{"id":19346,"date":"2025-07-24T11:38:26","date_gmt":"2025-07-24T06:08:26","guid":{"rendered":"https:\/\/meetanshi.com\/blog\/?p=19346"},"modified":"2025-09-01T11:06:30","modified_gmt":"2025-09-01T05:36:30","slug":"url-indexof-is-not-a-function","status":"publish","type":"post","link":"https:\/\/meetanshi.com\/blog\/url-indexof-is-not-a-function\/","title":{"rendered":"Uncaught TypeError: url.indexOf is Not a Function"},"content":{"rendered":"\n

After upgrading your Magento to the latest version, a commonly encountered frontend console error is: jquery.js:9612 Uncaught TypeError: url.indexOf is not a function<\/strong><\/p>\n\n\n

\n
\"Uncaught<\/figure>\n<\/div>\n\n\n

This typically occurs because upgrading Magento also updates the underlying components such as PHP, Elasticsearch, jQuery, etc. <\/p>\n\n\n\n

However, certain elements\u2014especially within custom or older themes may still be using the outdated jQuery methods.<\/p>\n\n\n\n

As a result, the console throws errors when deprecated functions like .load(), .unload(), and .error() are used, since these are no longer supported in newer versions of jQuery.<\/p>\n\n\n\n

No need to worry\u2014we\u2019re here with a simple solution.<\/p>\n\n\n\n

In Magento, jQuery code is generally found within .phtml files. To resolve this issue, you need to replace deprecated jQuery methods like .load(), .unload(), and .error() with the .on() method.<\/p>\n\n\n\n

For example:<\/p>\n\n\n\n

Change this:<\/p>\n\n\n\n

$( “img” ).load(fn);<\/p>\n\n\n\n

To this:<\/p>\n\n\n\n

$( “img” ).on(“load”, fn);<\/p>\n\n\n\n

Let\u2019s look at a full example:<\/p>\n\n\n\n

Old Code:<\/p>\n\n\n\n

<script type=\"text\/javascript\">\n $(window).load(function ()\n { \/\/ run code initializeCode(); });\n $(window).unload(function()\n { Cleanup(); });\n\n <\/script>\n<\/pre>\n\n\n\n
Updated Code:<\/p>\n\n\n\n
<script type=\"text\/javascript\">\n $(window).on('load', function ()\n { \/\/ run code initializeCode(); });\n $(window).on('unload', function() \n{ Cleanup(); });\n <\/script>\n<\/pre>\n\n\n\n
By updating your jQuery methods, you\u2019ll ensure compatibility with the latest version and eliminate these frontend errors.<\/p>\n\n\n\n
Looking to upgrade your Magento store to the latest version<\/a>?\u00a0<\/p>\n\n\n\n
Let our expert team handle it for you\u2014ensuring a smooth, secure, and hassle-free upgrade with full compatibility and performance optimization.<\/p>\n","protected":false},"excerpt":{"rendered":"
After upgrading your Magento to the latest version, a commonly encountered frontend console error is: jquery.js:9612 Uncaught TypeError: url.indexOf is not a function This typically…<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[34],"tags":[],"class_list":["post-19346","post","type-post","status-publish","format-standard","hentry","category-magento"],"acf":[],"_links":{"self":[{"href":"https:\/\/meetanshi.com\/blog\/wp-json\/wp\/v2\/posts\/19346","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/meetanshi.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/meetanshi.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/meetanshi.com\/blog\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/meetanshi.com\/blog\/wp-json\/wp\/v2\/comments?post=19346"}],"version-history":[{"count":3,"href":"https:\/\/meetanshi.com\/blog\/wp-json\/wp\/v2\/posts\/19346\/revisions"}],"predecessor-version":[{"id":21288,"href":"https:\/\/meetanshi.com\/blog\/wp-json\/wp\/v2\/posts\/19346\/revisions\/21288"}],"wp:attachment":[{"href":"https:\/\/meetanshi.com\/blog\/wp-json\/wp\/v2\/media?parent=19346"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/meetanshi.com\/blog\/wp-json\/wp\/v2\/categories?post=19346"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/meetanshi.com\/blog\/wp-json\/wp\/v2\/tags?post=19346"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}