{"id":17515,"date":"2022-10-25T06:21:39","date_gmt":"2022-10-25T00:51:39","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-how-to-add-object-in-nested-array-of-objects-without-mutating-original-source\/"},"modified":"2022-10-25T06:21:39","modified_gmt":"2022-10-25T00:51:39","slug":"solved-how-to-add-object-in-nested-array-of-objects-without-mutating-original-source","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-how-to-add-object-in-nested-array-of-objects-without-mutating-original-source\/","title":{"rendered":"[Solved] how to add object in nested array of objects without mutating original source"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-72388124\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"72388124\" data-parentid=\"72386597\" 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>Use <code>Array.prototype.map<\/code> instead, <code>forEach<\/code> gets no returns<\/p>\n<\/p>\n<div class=\"snippet\" data-lang=\"js\" data-hide=\"false\" data-console=\"true\" data-babel=\"false\">\n<div class=\"snippet-code\">\n<pre class=\"snippet-code-js lang-js prettyprint-override\"><code>let newobj = [\n  {\n    id: 22,\n    reason: 'reason 2',\n    phase: 'phase 2',\n    reviewer: 'by user 2',\n    date: 'date 2'\n  },\n  {\n    id: 21,\n    reason: 'reason 1',\n    phase: 'phase 1',\n    reviewer: 'by user 1',\n    date: 'date 1'\n  }\n];\n\nlet arr1 = {\n  initiateLevel: true,\n  parent: [\n    {\n      name: 'level1',\n      childrens: [\n        {\n          group: 'Level-group',\n          grandChildrens: [\n            {\n              id: 21,\n              technology: 'sp1',\n              path: 'l2',\n              reason: 'reason 1',\n              phase: 'phase 1',\n              reviewer: 'by user 1',\n              date: 'date 1'\n            },\n            {\n              id: 22,\n              technology: 'sp2',\n              path: 'l2',\n              reason: 'reason 2',\n              phase: 'phase 2',\n              reviewer: 'by user 2',\n              date: 'date 2'\n            }\n          ]\n        }\n      ]\n    },\n    {\n      name: 'level2',\n      childrens: [\n        {\n          group: 'Level-group-2',\n          grandChildrens: [\n            {\n              id: 121,\n              technology: 'sp12',\n              path: 'l4'\n            },\n            {\n              id: 122,\n              technology: 'sp22',\n              path: 'l4'\n            }\n          ]\n        }\n      ]\n    }\n  ]\n};\n\nconst merge = (y, z) =&gt; {\n  const parent = y.parent.map((element) =&gt; {\n    return { \n      ...element, \n      childrens: element.childrens.map((x) =&gt; {\n        return {\n          ...x,\n          grandChildrens: x.grandChildrens.map((test) =&gt; {\n            return { ...test, ...z.find((reviewItem) =&gt; reviewItem.id === test.id) };\n           })\n         };\n       })\n     }\n  });\n  return { ...y, parent }; \n};\n\nconst arr2 = merge(arr1, newobj);\nconsole.log(arr2);<\/code><\/pre>\n<\/div>\n<\/div><\/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 how to add object in nested array of objects without mutating original source <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] Use Array.prototype.map instead, forEach gets no returns let newobj = [ { id: 22, reason: &#8216;reason 2&#8217;, phase: &#8216;phase 2&#8217;, reviewer: &#8216;by user 2&#8217;, date: &#8216;date 2&#8217; }, { id: 21, reason: &#8216;reason 1&#8217;, phase: &#8216;phase 1&#8217;, reviewer: &#8216;by user 1&#8217;, date: &#8216;date 1&#8217; } ]; let arr1 = { initiateLevel: true, parent: [ &#8230; <a title=\"[Solved] how to add object in nested array of objects without mutating original source\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-how-to-add-object-in-nested-array-of-objects-without-mutating-original-source\/\" aria-label=\"More on [Solved] how to add object in nested array of objects without mutating original source\">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":[361,333,356,430],"class_list":["post-17515","post","type-post","status-publish","format-standard","hentry","category-solved","tag-arrays","tag-javascript","tag-json","tag-object"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>[Solved] how to add object in nested array of objects without mutating original source - 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-how-to-add-object-in-nested-array-of-objects-without-mutating-original-source\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] how to add object in nested array of objects without mutating original source - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Use Array.prototype.map instead, forEach gets no returns let newobj = [ { id: 22, reason: &#039;reason 2&#039;, phase: &#039;phase 2&#039;, reviewer: &#039;by user 2&#039;, date: &#039;date 2&#039; }, { id: 21, reason: &#039;reason 1&#039;, phase: &#039;phase 1&#039;, reviewer: &#039;by user 1&#039;, date: &#039;date 1&#039; } ]; let arr1 = { initiateLevel: true, parent: [ ... 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