{"id":108,"date":"2023-03-26T05:46:17","date_gmt":"2023-03-26T05:46:17","guid":{"rendered":"http:\/\/example.com\/?p=108"},"modified":"2023-03-26T05:46:17","modified_gmt":"2023-03-26T05:46:17","slug":"react-js-map-is-not-a-function","status":"publish","type":"post","link":"https:\/\/zahid.reviewexperto.com\/qyrhjg-react-js-map-is-not-a-function-zvntji\/","title":{"rendered":"React Js Map Is Not A Function"},"content":{"rendered":"<div class=\"69e31f6dd6281c7fc5e0fed8b94c5eb9\" data-index=\"1\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script type=\"text\/javascript\">\r\n\tatOptions = {\r\n\t\t'key' : 'a7db306710b44b2f2aed24478cf86126',\r\n\t\t'format' : 'iframe',\r\n\t\t'height' : 250,\r\n\t\t'width' : 300,\r\n\t\t'params' : {}\r\n\t};\r\n\tdocument.write('<scr' + 'ipt type=\"text\/javascript\" src=\"\/\/www.profitablecreativeformat.com\/a7db306710b44b2f2aed24478cf86126\/invoke.js\"><\/scr' + 'ipt>');\r\n<\/script>\r\n\n<\/div>\n<article>\n<p><strong>React Js Map Is Not A Function<\/strong>: Map is not a function occurs when we call the map () method on a value that is not an array. Let newval = data.push (value) setdata (newval) console.log (typeof data). .map doesn&#039;t exist from an object {}, it only exists from an array [].<\/p>\n<h2><strong>React Js Map Is Not A Function<\/strong><\/h2>\n<figure><noscript><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i2.wp.com\/global.discourse-cdn.com\/freecodecamp\/original\/3X\/1\/0\/1026b64a2aa5f72a659f07986b254e7908d68cae.png\" alt=\"A problem with fetch API and map function in React JS, please help me\" width=\"640\" height=\"360\" \/><\/noscript><img decoding=\"async\" class=\"v-cover ads-img\" src=\"https:\/\/i2.wp.com\/global.discourse-cdn.com\/freecodecamp\/original\/3X\/1\/0\/1026b64a2aa5f72a659f07986b254e7908d68cae.png\" alt=\"A problem with fetch API and map function in React JS, please help me\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/><figcaption>A problem with fetch API and map function in React JS, please help me from <a href=\"https:\/\/forum.freecodecamp.org\">forum.freecodecamp.org<\/a><\/figcaption><\/figure>\n<p>So you can do something like: Web first of all, you have to validate to have data before using the map. Can&#8217;t call setstate (or forceupdate) on an.<\/p>\n<\/article>\n<p><!--more--><\/p>\n<section>\n<aside>\n<h2>\u3010\u5df2\u89e3\u51b3\u3011ReactJS\u51fa\u9519\uff1aUncaught TypeError map is not a function \u5728\u8def\u4e0a<\/h2>\n<p><img decoding=\"async\" alt=\"\u3010\u5df2\u89e3\u51b3\u3011ReactJS\u51fa\u9519\uff1aUncaught TypeError map is not a function \u5728\u8def\u4e0a\" title=\"\u3010\u5df2\u89e3\u51b3\u3011ReactJS\u51fa\u9519\uff1aUncaught TypeError map is not a function \u5728\u8def\u4e0a\" src=\"https:\/\/i2.wp.com\/www.crifan.org\/files\/pic\/uploads\/2017\/08\/294aeffb8641d1e9ef14f95a7c3fa89f.png\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/www.crifan.org\" rel=\"nofollow\">www.crifan.org<\/a><\/aside>\n<aside>\n<h2>[Solved] React .map is not a function 9to5Answer<\/h2>\n<p><img decoding=\"async\" alt=\"[Solved] React .map is not a function 9to5Answer\" title=\"[Solved] React .map is not a function 9to5Answer\" src=\"https:\/\/i2.wp.com\/i.stack.imgur.com\/1gAle.jpg\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/9to5answer.com\" rel=\"nofollow\">9to5answer.com<\/a><\/aside>\n<aside>\n<h2>React JS Roadmap React JS Learning Path From Basic To Advance React<\/h2>\n<p><img decoding=\"async\" alt=\"React JS Roadmap React JS Learning Path From Basic To Advance React\" title=\"React JS Roadmap React JS Learning Path From Basic To Advance React\" src=\"https:\/\/i2.wp.com\/i.ytimg.com\/vi\/rjDcasVtd5Q\/maxresdefault.jpg\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/www.youtube.com\" rel=\"nofollow\">www.youtube.com<\/a><\/aside>\n<aside>\n<h2>javascript Error React says .map() is not a function. API returns<\/h2>\n<p><img decoding=\"async\" alt=\"javascript Error React says .map() is not a function. API returns\" title=\"javascript Error React says .map() is not a function. API returns\" src=\"https:\/\/i2.wp.com\/i.stack.imgur.com\/Vzsyp.png\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/stackoverflow.com\" rel=\"nofollow\">stackoverflow.com<\/a><\/aside>\n<aside>\n<h2>Map Not Working in Javascript Map Function Not Working in React JS<\/h2>\n<p><img decoding=\"async\" alt=\"Map Not Working in Javascript Map Function Not Working in React JS\" title=\"Map Not Working in Javascript Map Function Not Working in React JS\" src=\"https:\/\/i2.wp.com\/i.ytimg.com\/vi\/ASVz0-wqUz8\/maxresdefault.jpg\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/www.youtube.com\" rel=\"nofollow\">www.youtube.com<\/a><\/aside>\n<aside>\n<h2>javascript ReactJS TypeError undefined is not a function (near<\/h2>\n<p><img decoding=\"async\" alt=\"javascript ReactJS TypeError undefined is not a function (near\" title=\"javascript ReactJS TypeError undefined is not a function (near\" src=\"https:\/\/i2.wp.com\/i.stack.imgur.com\/Cwe5e.png\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/stackoverflow.com\" rel=\"nofollow\">stackoverflow.com<\/a><\/aside>\n<aside>\n<h2>javascript Map Issue in React this.state.Data.map is not a function<\/h2>\n<p><img decoding=\"async\" alt=\"javascript Map Issue in React this.state.Data.map is not a function\" title=\"javascript Map Issue in React this.state.Data.map is not a function\" src=\"https:\/\/i2.wp.com\/i.stack.imgur.com\/Co7PZ.png\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/stackoverflow.com\" rel=\"nofollow\">stackoverflow.com<\/a><\/aside>\n<aside>\n<h2>A problem with fetch API and map function in React JS, please help me<\/h2>\n<p><img decoding=\"async\" alt=\"A problem with fetch API and map function in React JS, please help me\" title=\"A problem with fetch API and map function in React JS, please help me\" src=\"https:\/\/i2.wp.com\/global.discourse-cdn.com\/freecodecamp\/original\/3X\/1\/0\/1026b64a2aa5f72a659f07986b254e7908d68cae.png\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/forum.freecodecamp.org\" rel=\"nofollow\">forum.freecodecamp.org<\/a><\/aside>\n<aside>\n<h2>Why using index as key in React.js map function is bad<\/h2>\n<p><img decoding=\"async\" alt=\"Why using index as key in React.js map function is bad\" title=\"Why using index as key in React.js map function is bad\" src=\"https:\/\/i2.wp.com\/hashnode.com\/utility\/r?url=https:%2F%2Fcdn.hashnode.com%2Fres%2Fhashnode%2Fimage%2Fupload%2Fv1681138266793%2F88abcec7-b10f-44b8-a0a8-08196b50c8bd.jpeg%3Fw%3D1200%26auto%3Dcompress%2Cformat%26format%3Dwebp%26fm%3Dpng\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/blog.anja-stricker.de\" rel=\"nofollow\">blog.anja-stricker.de<\/a><\/aside>\n<aside>\n<h2>javascript reactJS map function not working as expected Stack Overflow<\/h2>\n<p><img decoding=\"async\" alt=\"javascript reactJS map function not working as expected Stack Overflow\" title=\"javascript reactJS map function not working as expected Stack Overflow\" src=\"https:\/\/i2.wp.com\/i.stack.imgur.com\/lAhpR.png\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/stackoverflow.com\" rel=\"nofollow\">stackoverflow.com<\/a><\/aside>\n<aside>\n<h2>Default MAP is Not a Function React JS Tutorial YouTube<\/h2>\n<p><img decoding=\"async\" alt=\"Default MAP is Not a Function React JS Tutorial YouTube\" title=\"Default MAP is Not a Function React JS Tutorial YouTube\" src=\"https:\/\/i2.wp.com\/i.ytimg.com\/vi\/XMm12Dw_Kpw\/maxresdefault.jpg\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/www.youtube.com\" rel=\"nofollow\">www.youtube.com<\/a><\/aside>\n<aside>\n<h2>react.js\u4e2d\u51fa\u73b0&quot;.map is not a function\u201c\u9519\u8bef \u95ee\u7b54 \u817e\u8baf\u4e91\u5f00\u53d1\u8005\u793e\u533a\u817e\u8baf\u4e91<\/h2>\n<p><img decoding=\"async\" alt=\"react.js\u4e2d\u51fa\u73b0&quot;.map is not a function\u201c\u9519\u8bef \u95ee\u7b54 \u817e\u8baf\u4e91\u5f00\u53d1\u8005\u793e\u533a\u817e\u8baf\u4e91\" title=\"react.js\u4e2d\u51fa\u73b0&quot;.map is not a function\u201c\u9519\u8bef \u95ee\u7b54 \u817e\u8baf\u4e91\u5f00\u53d1\u8005\u793e\u533a\u817e\u8baf\u4e91\" src=\"https:\/\/i2.wp.com\/ask.qcloudimg.com\/http-save\/yehe-900000\/31e7f199f4fdc6f442b62e6303343f6f.png?imageView2\/2\/w\/1620\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/cloud.tencent.com\" rel=\"nofollow\">cloud.tencent.com<\/a><\/aside>\n<aside>\n<h2>[Solved] .map() undefined is not a function in React.js 9to5Answer<\/h2>\n<p><img decoding=\"async\" alt=\"[Solved] .map() undefined is not a function in React.js 9to5Answer\" title=\"[Solved] .map() undefined is not a function in React.js 9to5Answer\" src=\"https:\/\/i2.wp.com\/sgp1.digitaloceanspaces.com\/ffh-space-01\/9to5answer\/uploads\/post\/avatar\/800314\/template_map-undefined-is-not-a-function-in-react-js20220714-3169172-1dm5oy2.jpg\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/9to5answer.com\" rel=\"nofollow\">9to5answer.com<\/a><\/aside>\n<aside>\n<h2>How to use map() in React applications Upmostly<\/h2>\n<p><img decoding=\"async\" alt=\"How to use map() in React applications Upmostly\" title=\"How to use map() in React applications Upmostly\" src=\"https:\/\/i2.wp.com\/upmostly.com\/wp-content\/uploads\/Upmostly-banner-13.png\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/upmostly.com\" rel=\"nofollow\">upmostly.com<\/a><\/aside>\n<aside>\n<h2>\u3010\u5df2\u89e3\u51b3\u3011ReactJS\u51fa\u9519\uff1aUncaught TypeError map is not a function \u5728\u8def\u4e0a<\/h2>\n<p><img decoding=\"async\" alt=\"\u3010\u5df2\u89e3\u51b3\u3011ReactJS\u51fa\u9519\uff1aUncaught TypeError map is not a function \u5728\u8def\u4e0a\" title=\"\u3010\u5df2\u89e3\u51b3\u3011ReactJS\u51fa\u9519\uff1aUncaught TypeError map is not a function \u5728\u8def\u4e0a\" src=\"https:\/\/i2.wp.com\/www.crifan.com\/files\/pic\/uploads\/2017\/08\/d9962274de20d1291901042f87523d6f.png\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/www.crifan.com\" rel=\"nofollow\">www.crifan.com<\/a><\/aside>\n<aside>\n<h2>React Map Is Not A Function World Map<\/h2>\n<p><img decoding=\"async\" alt=\"React Map Is Not A Function World Map\" title=\"React Map Is Not A Function World Map\" src=\"https:\/\/i2.wp.com\/reactjsexample.com\/content\/images\/2018\/04\/react-map-gl.png\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/www.aarushijains.com\" rel=\"nofollow\">www.aarushijains.com<\/a><\/aside>\n<aside>\n<h2>React Map Is Not A Function World Map<\/h2>\n<p><img decoding=\"async\" alt=\"React Map Is Not A Function World Map\" title=\"React Map Is Not A Function World Map\" src=\"https:\/\/i2.wp.com\/i.stack.imgur.com\/A2a9v.png\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/aarushijains.com\" rel=\"nofollow\">aarushijains.com<\/a><\/aside>\n<aside>\n<h2>reactjs React JS google maps Object is not a function Stack Overflow<\/h2>\n<p><img decoding=\"async\" alt=\"reactjs React JS google maps Object is not a function Stack Overflow\" title=\"reactjs React JS google maps Object is not a function Stack Overflow\" src=\"https:\/\/i2.wp.com\/i.stack.imgur.com\/1YcNt.png\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/stackoverflow.com\" rel=\"nofollow\">stackoverflow.com<\/a><\/aside>\n<aside>\n<h2>Using The Map Function in Javascript and React! LaptrinhX<\/h2>\n<p><img decoding=\"async\" alt=\"Using The Map Function in Javascript and React! LaptrinhX\" title=\"Using The Map Function in Javascript and React! LaptrinhX\" src=\"https:\/\/i2.wp.com\/cdn-images-1.medium.com\/max\/602\/1*Il6yAcbo2v-MlZdJsJI4Zg.png\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/laptrinhx.com\" rel=\"nofollow\">laptrinhx.com<\/a><\/aside>\n<aside>\n<h2>Object.map is not a function How to map Object in Js, React Native<\/h2>\n<p><img decoding=\"async\" alt=\"Object.map is not a function How to map Object in Js, React Native\" title=\"Object.map is not a function How to map Object in Js, React Native\" src=\"https:\/\/i2.wp.com\/i.ytimg.com\/vi\/jcLW2tVsZis\/maxresdefault.jpg\" width=\"100%\" style=\"margin-right: 8px;margin-bottom: 8px;\" \/> Source: <a href=\"https:\/\/www.youtube.com\" rel=\"nofollow\">www.youtube.com<\/a><\/aside>\n<\/section>\n<section>\n<p><strong>React Js Map Is Not A Function<\/strong>: So you can do something like: Web first of all, you have to validate to have data before using the map. .map doesn&#039;t exist from an object {}, it only exists from an array [].<\/p>\n<\/section>\n\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>React Js Map Is Not A Function: Map is not a function occurs when we call the map () method on a value that is not an array. Let newval = data.push (value) setdata (newval) console.log (typeof data). .map doesn&#039;t exist from an object {}, it only exists from an array []. React Js Map [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[58],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/zahid.reviewexperto.com\/wp-json\/wp\/v2\/posts\/108"}],"collection":[{"href":"https:\/\/zahid.reviewexperto.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zahid.reviewexperto.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zahid.reviewexperto.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zahid.reviewexperto.com\/wp-json\/wp\/v2\/comments?post=108"}],"version-history":[{"count":0,"href":"https:\/\/zahid.reviewexperto.com\/wp-json\/wp\/v2\/posts\/108\/revisions"}],"wp:attachment":[{"href":"https:\/\/zahid.reviewexperto.com\/wp-json\/wp\/v2\/media?parent=108"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zahid.reviewexperto.com\/wp-json\/wp\/v2\/categories?post=108"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zahid.reviewexperto.com\/wp-json\/wp\/v2\/tags?post=108"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}