{"id":2460,"date":"2019-06-26T16:38:18","date_gmt":"2019-06-26T15:38:18","guid":{"rendered":"http:\/\/www.dpscomputing.com\/blog\/?p=2460"},"modified":"2021-03-01T21:46:58","modified_gmt":"2021-03-01T21:46:58","slug":"uncaught-typeerror-aarray-foreach-is-not-a-function","status":"publish","type":"post","link":"https:\/\/www.dpscomputing.com\/blog\/2019\/06\/26\/uncaught-typeerror-aarray-foreach-is-not-a-function\/","title":{"rendered":"Uncaught TypeError: aArray.forEach is not a function"},"content":{"rendered":"\n<p>You&#8217;ve got an array, you&#8217;re trying to loop and lo-and-behold, you come up against this error:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"538\" height=\"60\" data-attachment-id=\"2461\" data-permalink=\"https:\/\/www.dpscomputing.com\/blog\/2019\/06\/26\/uncaught-typeerror-aarray-foreach-is-not-a-function\/image-12\/\" data-orig-file=\"https:\/\/www.dpscomputing.com\/blog\/wp-content\/uploads\/2019\/06\/image-12.png\" data-orig-size=\"538,60\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"image-12\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/www.dpscomputing.com\/blog\/wp-content\/uploads\/2019\/06\/image-12-300x33.png\" data-large-file=\"https:\/\/www.dpscomputing.com\/blog\/wp-content\/uploads\/2019\/06\/image-12.png\" tabindex=\"0\" role=\"button\" src=\"http:\/\/www.dpscomputing.com\/blog\/wp-content\/uploads\/2019\/06\/image-12.png\" alt=\"\" class=\"wp-image-2461\" srcset=\"https:\/\/www.dpscomputing.com\/blog\/wp-content\/uploads\/2019\/06\/image-12.png 538w, https:\/\/www.dpscomputing.com\/blog\/wp-content\/uploads\/2019\/06\/image-12-150x17.png 150w, https:\/\/www.dpscomputing.com\/blog\/wp-content\/uploads\/2019\/06\/image-12-300x33.png 300w, https:\/\/www.dpscomputing.com\/blog\/wp-content\/uploads\/2019\/06\/image-12-100x11.png 100w, https:\/\/www.dpscomputing.com\/blog\/wp-content\/uploads\/2019\/06\/image-12-200x22.png 200w, https:\/\/www.dpscomputing.com\/blog\/wp-content\/uploads\/2019\/06\/image-12-450x50.png 450w\" sizes=\"auto, (max-width: 538px) 100vw, 538px\" \/><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>(index):116 Uncaught (in promise) TypeError: aArray.forEach is not a function<\/code><\/pre>\n\n\n\n<p>You&#8217;re looping an array, so how can this be?  <\/p>\n\n\n\n<p>The most common cause is actually trying to loop arround an <em><span style=\"text-decoration: underline;\">array-like<\/span><\/em> collection rather than an array itself.  For example, a HTMLCollection is array-like, not an array.  <\/p>\n\n\n\n<p>Simple fix for this is to create an array from this collection using code such as:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Array.from(aArray).forEach(function(item, index){\n   \/\/your code here\n});<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>You&#8217;ve got an array, you&#8217;re trying to loop and lo-and-behold, you come up against this error: You&#8217;re looping an array, so how can this be? The most common cause is actually trying to loop&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"categories":[2139],"tags":[2151,2152,2150,2153,2156,2157,2154,2149,2155],"class_list":["post-2460","post","type-post","status-publish","format-standard","hentry","category-development-issues","tag-array","tag-array-like-collection","tag-arrays","tag-collection","tag-foreach","tag-foreach-is-not-a-function","tag-html-collection","tag-javascript","tag-javascript-error"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p3nsfA-DG","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.dpscomputing.com\/blog\/wp-json\/wp\/v2\/posts\/2460","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dpscomputing.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dpscomputing.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dpscomputing.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dpscomputing.com\/blog\/wp-json\/wp\/v2\/comments?post=2460"}],"version-history":[{"count":2,"href":"https:\/\/www.dpscomputing.com\/blog\/wp-json\/wp\/v2\/posts\/2460\/revisions"}],"predecessor-version":[{"id":3070,"href":"https:\/\/www.dpscomputing.com\/blog\/wp-json\/wp\/v2\/posts\/2460\/revisions\/3070"}],"wp:attachment":[{"href":"https:\/\/www.dpscomputing.com\/blog\/wp-json\/wp\/v2\/media?parent=2460"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dpscomputing.com\/blog\/wp-json\/wp\/v2\/categories?post=2460"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dpscomputing.com\/blog\/wp-json\/wp\/v2\/tags?post=2460"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}