{"id":275,"date":"2017-09-08T12:12:00","date_gmt":"2017-09-08T10:12:00","guid":{"rendered":"https:\/\/celilsemi.erkiner.com\/blog\/?p=275"},"modified":"2020-05-28T12:22:52","modified_gmt":"2020-05-28T10:22:52","slug":"services-in-angular","status":"publish","type":"post","link":"https:\/\/celilsemi.erkiner.com\/blog\/services-in-angular\/","title":{"rendered":"Services in Angular"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">What is a Service?<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">A service is typically a class with a narrow, well-defined purpose. Angular provides flexibility to factor your application logic into services and make those services available to components through dependency injection. Service classes are decorated with @Injectable() decorator to show they can be injected to some other services or components.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">What is dependency injection?<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Dependency Injection (DI) is a way to create objects that depend upon other objects. A Dependency Injection system supplies the dependent objects (called the dependencies) when it creates an instance of an object.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">What is @Injectable?<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">The @Injectable decorator identifies services and other classes that are intended to be injected. It can also be used to configure a provider for those services. It is basically a marker metadata that marks a class as available to Injector for creation.<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre class=\"CodeMirror\" data-setting=\"{&quot;showPanel&quot;:false,&quot;languageLabel&quot;:false,&quot;fullScreenButton&quot;:true,&quot;copyButton&quot;:true,&quot;mode&quot;:&quot;javascript&quot;,&quot;mime&quot;:&quot;application\/typescript&quot;,&quot;theme&quot;:&quot;material&quot;,&quot;lineNumbers&quot;:false,&quot;styleActiveLine&quot;:false,&quot;lineWrapping&quot;:true,&quot;readOnly&quot;:true,&quot;fileName&quot;:&quot;&quot;,&quot;language&quot;:&quot;TypeScript&quot;,&quot;maxHeight&quot;:&quot;400px&quot;,&quot;modeName&quot;:&quot;typescript&quot;}\">import { Injectable } from '@angular\/core';\n\n@Injectable()\nexport class AngularService {\n  constructor() { }\n}<\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"<p>What is a Service? 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What","twitter:image":"https:\/\/celilsemi.erkiner.com\/blog\/wp-content\/uploads\/2020\/05\/appicon.png"},"aioseo_meta_data":{"post_id":"275","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"breadcrumb_settings":null,"limit_modified_date":false,"ai":null,"created":"2023-11-14 19:47:18","updated":"2025-07-29 06:55:30","focus_keyword":null,"additional_keywords":null,"truseo_locale":null,"seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/celilsemi.erkiner.com\/blog\/\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">\u00bb<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/celilsemi.erkiner.com\/blog\/category\/engineering\/\" title=\"Engineering\">Engineering<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">\u00bb<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/celilsemi.erkiner.com\/blog\/category\/engineering\/software\/\" title=\"Software Engineering\">Software Engineering<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">\u00bb<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/celilsemi.erkiner.com\/blog\/category\/engineering\/software\/front-end\/\" title=\"Front End Engineering\">Front End Engineering<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">\u00bb<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tServices in Angular\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/celilsemi.erkiner.com\/blog\/"},{"label":"Engineering","link":"https:\/\/celilsemi.erkiner.com\/blog\/category\/engineering\/"},{"label":"Software Engineering","link":"https:\/\/celilsemi.erkiner.com\/blog\/category\/engineering\/software\/"},{"label":"Front End Engineering","link":"https:\/\/celilsemi.erkiner.com\/blog\/category\/engineering\/software\/front-end\/"},{"label":"Services in Angular","link":"https:\/\/celilsemi.erkiner.com\/blog\/services-in-angular\/"}],"_links":{"self":[{"href":"https:\/\/celilsemi.erkiner.com\/blog\/wp-json\/wp\/v2\/posts\/275","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/celilsemi.erkiner.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/celilsemi.erkiner.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/celilsemi.erkiner.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/celilsemi.erkiner.com\/blog\/wp-json\/wp\/v2\/comments?post=275"}],"version-history":[{"count":1,"href":"https:\/\/celilsemi.erkiner.com\/blog\/wp-json\/wp\/v2\/posts\/275\/revisions"}],"predecessor-version":[{"id":276,"href":"https:\/\/celilsemi.erkiner.com\/blog\/wp-json\/wp\/v2\/posts\/275\/revisions\/276"}],"wp:attachment":[{"href":"https:\/\/celilsemi.erkiner.com\/blog\/wp-json\/wp\/v2\/media?parent=275"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/celilsemi.erkiner.com\/blog\/wp-json\/wp\/v2\/categories?post=275"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/celilsemi.erkiner.com\/blog\/wp-json\/wp\/v2\/tags?post=275"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}