{"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\/de\/tutorials\/es5-vs-es6-in-javascript-14-big-changes\/","title":{"rendered":"14 gro\u00dfe \u00c4nderungen zwischen ES5 und ES6 in JavaScript"},"content":{"rendered":"<h2 id=\"%d9%85%d9%82%d8%af%d9%85%d9%87\">Einf\u00fchrung<\/h2>\n<p>ES5 und ES6 bezeichnen unterschiedliche Versionen des ECMAScript-Standards, einer Spezifikation f\u00fcr Skriptsprachen, die als Grundlage f\u00fcr verschiedene Sprachen, darunter JavaScript, dient. Die Weiterentwicklung von ES5 zu ES6 (auch bekannt als ECMAScript 2015) brachte zahlreiche \u00c4nderungen und Verbesserungen mit sich. Hier ein Vergleich der beiden Versionen:<\/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\">let .1 and const (Variablen deklarieren)<\/h2>\n<p><strong>ES5:<\/strong> Die wichtigste Methode zur Definition von Variablen ist die Verwendung von <code inline=\"\">var<\/code> Es war.<br \/>\n<strong>ES6:<\/strong> Einf\u00fchrung <code inline=\"\">lassen<\/code> Um blockbasierte Variablen zu definieren und <code inline=\"\">Konstante<\/code> Um blockbasierte konstante Variablen zu definieren.<\/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. Template-Literale<\/h2>\n<p><strong>ES5:<\/strong> Zeichenketten verwenden <code inline=\"\">+<\/code> Sie waren miteinander verbunden.<\/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> Stringmuster wurden eingef\u00fchrt.<\/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\">Pfeilfunktionen .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> Es wurden Pfeilfunktionen eingef\u00fchrt, die eine k\u00fcrzere Notation zum Schreiben von Funktionen erm\u00f6glichen.<\/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. Klassen<\/h2>\n<p><strong>ES5:<\/strong> Die prototypische Vererbung wurde verwendet, um das Verhalten von Klassen zu simulieren.<br \/>\n<strong>ES6:<\/strong> Stichwort <code inline=\"\">Klasse<\/code> Es wurde f\u00fcr die objektorientierte Programmierung eingef\u00fchrt.<\/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. Erweiterte Objektliterale<\/h2>\n<p><strong>ES5:<\/strong> Objekte wurden durch Schl\u00fcssel-Wert-Paare definiert.<br \/>\n<strong>ES6:<\/strong> Bietet eine k\u00fcrzere Notation zur Definition von Objekten.<\/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. Destrukturierung<\/h2>\n<p><strong>ES5:<\/strong> Es gab keine direkte Methode.<br \/>\n<strong>ES6:<\/strong> Es ist nun m\u00f6glich, mehrere Eigenschaften aus einem Objekt oder Array auf pr\u00e4gnantere Weise zu extrahieren.<\/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. Standardwerte, Rest und Spread<\/h2>\n<p><strong>ES5<\/strong><strong>:<\/strong> Die Verwaltung von Standard-, Rest- oder Streuwerten erfolgte manuell.<br \/>\n<strong>ES6:<\/strong> Standardwerte f\u00fcr Funktionsparameter, Parameter <code inline=\"\">...ausruhen<\/code> Um Argumente und Operatoren zu sammeln <code inline=\"\">...verbreiten<\/code> Eingef\u00fchrt, um ein Array oder Objekt zu erweitern.<\/p>\n<h2 id=\"8-%d9%85%d8%a7%da%98%d9%88%d9%84%d9%87%d8%a7-modules\">8. Module<\/h2>\n<p><strong>ES5:<\/strong> Es gab kein natives Modulsystem. Entwickler nutzten Drittanbieterl\u00f6sungen wie CommonJS oder AMD.<br \/>\n<strong>ES6:<\/strong> Native Modulsystem-Nutzung <code inline=\"\">Import<\/code> Und <code inline=\"\">Export<\/code> Eingef\u00fchrt.<\/p>\n<h2 id=\"9-%d9%88%d8%b9%d8%af%d9%87%d9%87%d8%a7-promises\">9. Versprechen<\/h2>\n<p><strong>ES5:<\/strong> F\u00fcr asynchrone Operationen wurden R\u00fcckruffunktionen verwendet.<br \/>\n<strong>ES6:<\/strong> Promises wurden eingef\u00fchrt, um asynchrone Operationen strukturierter zu verwalten.<\/p>\n<h2 id=\"10-%d8%ad%d9%84%d9%82%d9%87-for-of\">10. for-of-Schleife<\/h2>\n<p><strong>ES5:<\/strong> Um Arrays zu durchlaufen, verwendet man Schleifen. <code inline=\"\">f\u00fcr<\/code> Oder <code inline=\"\">f\u00fcr jedes<\/code> Es wurde benutzt.<br \/>\n<strong>ES6:<\/strong> Ring <code inline=\"\">f\u00fcr<\/code> Es wurde eingef\u00fchrt, um \u00fcber iterierbare Objekte zu iterieren.<\/p>\n<h2 id=\"set%d8%8c-map%d8%8c-weakset%d8%8c-weakmap-11\">Set, Map, WeakSet, WeakMap 11<\/h2>\n<p><strong>ES5:<\/strong> Es gab kein direktes \u00c4quivalent.<br \/>\n<strong>ES6:<\/strong> Diese Art von Sammlungen wurde f\u00fcr das Datenmanagement eingef\u00fchrt.<\/p>\n<h2 id=\"12-%d9%86%d9%88%d8%b9-symbol\">12. Symboltyp<\/h2>\n<p><strong>ES5:<\/strong> So etwas gab es nicht.<br \/>\n<strong>ES6:<\/strong> Typ <code inline=\"\">Symbol<\/code> Eingef\u00fchrt, um eindeutige Kennungen zu erstellen.<\/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. Array- und Objektmethoden<\/h2>\n<p><strong>ES5:<\/strong> Eine begrenzte Anzahl von Methoden.<br \/>\n<strong>ES6:<\/strong> Neue Methoden wie <code inline=\"\">Array.from<\/code>, <code inline=\"\">Array.of<\/code>, <code inline=\"\">Objekt.Zuweisung<\/code> Und viele weitere wurden eingef\u00fchrt.<\/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. Parameterverwaltung<\/h2>\n<p><strong>ES5:<\/strong> Parameter \u00fcber Objekt <code inline=\"\">Argumente<\/code> Der Zugriff wurde gew\u00e4hrt.<br \/>\n<strong>ES6:<\/strong> Direkte Unterst\u00fctzung f\u00fcr die Parameterverwaltung mittels <code inline=\"\">ausruhen<\/code>, <code inline=\"\">Standard<\/code> Und <code inline=\"\">verbreiten<\/code>.<\/p>\n<h2 id=\"%d9%86%d8%aa%db%8c%d8%ac%d9%87\">Ergebnis<\/h2>\n<p>Dies ist ein allgemeiner Vergleich. Der \u00dcbergang von ES5 zu ES6 brachte viele \u00c4nderungen und Verbesserungen mit sich, die JavaScript deutlich umfangreicher machten. Im Laufe der Zeit f\u00fcgten nachfolgende Versionen (wie ES7\/ES2016 und sp\u00e4tere) der Sprache weitere Funktionen hinzu.<\/p>","protected":false},"excerpt":{"rendered":"Einleitung: ES5 und ES6 bezeichnen unterschiedliche Versionen des ECMAScript-Standards, einer Spezifikation f\u00fcr eine Skriptsprache\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 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