{"id":15454,"date":"2022-10-11T16:02:43","date_gmt":"2022-10-11T10:32:43","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-is-there-a-javascript-proposal-for-an-operator-to-apply-a-function-to-every-item-in-a-collection\/"},"modified":"2022-10-11T16:02:43","modified_gmt":"2022-10-11T10:32:43","slug":"solved-is-there-a-javascript-proposal-for-an-operator-to-apply-a-function-to-every-item-in-a-collection","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-is-there-a-javascript-proposal-for-an-operator-to-apply-a-function-to-every-item-in-a-collection\/","title":{"rendered":"[Solved] Is there a JavaScript proposal for an operator to apply a function to every item in a collection?"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-47835637\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"47835637\" data-parentid=\"47835383\" data-score=\"1\" 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 could take a combination of <\/p>\n<ul>\n<li>\n<p><a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/JavaScript\/Reference\/Global_Objects\/Object\/assign\"><code>Object.assign<\/code><\/a> for building a new object of single objects as parts,<\/p>\n<\/li>\n<li>\n<p><a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/JavaScript\/Reference\/Operators\/Spread_operator\">spread syntax <code>...<\/code><\/a> for taking an array as parameters,<\/p>\n<\/li>\n<li>\n<p><a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/JavaScript\/Reference\/Global_Objects\/Object\/entries\"><code>Object.entries<\/code><\/a> for getting an array with key\/value arrays,<\/p>\n<\/li>\n<li>\n<p><a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/JavaScript\/Reference\/Global_Objects\/Array\/map\"><code>Array#map<\/code><\/a> for doing the work with key and values,<\/p>\n<\/li>\n<li>\n<p><a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/JavaScript\/Reference\/Operators\/Destructuring_assignment\">destructuring assignment<\/a> for separating an array in key and value variables,<\/p>\n<\/li>\n<li>\n<p><a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/JavaScript\/Reference\/Operators\/Object_initializer#Computed_property_names\">computed property names<\/a> for getting a new object with a given key.<\/p>\n<\/li>\n<\/ul>\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>var object = { a: 1, b: 2 },\r\n    result = Object.assign(...Object.entries(object).map(([k, v]) =&gt; ({ [k]: v * 2 })));\r\n\r\nconsole.log(result);<\/code><\/pre>\n<\/div>\n<\/div><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">3<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved Is there a JavaScript proposal for an operator to apply a function to every item in a collection? <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] You could take a combination of Object.assign for building a new object of single objects as parts, spread syntax &#8230; for taking an array as parameters, Object.entries for getting an array with key\/value arrays, Array#map for doing the work with key and values, destructuring assignment for separating an array in key and value variables, &#8230; <a title=\"[Solved] Is there a JavaScript proposal for an operator to apply a function to every item in a collection?\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-is-there-a-javascript-proposal-for-an-operator-to-apply-a-function-to-every-item-in-a-collection\/\" aria-label=\"More on [Solved] Is there a JavaScript proposal for an operator to apply a function to every item in a collection?\">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-15454","post","type-post","status-publish","format-standard","hentry","category-solved","tag-javascript"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] Is there a JavaScript proposal for an operator to apply a function to every item in a collection? 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