{"id":102272,"date":"2021-11-12T09:36:39","date_gmt":"2021-11-12T07:36:39","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/web-frejmvork-pusa-perenosyashhij-logiku-javascript-frontenda-na-storonu-servera"},"modified":"2021-11-12T09:36:39","modified_gmt":"2021-11-12T07:36:39","slug":"web-frejmvork-pusa-perenosyashhij-logiku-javascript-frontenda-na-storonu-servera","status":"publish","type":"post","link":"https:\/\/prohoster.info\/de\/blog\/news\/web-frejmvork-pusa-perenosyashhij-logiku-javascript-frontenda-na-storonu-servera","title":{"rendered":"Das Web-Framework Pusa, das die Logik des JavaScript-Frontends auf die Serverseite \u00fcbertr\u00e4gt.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Das Web-Framework Pusa wurde ver\u00f6ffentlicht und implementiert ein Konzept, das die im Browser durch JavaScript ausgef\u00fchrte Frontend-Logik auf die Backend-Seite verlagert. Die Steuerung des Browsers und der DOM-Elemente sowie die Gesch\u00e4ftslogik werden im Backend ausgef\u00fchrt. Der im Browser ausgef\u00fchrte JavaScript-Code wird durch eine universelle Schicht ersetzt, die die im Backend befindlichen Handler aufruft. Eine Entwicklung mit JavaScript f\u00fcr das Frontend ist nicht erforderlich. Die Referenzimplementierung von Pusa ist in PHP geschrieben und unter der GPLv3-Lizenz verf\u00fcgbar. Neben PHP kann die Technologie auch in anderen Sprachen implementiert werden, einschlie\u00dflich JavaScript\/Node.js, Java, Python, Go und Ruby.      <\/p>\n<p>Pusa definiert ein Austauschprotokoll auf der Grundlage eines minimalistischen Befehlssatzes. Beim Laden der Seite l\u00e4dt der Browser den Basisinhalt des DOM und den JavaScript-Kern von Pusa-Front. Pusa-Front sendet \u00fcber Ajax-Requests die Ereignisse des Browsers (wie Klick, Verlassen, Fokus und Tastendruck) und die Anfrageparameter (das ausl\u00f6sende Element, seine Attribute, URL usw.) an den Server-Handler Pusa-Back. Aufgrund der erhaltenen Daten bestimmt Pusa-Back den Controller, f\u00fchrt die Nutzlast aus und erstellt einen Antwortbefehlssatz. Nach Erhalt der Anfrageantwort f\u00fchrt Pusa-Front die Befehle aus, um den DOM-Inhalt und die Browserumgebung zu \u00e4ndern.       <\/p>\n<p>Der Zustand des Frontends wird kreiert, aber nicht vom Backend kontrolliert, was die Entwicklung f\u00fcr Pusa \u00e4hnlich macht wie den Code f\u00fcr eine Grafikkarte oder Canvas, wo das Ergebnis der Ausf\u00fchrung nicht vom Entwickler kontrolliert wird. Um interaktive Anwendungen auf Basis von Canvas und onmousemove zu erstellen, besteht die M\u00f6glichkeit, zus\u00e4tzliche JavaScript-Skripte auf der Client-Seite zu laden und zu verwenden. Zu den Nachteilen dieser Methode geh\u00f6rt auch, dass ein Teil der Last vom Frontend auf das Backend verlagert wird und die Daten\u00fcbertragungsfrequenz erh\u00f6ht wird. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/de\/server\/dts-prohoster\/\"   title=\"Server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3024\">Server<\/a>.    <\/p>\n<p>Zu den Vorteilen z\u00e4hlen: der Ausschluss der Notwendigkeit, Frontend-JavaScript-Entwickler zu beteiligen, stabiler und kompakter Client-Code (11kB), Unzug\u00e4nglichkeit des Hauptcodes von der Frontend-Seite, keine Notwendigkeit zur Serialisierung von REST und zu Tools wie gRPC sowie der Ausschluss von Problemen der Koordination der Routenanfragen zwischen Frontend und Backend.<br \/>\n<br \/>Quelle: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56140\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d web-\u0444\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a Pusa \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u043a\u043e\u043d\u0446\u0435\u043f\u0446\u0438\u0438, \u043f\u0435\u0440\u0435\u043d\u043e\u0441\u044f\u0449\u0435\u0439 \u043b\u043e\u0433\u0438\u043a\u0443 \u0444\u0440\u043e\u043d\u0442\u044d\u043d\u0434\u0430, \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u043c\u0443\u044e \u0432 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0435 \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 JavaScript, \u043d\u0430 \u0441\u0442\u043e\u0440\u043e\u043d\u0443 \u0431\u044d\u043a\u0435\u043d\u0434\u0430 &#8212; \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u043e\u043c \u0438 DOM \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u0430\u043c\u0438, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0431\u0438\u0437\u043d\u0435\u0441\u043b\u043e\u0433\u0438\u043a\u0430 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u044e\u0442\u0441\u044f \u043d\u0430 \u0431\u044d\u043a\u0435\u043d\u0434\u0435. \u0412\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u043c\u044b\u0439 \u043d\u0430 \u0441\u0442\u043e\u0440\u043e\u043d\u0435 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430 JavaScript \u043a\u043e\u0434 \u0437\u0430\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \u043d\u0430 \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0430\u043b\u044c\u043d\u0443\u044e \u043f\u0440\u043e\u0441\u043b\u043e\u0439\u043a\u0443, \u0432\u044b\u0437\u044b\u0432\u0430\u044e\u0449\u0443\u044e \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438, \u043d\u0430\u0445\u043e\u0434\u044f\u0449\u0438\u0435\u0441\u044f \u043d\u0430 \u0441\u0442\u043e\u0440\u043e\u043d\u0435 \u0431\u044d\u043a\u0435\u043d\u0434\u0430. \u041d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e\u0441\u0442\u044c \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c JavaScript \u0434\u043b\u044f \u0444\u0440\u043e\u043d\u0442\u044d\u043d\u0434\u0430 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u0435\u0442. \u042d\u0442\u0430\u043b\u043e\u043d\u043d\u0430\u044f [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-102272","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - 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