r\nreturn x * x;\r\n}<\/code><\/pre>\n<\/div>\n<p><strong>ES6:<\/strong> Se introdujeron las funciones de flecha, que proporcionan una notaci\u00f3n m\u00e1s corta para escribir funciones.<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code> x =&gt; x * x;\r\n<\/code><\/pre>\n<\/div>\n<h2 id=\"4-%da%a9%d9%84%d8%a7%d8%b3%d9%87%d8%a7-classes\">4. Clases<\/h2>\n<p><strong>ES5:<\/strong> Se utiliz\u00f3 la herencia protot\u00edpica para simular el comportamiento de las clases.<br \/>\n<strong>ES6:<\/strong> Palabra clave <code inline=\"\">clase<\/code> Fue introducido para la programaci\u00f3n orientada a objetos.<\/p>\n<h2 id=\"5-%d8%a8%d9%87%d8%a8%d9%88%d8%af-%d8%af%d8%b1-%d9%86%da%af%d8%a7%d8%b1%d8%b4-%d8%a7%d8%b4%db%8c%d8%a7%d8%a1-enhanced-object-literals\">5. Literales de objeto mejorados<\/h2>\n<p><strong>ES5:<\/strong> Los objetos se definieron mediante pares clave-valor.<br \/>\n<strong>ES6:<\/strong> Proporciona una notaci\u00f3n m\u00e1s corta para definir objetos.<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code> let name = \"John\";\r\nlet obj = {name}; \/\/ Equivalent to {name: name}<\/code><\/pre>\n<\/div>\n<h2 id=\"6-%d8%aa%d8%ac%d8%b2%db%8c%d9%87%d8%b3%d8%a7%d8%b2%db%8c-destructuring\">6. Desestructuraci\u00f3n<\/h2>\n<p><strong>ES5:<\/strong> No hab\u00eda un m\u00e9todo directo.<br \/>\n<strong>ES6:<\/strong> Ahora es posible extraer m\u00faltiples propiedades de un objeto o matriz de una manera m\u00e1s concisa.<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>let person = { firstName: \"John\", lastName: \"Doe\" };\r\nlet { firstName, lastName } = person;<\/code><\/pre>\n<\/div>\n<h2 id=\"7-%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1-%d9%be%db%8c%d8%b4%d9%81%d8%b1%d8%b6%d8%8c-rest-%d9%88-spread\">7. Valores predeterminados, Rest y Spread<\/h2>\n<p><strong>ES5<\/strong><strong>:<\/strong> La gesti\u00f3n de valores predeterminados, de reposo o de spread se realizaba de forma manual.<br \/>\n<strong>ES6:<\/strong> Valores predeterminados para los par\u00e1metros de funci\u00f3n, par\u00e1metro <code inline=\"\">...descansar<\/code> Para recopilar argumentos y operadores <code inline=\"\">...desparramar<\/code> Introducido para expandir una matriz o un objeto.<\/p>\n<h2 id=\"8-%d9%85%d8%a7%da%98%d9%88%d9%84%d9%87%d8%a7-modules\">8. M\u00f3dulos<\/h2>\n<p><strong>ES5:<\/strong> No exist\u00eda un sistema de m\u00f3dulos nativo. Los desarrolladores utilizaban soluciones de terceros como CommonJS o AMD.<br \/>\n<strong>ES6:<\/strong> Sistema de m\u00f3dulos nativos que utiliza <code inline=\"\">importar<\/code> y <code inline=\"\">exportar<\/code> Introducido.<\/p>\n<h2 id=\"9-%d9%88%d8%b9%d8%af%d9%87%d9%87%d8%a7-promises\">9. Promesas<\/h2>\n<p><strong>ES5:<\/strong> Se utilizaron devoluciones de llamadas para operaciones asincr\u00f3nicas.<br \/>\n<strong>ES6:<\/strong> Se introdujeron promesas para gestionar operaciones asincr\u00f3nicas de una manera m\u00e1s estructurada.<\/p>\n<h2 id=\"10-%d8%ad%d9%84%d9%82%d9%87-for-of\">10. bucle for-of<\/h2>\n<p><strong>ES5:<\/strong> Para iterar sobre matrices, utilice bucles. <code inline=\"\">para<\/code> O <code inline=\"\">para cada uno<\/code> Fue utilizado.<br \/>\n<strong>ES6:<\/strong> Anillo <code inline=\"\">para-de<\/code> Se introdujo para iterar sobre objetos iterables.<\/p>\n<h2 id=\"set%d8%8c-map%d8%8c-weakset%d8%8c-weakmap-11\">Conjunto, Mapa, Conjunto D\u00e9bil, MapaD\u00e9bil 11<\/h2>\n<p><strong>ES5:<\/strong> No hubo equivalente directo.<br \/>\n<strong>ES6:<\/strong> Este tipo de colecciones se introdujeron para la gesti\u00f3n de datos.<\/p>\n<h2 id=\"12-%d9%86%d9%88%d8%b9-symbol\">12. Tipo de s\u00edmbolo<\/h2>\n<p><strong>ES5:<\/strong> No exist\u00eda tal cosa.<br \/>\n<strong>ES6:<\/strong> Tipo <code inline=\"\">S\u00edmbolo<\/code> Introducido para crear identificadores \u00fanicos.<\/p>\n<h2 id=\"13-%d8%b1%d9%88%d8%b4%d9%87%d8%a7%db%8c-%d8%a2%d8%b1%d8%a7%db%8c%d9%87-%d9%88-%d8%b4%db%8c%d8%a1\">13. M\u00e9todos de matriz y objeto<\/h2>\n<p><strong>ES5:<\/strong> Un conjunto limitado de m\u00e9todos.<br \/>\n<strong>ES6:<\/strong> Nuevos m\u00e9todos como <code inline=\"\">Matriz.de<\/code>, <code inline=\"\">Matriz de<\/code>, <code inline=\"\">Objeto.asignar<\/code> Y se introdujeron muchos otros.<\/p>\n<h2 id=\"14-%d9%85%d8%af%db%8c%d8%b1%db%8c%d8%aa-%d9%be%d8%a7%d8%b1%d8%a7%d9%85%d8%aa%d8%b1%d9%87%d8%a7\">14. Gesti\u00f3n de par\u00e1metros<\/h2>\n<p><strong>ES5:<\/strong> Par\u00e1metros que utilizan objetos <code inline=\"\">argumentos<\/code> Se concedi\u00f3 el acceso.<br \/>\n<strong>ES6:<\/strong> Soporte directo para la gesti\u00f3n de par\u00e1metros mediante <code inline=\"\">descansar<\/code>, <code inline=\"\">por defecto<\/code> y <code inline=\"\">desparramar<\/code>.<\/p>\n<h2 id=\"%d9%86%d8%aa%db%8c%d8%ac%d9%87\">Resultado<\/h2>\n<p>Esta es una comparaci\u00f3n de alto nivel. La transici\u00f3n de ES5 a ES6 trajo consigo numerosos cambios y mejoras que enriqueceron considerablemente el lenguaje JavaScript. Con el tiempo, versiones posteriores (como ES7\/ES2016 y posteriores) a\u00f1adieron m\u00e1s funciones al lenguaje.<\/p>","protected":false},"excerpt":{"rendered":"Introducci\u00f3n ES5 y ES6 hacen referencia a diferentes versiones del est\u00e1ndar ECMAScript, que es una especificaci\u00f3n del lenguaje de scripting y\u2026","protected":false},"author":1,"featured_media":16489,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"\u064dEs5 \u062f\u0631 \u0645\u0642\u0627\u0628\u0644 Es6","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","_yoast_wpseo_canonical":"","_yoast_wpseo_opengraph-description":"","_yoast_wpseo_opengraph-image":"","_yoast_wpseo_twitter-description":"","_yoast_wpseo_twitter-image":"","_yoast_wpseo_focuskeywords":"[]","_yoast_wpseo_primary_category":"193","footnotes":""},"categories":[193,363],"tags":[384],"class_list":{"0":"post-16486","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-tutorials","8":"category-programming","9":"tag-java-script"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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