{"id":14132,"date":"2021-07-01T16:24:34","date_gmt":"2021-07-01T14:24:34","guid":{"rendered":"https:\/\/www.software-developer-india.com\/5-node-js-eksempler\/"},"modified":"2021-07-04T09:35:52","modified_gmt":"2021-07-04T07:35:52","slug":"5-node-js-eksempler","status":"publish","type":"post","link":"https:\/\/www.software-developer-india.com\/da\/5-node-js-eksempler\/","title":{"rendered":"5 Node JS-eksempler"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">5 Node JS-eksempler<\/h2>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"https:\/\/www.software-developer-india.com\/wp-content\/uploads\/2018\/02\/Node-JS.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"575\" height=\"268\" src=\"https:\/\/www.software-developer-india.com\/wp-content\/uploads\/2018\/02\/Node-JS.jpg\" alt=\"\" class=\"wp-image-3066\" srcset=\"https:\/\/www.software-developer-india.com\/wp-content\/uploads\/2018\/02\/Node-JS.jpg 575w, https:\/\/www.software-developer-india.com\/wp-content\/uploads\/2018\/02\/Node-JS-300x140.jpg 300w\" sizes=\"auto, (max-width: 575px) 100vw, 575px\" \/><\/a><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><br>Da Node.js f\u00f8rst kom ind i teknologiverden, blev det bare t\u00e6nkt som en hipsterteknologi. Det blev lanceret som en open source-serverside Javascript milj\u00f8baseret teknologi p\u00e5 V8 JS-motoren og fundet i Google Chrome.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Flere og flere virksomheder begyndte at anvende denne teknologi, og til sidst blev det det f\u00f8rste valg for mange virksomheder, herunder for mange af disse h\u00f8jtrafikprojekter med h\u00f8j profil. Denne open source-serverramme er perfekt til webapplikationer, der kr\u00e6ver chatmotor eller team-samarbejde.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Her er nogle grunde til, at udviklere foretr\u00e6kker at bruge dette JS-runtime-milj\u00f8:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Det er utroligt hurtigt<\/strong> &#8211; Da rammen bruger JavaScript i backend, kan udviklere let forst\u00e5, hvor hurtigt koderne udf\u00f8res. Da den k\u00f8rer p\u00e5 V8-motoren, kan de ogs\u00e5 kompilere JS direkte i maskinkoden. Dette g\u00f8r det hurtigt.<\/li><li><strong>Det kan skaleres godt<\/strong> &#8211; Rammen giver dig mulighed for at oprette API&#8217;er. Det giver dig ogs\u00e5 mulighed for at h\u00e5ndtere mange I \/ O-drevne anmodninger.<\/li><li><strong>Rum og frihed<\/strong> &#8211; Node.js er helt uopfattet, og det giver dig frihed og plads til at g\u00f8re efter dit \u00f8nske. Det p\u00e5l\u00e6gger ingen begr\u00e6nsninger og er installeret som et minimum, s\u00e5 du kan manipulere det i henhold til kravet.<\/li><li><strong>Webapps i realtid<\/strong> &#8211; Rammen er udstyret med en h\u00e6ndelsesdrevet arkitektur. Dette er grunden til, at du kan oprette chatapplikationer i din app, og ogs\u00e5 grunden til, at det er godt at oprette spilapps. N\u00e5r b\u00e5de serversiden og klientsiden er skrevet i JS, g\u00e5r alt problemfrit, og der er total synkronisering.<\/li><li><strong>Det er selvf\u00f8lgelig meget let at l\u00e6re<\/strong> &#8211; Da Javascript er et universelt sprog, er n\u00e6sten alle udviklere fortrolige med dets arbejde. Det giver dig ogs\u00e5 mulighed for at skifte til Node.js med mindre indsats. Selv en junior Javascript-programm\u00f8r kan let finde vej.<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>De popul\u00e6re rammer<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Node.js skinner virkelig i afdelingen for full-stack rammer. Disse MVC-rammer er samlet med persistensbiblioteker, stilladser, websokkel, skabelonmotor og meget mere for at hj\u00e6lpe dig med at oprette skalerbare webapps i realtid.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Her er nogle af de mest bem\u00e6rkelsesv\u00e6rdige.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Express.js<\/strong> &#8211; Dette er en virkelig vigtig ramme for Node.js, fordi det var denne ramme, der tog udviklingsrammen til det n\u00e6ste niveau.<\/li><li><strong>Hapi.js<\/strong> &#8211; L\u00f8sningen til udviklere, n\u00e5r de vil bygge meningsfulde applikationer af h\u00f8j kvalitet. Det er meget stabilt og sikkert og perfekt til implementering af applikationer korrekt.<\/li><li><strong>Mojito.js<\/strong> &#8211; En bem\u00e6rkelsesv\u00e6rdig ramme, som du gerne vil have, n\u00e5r du udvikler h\u00f8j ydeevne og standard cross-platform app. Det kan k\u00f8re p\u00e5 b\u00e5de serversiden og klientsiden.<\/li><li><strong>Meteor Node.js<\/strong> &#8211; Hvis dit m\u00e5l er at oprette og udvikle web- og mobilapplikationer, is\u00e6r realtidsapps til dine kunder, ville dette v\u00e6re et godt valg.<\/li><li><strong>Socket.io<\/strong> &#8211; Dette er en ramme, hvor du kan oprette webapplikationer i realtid og tillader begivenhedsdrevet interaktion mellem en browser og node.js.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Eksemplerne<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1) Trello<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tello er et ber\u00f8mt samarbejdsv\u00e6rkt\u00f8j, som du kan bruge til at organisere dit projekt i forskellige tavler, s\u00e5 folk beliggende i forskellige dele af kloden kan v\u00e6re en del af det. Det vil lade alle teammedlemmerne deltage i et projekt, selvom de ikke er fysisk til stede p\u00e5 kontoret. \u00c6ndringer foretaget i Trello n\u00e5r folk, der lytter ind p\u00e5 de relevante kanaler.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Virksomheden bruger en modificeret version af Socket. io klient- og serverbiblioteker og g\u00f8r det muligt at beholde flere tusinder af \u00e5bne websockets p\u00e5 deres servere og derved spare hukommelse og omkostninger (med hensyn til CPU-brug). N\u00e5r et medlem foretager \u00e6ndringer i projektet, reflekteres dette over i serverprocesserne og derefter udbredes til den browser, du bruger. Alt dette sker normalt inden for f\u00e5 sekunder og med meget minimal ventetid.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2) Walmart<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Websteder som Walmart, det enorme, amerikanske multinationale detailsamarbejde, bruger Hapi.js til at vedligeholde sit websted. Virksomhedens investering i rammen har v\u00e6ret et meget dyrt skridt, da det er open source, men de har deres grunde til at bruge dette. De \u00f8nskede en ramme, der g\u00f8r det muligt for udviklere at koncentrere sig om at skrive genanvendelig applikationslogik, s\u00e5 de ikke beh\u00f8ver at bruge tid p\u00e5 at bygge infrastruktur.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">De foretrak en l\u00f8sning, der ville hj\u00e6lpe dem med at forbedre deres koder, s\u00e5 de passer til deres behov. Det er ogs\u00e5 nyttigt, n\u00e5r du har brug for et helt samfund af udviklere til vedligeholdelse af koden, og dette fjerner byrden fra de udviklere, der faktisk skrev koden. Paypal bruger ogs\u00e5 denne ramme.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3) MySpace<\/strong><\/h3>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"https:\/\/www.software-developer-india.com\/wp-content\/uploads\/2018\/02\/Myspace-.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"267\" src=\"https:\/\/www.software-developer-india.com\/wp-content\/uploads\/2018\/02\/Myspace-.jpg\" alt=\"\" class=\"wp-image-3067\" srcset=\"https:\/\/www.software-developer-india.com\/wp-content\/uploads\/2018\/02\/Myspace-.jpg 500w, https:\/\/www.software-developer-india.com\/wp-content\/uploads\/2018\/02\/Myspace--300x160.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><br>MySpace er et socialt netv\u00e6rkswebsted, der lader brugere oprette websider for at interagere med andre brugere. Mange sociale data g\u00e5r hver dag gennem dette websted.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Med dets funktioner som indholdsforhandling, dynamiske visningshj\u00e6lpere, visningsindstillinger p\u00e5 applikationsniveau, milj\u00f8baseret konfiguration, robust routing. Denne ramme har allerede skaleret nye h\u00f8jder, hvilket g\u00f8r det til et oplagt valg for MySpace. Hjemmesiden er allerede blevet et komplekst sted, hvor folk kan dele musik, bestille billetter til shows eller film og meget mere.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>4) Uber<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Uber, ride delingsplatformen var en k\u00e6mpe succes lige fra starten. Som du ved, afh\u00e6nger virksomheden st\u00e6rkt af funktionaliteten p\u00e5 sit websted, fordi deres m\u00e5l var at g\u00f8re transport tilg\u00e6ngelig for alle, overalt.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Det utrolige matchende system, som Uber har bygget, k\u00f8rer p\u00e5 dette rammemilj\u00f8. At v\u00e6re en open source-server-side-teknologi, er der ikke underligt, hvorfor det har v\u00e6ret i stand til at f\u00f8lge med de skiftende krav p\u00e5 et \u00f8jeblik.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>5) Microsoft<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Et andet stort navn i den tekniske industri, Microsoft bruger denne udviklingsramme og tilbyder direkte integrationer i Azure. Microsoft har v\u00e6ret s\u00e5 tilfreds med Node.js, at virksomheden har besluttet at bygge sin egen version og drive den med Edge Javascript-motor i stedet for V8.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Afsluttende tanker<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Node.js er hurtigt ved at blive et af de mest popul\u00e6re sprog til udvikling af webapplikationer, og mange mellemstore og store virksomheder bruger det allerede med succes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Skalerbarhedsfunktionen i rammen giver en ikke-blokerende I \/ O API, og dette hj\u00e6lper ogs\u00e5 med applikationens kapacitet. Kommandoer, der udf\u00f8res parallelt, Event Loop, synkron og intensiv operation tilf\u00f8jer medf\u00f8dte muligheder i dette runtime-milj\u00f8.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Interessante artikler:<br><a href=\"https:\/\/blog.risingstack.com\/node-js-examples-how-enterprises-use-node-in-2016\/\">Node JS og dens anvendelse.<\/a><br><a href=\"https:\/\/thinkmobiles.com\/blog\/node-js-app-examples\/\">Anvendelser af node JS <\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Flickr.com \/ Outsider.ne.kr \/ Marcus<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"alignleft\"><img decoding=\"async\" src=\"https:\/\/www.software-developer-india.com\/wp-content\/uploads\/2015\/03\/2.png\" alt=\"\" class=\"wp-image-229\"\/><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Forfatteren: Reema Oamkumar er engageret som en tankeleder p\u00e5 www.Software-Developer-India.com, som er en del af YUHIRO Group. 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Det blev lanceret som en open source-serverside Javascript &#8230; <a title=\"5 Node JS-eksempler\" class=\"read-more\" href=\"https:\/\/www.software-developer-india.com\/da\/5-node-js-eksempler\/\" aria-label=\"Read more about 5 Node JS-eksempler\">L\u00e6s Mere<\/a><\/p>\n","protected":false},"author":6,"featured_media":9058,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[220],"tags":[],"class_list":["post-14132","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-web-udvikling"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Da Node.js f\u00f8rst kom ind i teknologiverden, blev det bare t\u00e6nkt som en hipsterteknologi. 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