{"id":50845,"date":"2020-02-01T07:00:36","date_gmt":"2020-02-01T06:00:36","guid":{"rendered":"http:\/\/smeupnew.it\/magazine\/blog\/web-component-vantaggio\/"},"modified":"2021-04-06T16:43:15","modified_gmt":"2021-04-06T14:43:15","slug":"web-component-vantaggio","status":"publish","type":"post","link":"https:\/\/www.smeup.com\/magazine\/blog\/web-component-vantaggio\/","title":{"rendered":"Rinnovamento User Interface parte 3 : il vantaggio dei Web Component"},"content":{"rendered":"

I web component<\/strong> sono una tecnologia emergente che si basa su una specifica web definita gi\u00e0 dal 2011 dal W3C, ovvero dal World Wide Web Consortium<\/a> . In base a tale specifica si possono scrivere componenti custom in puro codice html, css e javascript utilizzabili in qualsiasi applicazione. Avevamo gi\u00e0 parlato di questo argomento nelle puntate precedenti: te le sei perse? Recupera subito la puntata 1<\/a> e la puntata 2<\/a>.<\/p>\n

Ritornando ai componenti web, un esempio chiaro pu\u00f2 essere il web component google-map creato da Google. Inserendo il tag custom <google-map\/> con gli attributi latitudine e longitudine nell’html della propria applicazione si visualizza automaticamente una mappa di Google.<\/p>\n

<google-map latitude=\u201d45.8529825\u2033 longitude=\u201d9.3900705\u2033><\/google-map><\/strong><\/p>\n

Tutto quanto serve per costruire il web component \u00e8 incapsulato in un DOM <\/strong>(l\u2019albero degli oggetti della pagina html) protetto chiamato Shadow DOM<\/strong>, in maniera tale che il codice del web component non interferisca con l’applicazione web o il framework di appartenenza.<\/p>\n

I Web Component sono tag html a tutti gli effetti, quindi possono avere attributi, emettere eventi, contenere elementi figli, etc… Sono concettualmente uguali ad esempio al tag <video> di html5, con l’unica differenza che il codice del componente custom pu\u00f2 essere messo a disposizione da chiunque voglia scriverlo.<\/p>\n

<video width=”320″ height=”240″ controls>
\n<\/strong>\u00a0 \u00a0<source src=”movie.mp4″ type=”video\/mp4″>
\n<\/strong>\u00a0 \u00a0<source src=”movie.ogg” type=”video\/ogg”>
\n<\/strong>\u00a0 \u00a0Your browser does not support the video tag.
\n<\/strong><\/video><\/strong><\/p>\n

Si comprende chiaramente il vantaggio dei web component rispetto all’utilizzo di un framework specifico come pu\u00f2 essere Angular, Vue o React nella scrittura di componenti riutilizzabili. Un web component pu\u00f2 essere integrato in qualsiasi applicazione, sia in un’applicazione scritta in puro html, css e javascript, che in un’applicazione Angular o React o Vue.<\/p>\n

La tecnologia di questi componenti \u00e8 considerata da alcuni il futuro del web. A differenza dei framework javascript quali Angular, React e Vue non \u00e8 per\u00f2 ancora vastamente diffusa. Una delle ragioni principali \u00e8 che nonostante le specifiche siano disponibili da anni, non tutti i browser ancora le supportano. Esistono comunque delle librerie definite di polyfill <\/strong>che simulano il supporto nativo, permettendo quindi di utilizzare i componenti web su tutti i browser.<\/p>\n

E\u2019 comunque da sottolineare che la tecnologia dei web component \u00e8 adatta a scrivere componenti ma non applicazioni web. Per la realizzazione di applicazioni web moderne (le cosiddette spa<\/strong>, ovvero single page application<\/strong>) sono indicati i framework javascript moderni, che forniscono facilitazioni aggiuntive, come il supporto agli sviluppatori nell\u2019orchestrazione dei componenti web, nella gestione delle url, nella gestione dello stato dell\u2019applicazione\u2026<\/p>\n","protected":false},"excerpt":{"rendered":"

I web component sono una tecnologia che si basa su una specifica web definita, in base a cui si possono scrivere componenti custom utilizzabili in qualsiasi applicazione. Vediamo quali sono i vantaggi del loro utilizzo per il rinnovamento delle user interface.<\/p>\n","protected":false},"author":1,"featured_media":53217,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7175],"tags":[6581,6548,6566],"class_list":["post-50845","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ux","tag-librerie-di-componenti","tag-user-interface","tag-web-components"],"acf":[],"yoast_head":"\nRinnovamento User Interface parte 3 : il vantaggio dei Web Component<\/title>\n<meta name=\"description\" content=\"Web component sono una tecnologia basata su una specifica web definita, in base a cui si possono scrivere componenti custom.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.smeup.com\/magazine\/blog\/web-component-vantaggio\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Rinnovamento User Interface parte 3 : il vantaggio dei Web Component\" \/>\n<meta property=\"og:description\" content=\"Web component sono una tecnologia basata su una specifica web definita, in base a cui si possono scrivere componenti custom.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.smeup.com\/magazine\/blog\/web-component-vantaggio\/\" \/>\n<meta property=\"og:site_name\" content=\"Magazine\" \/>\n<meta property=\"article:published_time\" content=\"2020-02-01T06:00:36+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-04-06T14:43:15+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.smeup.com\/magazine\/wp-content\/uploads\/sites\/5\/2020\/02\/web-components-vantaggio.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"1125\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"smeup\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Scritto da\" \/>\n\t<meta name=\"twitter:data1\" content=\"smeup\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo di lettura stimato\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minuti\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/blog\\\/web-component-vantaggio\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/blog\\\/web-component-vantaggio\\\/\"},\"author\":{\"name\":\"smeup\",\"@id\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/#\\\/schema\\\/person\\\/194a55d96e7e52223a84ff78468bf5c7\"},\"headline\":\"Rinnovamento User Interface parte 3 : il vantaggio dei Web Component\",\"datePublished\":\"2020-02-01T06:00:36+00:00\",\"dateModified\":\"2021-04-06T14:43:15+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/blog\\\/web-component-vantaggio\\\/\"},\"wordCount\":441,\"commentCount\":0,\"image\":{\"@id\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/blog\\\/web-component-vantaggio\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/wp-content\\\/uploads\\\/sites\\\/5\\\/2020\\\/02\\\/web-components-vantaggio.jpg\",\"keywords\":[\"librerie di componenti\",\"user interface\",\"web components\"],\"articleSection\":[\"UX\"],\"inLanguage\":\"it-IT\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/blog\\\/web-component-vantaggio\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/blog\\\/web-component-vantaggio\\\/\",\"url\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/blog\\\/web-component-vantaggio\\\/\",\"name\":\"Rinnovamento User Interface parte 3 : il vantaggio dei Web Component\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/blog\\\/web-component-vantaggio\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/blog\\\/web-component-vantaggio\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/wp-content\\\/uploads\\\/sites\\\/5\\\/2020\\\/02\\\/web-components-vantaggio.jpg\",\"datePublished\":\"2020-02-01T06:00:36+00:00\",\"dateModified\":\"2021-04-06T14:43:15+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/#\\\/schema\\\/person\\\/194a55d96e7e52223a84ff78468bf5c7\"},\"description\":\"Web component sono una tecnologia basata su una specifica web definita, in base a cui si possono scrivere componenti custom.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/blog\\\/web-component-vantaggio\\\/#breadcrumb\"},\"inLanguage\":\"it-IT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/blog\\\/web-component-vantaggio\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"it-IT\",\"@id\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/blog\\\/web-component-vantaggio\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/wp-content\\\/uploads\\\/sites\\\/5\\\/2020\\\/02\\\/web-components-vantaggio.jpg\",\"contentUrl\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/wp-content\\\/uploads\\\/sites\\\/5\\\/2020\\\/02\\\/web-components-vantaggio.jpg\",\"width\":1600,\"height\":1125,\"caption\":\"smeup web component\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/blog\\\/web-component-vantaggio\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Rinnovamento User Interface parte 3 : il vantaggio dei Web Component\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/#website\",\"url\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/\",\"name\":\"Magazine\",\"description\":\"smeup\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"it-IT\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/#\\\/schema\\\/person\\\/194a55d96e7e52223a84ff78468bf5c7\",\"name\":\"smeup\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"it-IT\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/a88cc3ad6c0af01768fe2ac47c88a321699d97ced53c173f66ceaa51400f43ca?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/a88cc3ad6c0af01768fe2ac47c88a321699d97ced53c173f66ceaa51400f43ca?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/a88cc3ad6c0af01768fe2ac47c88a321699d97ced53c173f66ceaa51400f43ca?s=96&d=mm&r=g\",\"caption\":\"smeup\"},\"sameAs\":[\"https:\\\/\\\/www.smeup.com\"],\"url\":\"https:\\\/\\\/www.smeup.com\\\/magazine\\\/blog\\\/author\\\/admin\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Rinnovamento User Interface parte 3 : il vantaggio dei Web Component","description":"Web component sono una tecnologia basata su una specifica web definita, in base a cui si possono scrivere componenti custom.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.smeup.com\/magazine\/blog\/web-component-vantaggio\/","og_locale":"it_IT","og_type":"article","og_title":"Rinnovamento User Interface parte 3 : il vantaggio dei Web Component","og_description":"Web component sono una tecnologia basata su una specifica web definita, in base a cui si possono scrivere componenti custom.","og_url":"https:\/\/www.smeup.com\/magazine\/blog\/web-component-vantaggio\/","og_site_name":"Magazine","article_published_time":"2020-02-01T06:00:36+00:00","article_modified_time":"2021-04-06T14:43:15+00:00","og_image":[{"width":1600,"height":1125,"url":"https:\/\/www.smeup.com\/magazine\/wp-content\/uploads\/sites\/5\/2020\/02\/web-components-vantaggio.jpg","type":"image\/jpeg"}],"author":"smeup","twitter_card":"summary_large_image","twitter_misc":{"Scritto da":"smeup","Tempo di lettura stimato":"2 minuti"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.smeup.com\/magazine\/blog\/web-component-vantaggio\/#article","isPartOf":{"@id":"https:\/\/www.smeup.com\/magazine\/blog\/web-component-vantaggio\/"},"author":{"name":"smeup","@id":"https:\/\/www.smeup.com\/magazine\/#\/schema\/person\/194a55d96e7e52223a84ff78468bf5c7"},"headline":"Rinnovamento User Interface parte 3 : il vantaggio dei Web Component","datePublished":"2020-02-01T06:00:36+00:00","dateModified":"2021-04-06T14:43:15+00:00","mainEntityOfPage":{"@id":"https:\/\/www.smeup.com\/magazine\/blog\/web-component-vantaggio\/"},"wordCount":441,"commentCount":0,"image":{"@id":"https:\/\/www.smeup.com\/magazine\/blog\/web-component-vantaggio\/#primaryimage"},"thumbnailUrl":"https:\/\/www.smeup.com\/magazine\/wp-content\/uploads\/sites\/5\/2020\/02\/web-components-vantaggio.jpg","keywords":["librerie di componenti","user interface","web components"],"articleSection":["UX"],"inLanguage":"it-IT","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.smeup.com\/magazine\/blog\/web-component-vantaggio\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.smeup.com\/magazine\/blog\/web-component-vantaggio\/","url":"https:\/\/www.smeup.com\/magazine\/blog\/web-component-vantaggio\/","name":"Rinnovamento User Interface parte 3 : il vantaggio dei Web Component","isPartOf":{"@id":"https:\/\/www.smeup.com\/magazine\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.smeup.com\/magazine\/blog\/web-component-vantaggio\/#primaryimage"},"image":{"@id":"https:\/\/www.smeup.com\/magazine\/blog\/web-component-vantaggio\/#primaryimage"},"thumbnailUrl":"https:\/\/www.smeup.com\/magazine\/wp-content\/uploads\/sites\/5\/2020\/02\/web-components-vantaggio.jpg","datePublished":"2020-02-01T06:00:36+00:00","dateModified":"2021-04-06T14:43:15+00:00","author":{"@id":"https:\/\/www.smeup.com\/magazine\/#\/schema\/person\/194a55d96e7e52223a84ff78468bf5c7"},"description":"Web component sono una tecnologia basata su una specifica web definita, in base a cui si possono scrivere componenti custom.","breadcrumb":{"@id":"https:\/\/www.smeup.com\/magazine\/blog\/web-component-vantaggio\/#breadcrumb"},"inLanguage":"it-IT","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.smeup.com\/magazine\/blog\/web-component-vantaggio\/"]}]},{"@type":"ImageObject","inLanguage":"it-IT","@id":"https:\/\/www.smeup.com\/magazine\/blog\/web-component-vantaggio\/#primaryimage","url":"https:\/\/www.smeup.com\/magazine\/wp-content\/uploads\/sites\/5\/2020\/02\/web-components-vantaggio.jpg","contentUrl":"https:\/\/www.smeup.com\/magazine\/wp-content\/uploads\/sites\/5\/2020\/02\/web-components-vantaggio.jpg","width":1600,"height":1125,"caption":"smeup web component"},{"@type":"BreadcrumbList","@id":"https:\/\/www.smeup.com\/magazine\/blog\/web-component-vantaggio\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.smeup.com\/magazine\/"},{"@type":"ListItem","position":2,"name":"Rinnovamento User Interface parte 3 : il vantaggio dei Web Component"}]},{"@type":"WebSite","@id":"https:\/\/www.smeup.com\/magazine\/#website","url":"https:\/\/www.smeup.com\/magazine\/","name":"Magazine","description":"smeup","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.smeup.com\/magazine\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"it-IT"},{"@type":"Person","@id":"https:\/\/www.smeup.com\/magazine\/#\/schema\/person\/194a55d96e7e52223a84ff78468bf5c7","name":"smeup","image":{"@type":"ImageObject","inLanguage":"it-IT","@id":"https:\/\/secure.gravatar.com\/avatar\/a88cc3ad6c0af01768fe2ac47c88a321699d97ced53c173f66ceaa51400f43ca?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/a88cc3ad6c0af01768fe2ac47c88a321699d97ced53c173f66ceaa51400f43ca?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/a88cc3ad6c0af01768fe2ac47c88a321699d97ced53c173f66ceaa51400f43ca?s=96&d=mm&r=g","caption":"smeup"},"sameAs":["https:\/\/www.smeup.com"],"url":"https:\/\/www.smeup.com\/magazine\/blog\/author\/admin\/"}]}},"_links":{"self":[{"href":"https:\/\/www.smeup.com\/magazine\/wp-json\/wp\/v2\/posts\/50845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.smeup.com\/magazine\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.smeup.com\/magazine\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.smeup.com\/magazine\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.smeup.com\/magazine\/wp-json\/wp\/v2\/comments?post=50845"}],"version-history":[{"count":2,"href":"https:\/\/www.smeup.com\/magazine\/wp-json\/wp\/v2\/posts\/50845\/revisions"}],"predecessor-version":[{"id":53219,"href":"https:\/\/www.smeup.com\/magazine\/wp-json\/wp\/v2\/posts\/50845\/revisions\/53219"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.smeup.com\/magazine\/wp-json\/wp\/v2\/media\/53217"}],"wp:attachment":[{"href":"https:\/\/www.smeup.com\/magazine\/wp-json\/wp\/v2\/media?parent=50845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.smeup.com\/magazine\/wp-json\/wp\/v2\/categories?post=50845"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.smeup.com\/magazine\/wp-json\/wp\/v2\/tags?post=50845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}