{"id":27055,"date":"2022-12-22T02:50:06","date_gmt":"2022-12-21T21:20:06","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-javascript-delete-elements-from-array-of-objects-that-are-not-present-in-another-array-of-objects\/"},"modified":"2022-12-22T02:50:06","modified_gmt":"2022-12-21T21:20:06","slug":"solved-javascript-delete-elements-from-array-of-objects-that-are-not-present-in-another-array-of-objects","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-javascript-delete-elements-from-array-of-objects-that-are-not-present-in-another-array-of-objects\/","title":{"rendered":"[Solved] javascript delete elements from array of objects that are not present in another array of objects"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-51498635\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"51498635\" data-parentid=\"51498201\" data-score=\"0\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>You can use <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/JavaScript\/Reference\/Global_Objects\/Array\/map#Syntax\"><code>map<\/code><\/a> to walk arr2 and use <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/developer.mozilla.org\/fr\/docs\/Web\/JavaScript\/Reference\/Objets_globaux\/Array\/find\"><code>find<\/code><\/a> to get the matching element.<\/p>\n<p><a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/tio.run\/##VZC9DoIwEIBn@xS3AYmWgBumGkcddHA0DhWqKSktKcWfEJ4dLRWC06XX@@6@u5w@aJVqXpqFVBnrulTJygDVOgIC52aXJRDN4UALlniGVcZr59Bn42k29toLGtG4Rx9U1FNo8l7aciSYAcmeW63p@0tYEBe09F9A1tCgmevHDSvcb4RvXGa@uua24BuwFQBCCLxw3z1AM81MraWjNi4k0IA1lrUQP@kBgBa1wQr16kowLNTd35@OB1wZzeWd397@YBgECIWhc5pY\/58I\/m\/kJrrFYdx81XUf\" title=\"JavaScript (Node.js) \u2013 Try It Online\">Try it online!<\/a><\/p>\n<pre><code>const arr1 = [{Id: 1, Name:'test'}, {Id: 2, Name:'test2'}]\nconst arr2 = [{value:'test'}, {value:'test3'}]\n\nconst newArray = arr2.map(x =&gt; {\n    \/\/ we search for the matching element.\n    const item = arr1.find(obj =&gt; obj.Name === x.value)\n    \/\/ if item exists get item, else create a new one\n    return item ? item : { Id: null, Name: x.value }\n});\nconsole.log(JSON.stringify(newArray))\n<\/code><\/pre>\n<p>output<\/p>\n<pre><code>[{\"Id\":1,\"Name\":\"test\"},{\"Id\":null,\"Name\":\"test3\"}]\n<\/code><\/pre>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">1<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved javascript delete elements from array of objects that are not present in another array of objects <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] You can use map to walk arr2 and use find to get the matching element. Try it online! const arr1 = [{Id: 1, Name:&#8217;test&#8217;}, {Id: 2, Name:&#8217;test2&#8242;}] const arr2 = [{value:&#8217;test&#8217;}, {value:&#8217;test3&#8242;}] const newArray = arr2.map(x =&gt; { \/\/ we search for the matching element. const item = arr1.find(obj =&gt; obj.Name === x.value) \/\/ &#8230; <a title=\"[Solved] javascript delete elements from array of objects that are not present in another array of objects\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-javascript-delete-elements-from-array-of-objects-that-are-not-present-in-another-array-of-objects\/\" aria-label=\"More on [Solved] javascript delete elements from array of objects that are not present in another array of objects\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[333],"class_list":["post-27055","post","type-post","status-publish","format-standard","hentry","category-solved","tag-javascript"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>[Solved] javascript delete elements from array of objects that are not present in another array of objects - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-javascript-delete-elements-from-array-of-objects-that-are-not-present-in-another-array-of-objects\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] javascript delete elements from array of objects that are not present in another array of objects - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] You can use map to walk arr2 and use find to get the matching element. Try it online! const arr1 = [{Id: 1, Name:&#039;test&#039;}, {Id: 2, Name:&#039;test2&#039;}] const arr2 = [{value:&#039;test&#039;}, {value:&#039;test3&#039;}] const newArray = arr2.map(x =&gt; { \/\/ we search for the matching element. const item = arr1.find(obj =&gt; obj.Name === x.value) \/\/ ... 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Try it online! const arr1 = [{Id: 1, Name:'test'}, {Id: 2, Name:'test2'}] const arr2 = [{value:'test'}, {value:'test3'}] const newArray = arr2.map(x =&gt; { \/\/ we search for the matching element. const item = arr1.find(obj =&gt; obj.Name === x.value) \/\/ ... Read more","og_url":"https:\/\/jassweb.com\/solved\/solved-javascript-delete-elements-from-array-of-objects-that-are-not-present-in-another-array-of-objects\/","og_site_name":"JassWeb","article_published_time":"2022-12-21T21:20:06+00:00","author":"Kirat","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Kirat","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/jassweb.com\/solved\/solved-javascript-delete-elements-from-array-of-objects-that-are-not-present-in-another-array-of-objects\/#article","isPartOf":{"@id":"https:\/\/jassweb.com\/solved\/solved-javascript-delete-elements-from-array-of-objects-that-are-not-present-in-another-array-of-objects\/"},"author":{"name":"Kirat","@id":"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31"},"headline":"[Solved] javascript delete elements from array of objects that are not present in another array of objects","datePublished":"2022-12-21T21:20:06+00:00","mainEntityOfPage":{"@id":"https:\/\/jassweb.com\/solved\/solved-javascript-delete-elements-from-array-of-objects-that-are-not-present-in-another-array-of-objects\/"},"wordCount":53,"publisher":{"@id":"https:\/\/jassweb.com\/solved\/#organization"},"keywords":["javascript"],"articleSection":["Solved"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/jassweb.com\/solved\/solved-javascript-delete-elements-from-array-of-objects-that-are-not-present-in-another-array-of-objects\/","url":"https:\/\/jassweb.com\/solved\/solved-javascript-delete-elements-from-array-of-objects-that-are-not-present-in-another-array-of-objects\/","name":"[Solved] javascript delete elements from array of objects that are not present in another array of objects - 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