{"id":34449,"date":"2024-03-27T15:55:25","date_gmt":"2024-03-27T15:55:25","guid":{"rendered":"https:\/\/10web.io\/blog\/?p=34449"},"modified":"2024-11-14T11:28:17","modified_gmt":"2024-11-14T11:28:17","slug":"resolving-the-jquery-is-not-defined-error","status":"publish","type":"post","link":"https:\/\/10web.io\/blog\/resolving-the-jquery-is-not-defined-error\/","title":{"rendered":"Resolving the jQuery is Not Defined&#8221; Error"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">The &#8220;jQuery is Not Defined&#8221; error is a common hurdle encountered in web development, especially for those new to integrating jQuery, a widely used JavaScript library, into web pages. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">This error message pops up in the browser&#8217;s console when the JavaScript code attempts to utilize jQuery syntax or functions before the library has been loaded, or if it hasn&#8217;t been loaded at all. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Essentially, it&#8217;s the browser&#8217;s way of saying, &#8220;I don&#8217;t know what jQuery is,&#8221; which leads to the immediate halt of any jQuery-related script execution.<\/span><\/p>\n\r\n<style>\r\n  #ctablocks_inline_90{\r\n          background-color: #000000;\r\n        color: #ffffff;\r\n    border-radius: 6px;\r\n  }\r\n\r\n  #ctablocks_inline_90 p{\r\n    color: #ffffff;\r\n  }\r\n  #ctablocks_inline_90 .button{\r\n        background-color: rgb(51,57,241);\r\n      color: #ffffff;\r\n    border-color: #3339f1 !important;\r\n  }\r\n  #ctablocks_inline_90 .button:hover{\r\n    background: rgba(51,57,241,0.8);\r\n    color: #ffffff;\r\n    opacity: 1;\r\n  }\r\n        #ctablocks_inline_90 .ctablocks_content_info p {\r\n        padding-left: 36px;\r\n      }\r\n      #ctablocks_inline_90 .ctablocks_content_button {\r\n          margin-left: 37px;\r\n      }\r\n  @media screen and (min-width: 768px) and (max-width: 1260px) {\r\n      #ctablocks_inline_90 .ctablocks_content_button {\r\n          margin-left: 37px !important;\r\n      }\r\n  }\r\n  ;\r\n<\/style>\r\n<div id=\"ctablocks_inline_90\" class=\"ctablocks_container inline_type\r\n        \">\r\n\r\n  <div class=\"ctablocks_content clear\">\r\n    <div class=\"ctablocks_content_info\">\r\n      \r\n            <div class=\"title-wrap\">\r\n\t\t\t\t\t                  <img decoding=\"async\" src=\"https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/04\/info-icon-cta.png\" alt=\"Say goodbye to website errors\" title=\"Say goodbye to website errors\">\r\n\t\t\t\t\t            <h4>Say goodbye to website errors<\/h4>\r\n        <\/div>\r\n              <p>Achieve peace of mind with 99.99% uptime on 10Web Managed <br>WordPress Hosting, powered by Google Cloud. <\/p>\r\n          <\/div>\r\n    <div class=\"ctablocks_content_button\">\r\n              <a href=\"https:\/\/10web.io\/ai-website-builder\/\" class=\"button\" data-gtag=\"sign-up-blog\" data-buttontype=\"sign-up\" data-gtag=\"cta-90\" data-buttontype=\"cta-inline\"\r\n\t        >Learn How<\/a>\r\n            \r\n    <\/div>\r\n  <\/div>\r\n    <\/div>\r\n\n<h2><span style=\"font-weight: 400;\">Variations of the error<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">The &#8220;jQuery is Not Defined&#8221; error can manifest in various ways, depending on the browser, the environment (like a development environment versus a production server), or how the script is included in the web page. Some common variations of this error message include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">jQuery is not defined<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">$ is not defined<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Uncaught ReferenceError: $ is not defined<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Uncaught ReferenceError: jQuery is not defined<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">ReferenceError: jQuery is not defined<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">ReferenceError: $ is not defined<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">TypeError: $(&#8230;). is not a function<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">TypeError: jQuery(&#8230;). is not a function<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400;\">Understanding &#8220;jQuery is Not Defined&#8221; in WordPress<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">In the WordPress ecosystem, jQuery is used extensively by themes and plugins to add interactivity and enhance user experience. Perhaps a plugin you&#8217;re using was designed to leverage jQuery for its functionality\u2014sliders, pop-ups, form validation, and more. When the browser reports that &#8220;jQuery is not defined,&#8221; it essentially means that your site&#8217;s JavaScript is attempting to call upon jQuery functions before jQuery itself has been loaded, or it hasn&#8217;t been loaded at all. <\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Common causes of this error in WordPress<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Several scenarios specific to WordPress can lead to this error, including:<\/span><\/p>\n<p><b>Themes and plugins<\/b><span style=\"font-weight: 400;\">: A theme or plugin that improperly enqueues jQuery, or relies on an outdated version, can cause this issue.<\/span><\/p>\n<p><b>Manual edits<\/b><span style=\"font-weight: 400;\">: Custom edits to theme files, especially if jQuery is manually deregistered or enqueued incorrectly, can result in this error.<\/span><\/p>\n<p><b>Conflicts<\/b><span style=\"font-weight: 400;\">: Sometimes, installing multiple plugins that all attempt to load their own versions of jQuery can lead to conflicts and subsequently, the error.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">General causes of this error<\/span><\/h2>\n<p><b>Incorrect order of scripts<\/b><span style=\"font-weight: 400;\">: The most common cause is that your HTML page is trying to use jQuery before it has been loaded. Scripts relying on jQuery must be placed after the jQuery library&#8217;s <\/span><b>&lt;script&gt;<\/b><span style=\"font-weight: 400;\"> tag.<\/span><\/p>\n<p><b>Failure to include jQuery<\/b><span style=\"font-weight: 400;\">: Simply forgetting to include jQuery on your webpage can cause this error. Ensure you have a <\/span><b>&lt;script&gt;<\/b><span style=\"font-weight: 400;\"> tag that correctly sources the jQuery library.<\/span><\/p>\n<p><b>Conflicting libraries<\/b><span style=\"font-weight: 400;\">: Sometimes, other JavaScript libraries or scripts can conflict with jQuery, especially if they also use the <\/span><b>$<\/b><span style=\"font-weight: 400;\"> symbol. This can inadvertently lead to jQuery being overwritten or not properly initialized.<\/span><\/p>\n<p><b>Caching issues<\/b><span style=\"font-weight: 400;\">: In some cases, your browser might cache an old version of your webpage that didn&#8217;t include jQuery, or the path to jQuery might be incorrect, leading to a failure in loading the library.<\/span><\/p>\n<p><b>Content delivery network (CDN) issues<\/b><span style=\"font-weight: 400;\">: If you&#8217;re loading jQuery from a CDN, and the CDN is down or unreachable, your site will not be able to load the library, resulting in this error.<\/span><\/p>\n\r\n<style>\r\n  #ctablocks_inline_90{\r\n          background-color: #000000;\r\n        color: #ffffff;\r\n    border-radius: 6px;\r\n  }\r\n\r\n  #ctablocks_inline_90 p{\r\n    color: #ffffff;\r\n  }\r\n  #ctablocks_inline_90 .button{\r\n        background-color: rgb(51,57,241);\r\n      color: #ffffff;\r\n    border-color: #3339f1 !important;\r\n  }\r\n  #ctablocks_inline_90 .button:hover{\r\n    background: rgba(51,57,241,0.8);\r\n    color: #ffffff;\r\n    opacity: 1;\r\n  }\r\n        #ctablocks_inline_90 .ctablocks_content_info p {\r\n        padding-left: 36px;\r\n      }\r\n      #ctablocks_inline_90 .ctablocks_content_button {\r\n          margin-left: 37px;\r\n      }\r\n  @media screen and (min-width: 768px) and (max-width: 1260px) {\r\n      #ctablocks_inline_90 .ctablocks_content_button {\r\n          margin-left: 37px !important;\r\n      }\r\n  }\r\n  ;\r\n<\/style>\r\n<div id=\"ctablocks_inline_90\" class=\"ctablocks_container inline_type\r\n        \">\r\n\r\n  <div class=\"ctablocks_content clear\">\r\n    <div class=\"ctablocks_content_info\">\r\n      \r\n            <div class=\"title-wrap\">\r\n\t\t\t\t\t                  <img decoding=\"async\" src=\"https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/04\/info-icon-cta.png\" alt=\"Say goodbye to website errors\" title=\"Say goodbye to website errors\">\r\n\t\t\t\t\t            <h4>Say goodbye to website errors<\/h4>\r\n        <\/div>\r\n              <p>Achieve peace of mind with 99.99% uptime on 10Web Managed <br>WordPress Hosting, powered by Google Cloud. <\/p>\r\n          <\/div>\r\n    <div class=\"ctablocks_content_button\">\r\n              <a href=\"https:\/\/10web.io\/ai-website-builder\/\" class=\"button\" data-gtag=\"sign-up-blog\" data-buttontype=\"sign-up\" data-gtag=\"cta-90\" data-buttontype=\"cta-inline\"\r\n\t        >Learn How<\/a>\r\n            \r\n    <\/div>\r\n  <\/div>\r\n    <\/div>\r\n\n<h2><span style=\"font-weight: 400;\">How to fix the jQuery is not defined error<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Before making any changes, ensuring you have a full website backup is essential. If you have access to a staging or development environment you can use that environment to fix the error and bypass any potential disruptions from direct edits on the live site.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">With those safeguards in place, you&#8217;re ready to tackle the &#8220;jQuery is not defined&#8221; error. <\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Verify jQuery is loaded by testing the script source<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">One common cause behind this issue is that while jQuery might be included, it&#8217;s not properly loaded due to various reasons like incorrect URLs, network issues, or file access permissions. To verify if jQuery is correctly loaded, a simple yet effective approach involves testing the script source directly in your browser.<\/span><\/p>\n<h4><span style=\"font-weight: 400;\">Steps to test jQuery script source<\/span><\/h4>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Firstly, you need to locate the script tag that includes jQuery in your HTML code. This tag is crucial because it specifies the source from which jQuery is supposed to be loaded. Look for a line in your code that looks like this:<\/span><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<pre>&lt;script src=\"http:\/\/code.jquery.com\/jquery-1.11.2.min.js\"&gt;&lt;\/script&gt;<\/pre>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">This <\/span><b>src<\/b><span style=\"font-weight: 400;\"> attribute contains the URL of the jQuery library you&#8217;re trying to load.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Extract the URL from the <\/span><b>src<\/b><span style=\"font-weight: 400;\"> attribute of the script tag. This is the direct link to the jQuery file you&#8217;re including on your site. Ensure you&#8217;re copying the entire URL accurately, including the <\/span><b>http:\/\/<\/b><span style=\"font-weight: 400;\"> or <\/span><b>https:\/\/<\/b><span style=\"font-weight: 400;\"> part at the beginning.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Open a new tab or window in your web browser and paste the copied URL into the address bar. Press Enter to navigate to this URL.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">If the jQuery file is correctly loaded, you will see the entire contents of the jQuery library displayed as plain text in your browser. This indicates that the jQuery script source is accessible and functioning as expected.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Alternate methods to verify jQuery loading <\/span><\/h3>\n<h4><span style=\"font-weight: 400;\">How to verify jQuery loading via page source<\/span><\/h4>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Using-View-Page-Source.jpg\" alt=\"Using View Page Source to search for jQuery loading.\" width=\"1560\" height=\"875\" class=\"alignnone size-full wp-image-34452\" srcset=\"https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Using-View-Page-Source.jpg 1560w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Using-View-Page-Source-742x416.jpg 742w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Using-View-Page-Source-1484x832.jpg 1484w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Using-View-Page-Source-150x84.jpg 150w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Using-View-Page-Source-768x431.jpg 768w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Using-View-Page-Source-1536x862.jpg 1536w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Using-View-Page-Source-371x208.jpg 371w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Using-View-Page-Source-600x337.jpg 600w\" sizes=\"auto, (max-width: 1560px) 100vw, 1560px\" \/><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Navigate to the webpage you want to inspect using your preferred web browser.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Right-click anywhere on the web page and select <\/span><b>View Page Source<\/b><span style=\"font-weight: 400;\"> from the context menu. This option might slightly vary between browsers.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">With the source code open, you will now need to find the jQuery script inclusion. This can easily be done by using the search function built into your browser:<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Press <\/span><b>Ctrl+F<\/b><span style=\"font-weight: 400;\"> on Windows or <\/span><b>Command+F<\/b><span style=\"font-weight: 400;\"> on Mac to open the search bar.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Type <\/span><b>jquery<\/b><span style=\"font-weight: 400;\"> into the search field and press Enter. This action will highlight all occurrences of jquery in the source code.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Look for a line in the highlighted results that resembles a script tag linking to a jQuery library. <\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">It might look something like this:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\"> <\/span>&lt;script src=\"https:\/\/ajax.googleapis.com\/ajax\/libs\/jquery\/3.5.1\/jquery.min.js\"&gt;&lt;\/script&gt;<\/pre>\n<p><span style=\"font-weight: 400;\">or for locally hosted jQuery, something like this:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\"> <\/span>&lt;script src=\"\/path\/to\/jquery.min.js\"&gt;&lt;\/script&gt;<\/pre>\n<p><span style=\"font-weight: 400;\">If you find such a line, jQuery is included in your page. If not, jQuery may not be loaded, which could be causing the issues you&#8217;re experiencing.<\/span><\/p>\n<h4><span style=\"font-weight: 400;\">Using the developer tools to verify jQuery loading<\/span><\/h4>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Using-developer-tools-to-determine-jQuery-loading.jpg\" alt=\"Using developer tools to determine jQuery loading.\" width=\"1560\" height=\"875\" class=\"alignnone size-full wp-image-34453\" srcset=\"https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Using-developer-tools-to-determine-jQuery-loading.jpg 1560w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Using-developer-tools-to-determine-jQuery-loading-742x416.jpg 742w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Using-developer-tools-to-determine-jQuery-loading-1484x832.jpg 1484w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Using-developer-tools-to-determine-jQuery-loading-150x84.jpg 150w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Using-developer-tools-to-determine-jQuery-loading-768x431.jpg 768w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Using-developer-tools-to-determine-jQuery-loading-1536x862.jpg 1536w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Using-developer-tools-to-determine-jQuery-loading-371x208.jpg 371w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Using-developer-tools-to-determine-jQuery-loading-600x337.jpg 600w\" sizes=\"auto, (max-width: 1560px) 100vw, 1560px\" \/><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Access your website and open the developer tools in your browser. This can typically be done by right-clicking on the page and selecting <\/span><b>Inspect<\/b><span style=\"font-weight: 400;\"> or by pressing <\/span><b>F12<\/b><span style=\"font-weight: 400;\"> or <\/span><b>Ctrl+Shift+I<\/b><span style=\"font-weight: 400;\"> (Windows) \/ <\/span><b>Cmd+Option+I<\/b><span style=\"font-weight: 400;\"> (Mac).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Within the developer tools, find and click on the <\/span><b>Network<\/b><span style=\"font-weight: 400;\"> tab. This tab shows all network requests made by your website as it loads.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Check the <\/span><b>Disable cache<\/b><span style=\"font-weight: 400;\"> option and with the Network tab open, reload your website to capture all loading activities.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Use the filter options to narrow down the results to JavaScript files. You can typically do this by selecting the <\/span><b>JS<\/b><span style=\"font-weight: 400;\"> filter or typing <\/span><b>jquery<\/b><span style=\"font-weight: 400;\"> into the filter\/search box.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Scroll through the list of scripts being loaded or use the search function within the Network tab to find entries related to jQuery. You&#8217;re looking for a file that contains <\/span><b>jquery<\/b><span style=\"font-weight: 400;\"> in its name, indicating the jQuery library is being loaded.<\/span><\/li>\n<\/ol>\n<h3><span style=\"font-weight: 400;\">Ensure jQuery is correctly included in WordPress<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">If you find that jQuery is not being loaded or you&#8217;re encountering issues despite its presence, you may need to ensure it&#8217;s correctly included in your WordPress theme or plugin. WordPress offers a robust way to manage scripts through the <\/span><b>wp_enqueue_script<\/b><span style=\"font-weight: 400;\"> function. This method is preferred because it handles script dependencies efficiently and helps avoid conflicts.<\/span><\/p>\n<h4><span style=\"font-weight: 400;\">Enqueue jQuery in WordPress<\/span><\/h4>\n<ol>\n<li><span style=\"font-weight: 400;\">Connect to your WordPress site using an FTP client or the file manager provided by your hosting service.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Navigate to your <\/span><b>theme&#8217;s folder<\/b><span style=\"font-weight: 400;\"> and find the <\/span><b>functions.php<\/b><span style=\"font-weight: 400;\"> file. It&#8217;s advisable to create a child theme and make changes there to avoid losing customizations when your theme updates.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">If jQuery is missing, you can enqueue it by adding the following code snippet to your <\/span><b>functions.php<\/b><span style=\"font-weight: 400;\"> file:<\/span><\/li>\n<\/ol>\n<pre>function my_theme_enqueue_scripts() {\r\n\r\n wp_enqueue_script('jquery');\r\n\r\n}\r\n\r\nadd_action('wp_enqueue_scripts', 'my_theme_enqueue_scripts');<\/pre>\n<p><span style=\"font-weight: 400;\">This ensures that WordPress includes jQuery on all pages of your site.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If you&#8217;re adding custom scripts that depend on jQuery, ensure to list jQuery as a dependency, like so:<\/span><\/p>\n<pre>wp_enqueue_script( 'custom-script', get_template_directory_uri() . '\/js\/custom-script.js', array('jquery'), '1.0', true );<\/pre>\n<h3><span style=\"font-weight: 400;\">Implement a local fallback with Google hosted jQuery<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Including a Google-hosted version of jQuery in your website is a common practice to take advantage of Google&#8217;s CDN for fast and reliable delivery of this popular JavaScript library. However, to ensure your website remains robust against potential CDN outages or network issues, implementing a local fallback is crucial. This setup allows your site to automatically use a locally hosted version of jQuery if, for any reason, the Google-hosted version fails to load. This method adheres to web development best practices by optimizing performance while ensuring redundancy. Below is a step-by-step guide to implementing this strategy effectively.<\/span><\/p>\n<h4><span style=\"font-weight: 400;\">Include Google-hosted jQuery<\/span><\/h4>\n<p><span style=\"font-weight: 400;\">First, you need to add the Google-hosted jQuery script tag to your website. Place this tag within the <\/span><b>&lt;head&gt;<\/b><span style=\"font-weight: 400;\"> section of your HTML document or right before the closing <\/span><b>&lt;\/body&gt;<\/b><span style=\"font-weight: 400;\"> tag to ensure other scripts that depend on jQuery can use it. For example:<\/span><\/p>\n<pre>&lt;script src=\"https:\/\/ajax.googleapis.com\/ajax\/libs\/jquery\/3.5.1\/jquery.min.js\"&gt;&lt;\/script&gt;<\/pre>\n<h4><span style=\"font-weight: 400;\">Add the local fallback script<\/span><\/h4>\n<p><span style=\"font-weight: 400;\">Immediately following the script tag for the Google-hosted jQuery, you&#8217;ll add a small piece of JavaScript. This script checks if jQuery has been successfully loaded from the Google CDN. If not, it dynamically writes a new script tag into your HTML document to load jQuery from a local source.<\/span><\/p>\n<pre>&lt;script&gt;\r\n\r\n window.jQuery || document.write('&lt;script src=\"\/path\/to\/local\/jquery-3.5.1.min.js\"&gt;&lt;\\\/script&gt;');\r\n\r\n&lt;\/script&gt;<\/pre>\n<p><span style=\"font-weight: 400;\">Make sure to replace <\/span><b>&#8220;\/path\/to\/local\/jquery-3.5.1.min.js&#8221;<\/b><span style=\"font-weight: 400;\"> with the correct path to the jQuery file hosted on your server.<\/span><\/p>\n<h4><span style=\"font-weight: 400;\">Understanding the code<\/span><\/h4>\n<p><b>window.jQuery<\/b><span style=\"font-weight: 400;\">: This part of the script checks if the jQuery object is available globally, which would indicate that jQuery has been loaded successfully.<\/span><\/p>\n<p><b>document.write<\/b><span style=\"font-weight: 400;\">: This method is used to insert HTML into the document. It&#8217;s used here to add a script tag for the local jQuery file if the CDN version is not loaded. The escape sequence <\/span><b>&lt;\\\/script&gt;<\/b><span style=\"font-weight: 400;\"> is used to prevent the string from being interpreted as the end of the script block.<\/span><\/p>\n<h4><span style=\"font-weight: 400;\">Understanding the fallback mechanism<\/span><\/h4>\n<p><span style=\"font-weight: 400;\">The fallback mechanism operates on a simple check: <\/span><b>window.jQuery<\/b><span style=\"font-weight: 400;\">. If the jQuery object is not defined, it implies that the CDN version did not load properly. The <\/span><b>document.write<\/b><span style=\"font-weight: 400;\"> method is then used to inject a new <\/span><b>&lt;script&gt;<\/b><span style=\"font-weight: 400;\"> tag that loads jQuery from a local file.<\/span><\/p>\n<p><b>Benefits<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ensures jQuery is always available, even if the CDN fails.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Loading jQuery locally can reduce latency in certain scenarios, especially if the CDN version is slow to respond or if the user\u2019s network has issues connecting to the CDN.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Having a local copy gives you control over the version of jQuery being used, allowing for consistent testing and debugging.<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-weight: 400;\">Add a snippet to wp-config.php file <\/span><\/h3>\n<p><span style=\"font-weight: 400;\">When you&#8217;ve tried various methods to resolve the &#8220;jQuery is not defined&#8221; error or similar JavaScript issues in WordPress without success, disabling script concatenation can be a useful troubleshooting step. Script concatenation is a WordPress feature that combines multiple JavaScript files into a single request to improve load times. However, this can sometimes cause errors or lead to script loading issues, especially if there&#8217;s a conflict or a specific script isn&#8217;t loading correctly.<\/span><\/p>\n<h4><span style=\"font-weight: 400;\">Editing the wp-config.php file<\/span><\/h4>\n<p><span style=\"font-weight: 400;\">Use an FTP client or the file manager provided by your web hosting control panel to access your WordPress site&#8217;s files.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Open the <\/span><b>wp-config.php<\/b><span style=\"font-weight: 400;\"> file in a text editor. If you&#8217;re using an FTP client, you&#8217;ll need to download the file first, open it with a text editor on your computer, and then upload it back after editing. If you&#8217;re using a file manager in a web hosting control panel, you can usually edit the file directly in your browser.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Scroll to the bottom of the file, just before the line that reads <\/span><b>\/* That&#8217;s all, stop editing! Happy blogging. *\/<\/b><span style=\"font-weight: 400;\">. Here, paste the following code snippet:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\"> <\/span> \/** Absolute path to the WordPress directory. *\/\r\n\r\n if ( !defined('ABSPATH') )\r\n\r\n define('ABSPATH', dirname(__FILE__) . '\/');\r\n\r\n define('CONCATENATE_SCRIPTS', false);<\/pre>\n<p><span style=\"font-weight: 400;\">After adding the snippet, save your changes. If you&#8217;re editing the file locally on your computer, make sure to upload it back to the server, replacing the existing <\/span><b>wp-config.php<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h4><span style=\"font-weight: 400;\">Understanding the snippet<\/span><\/h4>\n<p><b>ABSPATH definition<\/b><span style=\"font-weight: 400;\">: This line ensures the absolute path to the WordPress directory is correctly defined, which is a fundamental requirement for WordPress to operate correctly.<\/span><\/p>\n<p><b>Disabling concatenation<\/b><span style=\"font-weight: 400;\">: The `define(&#8216;CONCATENATE_SCRIPTS&#8217;, false);` line explicitly tells WordPress not to link scripts. This can help with debugging script issues by loading each script individually, making it easier to identify which script might be causing problems.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Manually add jQuery library <\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Manually including the jQuery library directly in your WordPress theme&#8217;s<\/span><b> header.php<\/b><span style=\"font-weight: 400;\"> file is a straightforward approach, especially when other methods to resolve jQuery-related issues haven&#8217;t been successful. This method ensures that jQuery is loaded early in the page rendering process, reducing the risk of &#8220;jQuery is not defined&#8221; errors. <\/span><\/p>\n<h4><span style=\"font-weight: 400;\">How to manually include the jQuery library<\/span><\/h4>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Go to the <\/span><a href=\"https:\/\/developers.google.com\/speed\/libraries#jquery\"><span style=\"font-weight: 400;\">Google Hosted Libraries<\/span><\/a><span style=\"font-weight: 400;\"> page to access the latest version of jQuery. <\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Find the most recent version of jQuery listed on the page and copy the script tag provided. T<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Use an FTP client or the file manager provided by your hosting service to access your WordPress site\u2019s files.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Within your WordPress directory, go to <\/span><b>wp-content\/themes\/your-theme-folder\/<\/b><span style=\"font-weight: 400;\"> and find the <\/span><b>header.php<\/b><span style=\"font-weight: 400;\"> file. <\/span><span style=\"font-weight: 400;\">Replace <\/span><b>your-theme-folder <\/b><span style=\"font-weight: 400;\">with the actual name of your theme.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Open the <\/span><b>header.php<\/b><span style=\"font-weight: 400;\"> file in a text editor. If you\u2019re using a file manager through your web hosting control panel, you may be able to edit the file directly in your browser.<\/span><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Header-php-file-in-the-theme-folder.jpg\" alt=\"Header php file in the theme folder accessed via FTP client.\" width=\"1560\" height=\"875\" class=\"alignnone size-full wp-image-34457\" style=\"width: 743.984px;\" srcset=\"https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Header-php-file-in-the-theme-folder.jpg 1560w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Header-php-file-in-the-theme-folder-742x416.jpg 742w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Header-php-file-in-the-theme-folder-1484x832.jpg 1484w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Header-php-file-in-the-theme-folder-150x84.jpg 150w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Header-php-file-in-the-theme-folder-768x431.jpg 768w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Header-php-file-in-the-theme-folder-1536x862.jpg 1536w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Header-php-file-in-the-theme-folder-371x208.jpg 371w, https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/Header-php-file-in-the-theme-folder-600x337.jpg 600w\" sizes=\"auto, (max-width: 1560px) 100vw, 1560px\" \/><\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Paste the jQuery script tag you copied from Google Hosted Libraries right after the opening <\/span><b>&lt;head&gt;<\/b><span style=\"font-weight: 400;\"> tag in your <\/span><b>header.php<\/b><span style=\"font-weight: 400;\"> file. Placing it near the top of the head section ensures that jQuery is loaded early and is available to any scripts that depend on it.<\/span><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">For example,<\/span><\/p>\n<pre><span style=\"font-weight: 400;\"> <\/span>&lt;head&gt;\r\n\r\n &lt;script src=\"https:\/\/ajax.googleapis.com\/ajax\/libs\/jquery\/3.5.1\/jquery.min.js\"&gt;&lt;\/script&gt;\r\n\r\n &lt;!-- Your other head content below --&gt;<\/pre>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">After adding the script tag, save the <\/span><b>header.php<\/b><span style=\"font-weight: 400;\"> file. If you edited the file locally on your computer, don\u2019t forget to upload it back to the server, replacing the old version of the file.<\/span><\/li>\n<\/ol>\n<h4><span style=\"font-weight: 400;\">Important considerations<\/span><\/h4>\n<p><b>Child theme<\/b><span style=\"font-weight: 400;\">: If you&#8217;re making changes to a theme directly, it&#8217;s best practice to use a child theme. This prevents your changes from being overwritten when the parent theme is updated.<\/span><\/p>\n<p><b>Test your site<\/b><span style=\"font-weight: 400;\">: After adding jQuery manually, thoroughly test your site to ensure that scripts are running as expected and that there are no compatibility issues.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Closing thoughts<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">In our blog, we navigated through various solutions to address the &#8220;jQuery is not defined&#8221; error, emphasizing the importance of ensuring jQuery is correctly loaded and implemented on a website. We covered verifying jQuery&#8217;s presence through page source inspection and the browser&#8217;s Network tab, and we discussed enhancing site reliability with a Google-hosted jQuery complemented by a local fallback. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Additionally, we explored advanced WordPress troubleshooting techniques, such as disabling script concatenation in the <\/span><b>wp-config.php<\/b><span style=\"font-weight: 400;\"> file and manually adding jQuery to the <\/span><b>header.php<\/b><span style=\"font-weight: 400;\"> file of a theme. Throughout, the emphasis was placed on cautious editing practices, including using staging environments and child themes for safe modifications, to maintain website functionality and user experience.<\/span><\/p>\n\r\n<style>\r\n  #ctablocks_inline_90{\r\n          background-color: #000000;\r\n        color: #ffffff;\r\n    border-radius: 6px;\r\n  }\r\n\r\n  #ctablocks_inline_90 p{\r\n    color: #ffffff;\r\n  }\r\n  #ctablocks_inline_90 .button{\r\n        background-color: rgb(51,57,241);\r\n      color: #ffffff;\r\n    border-color: #3339f1 !important;\r\n  }\r\n  #ctablocks_inline_90 .button:hover{\r\n    background: rgba(51,57,241,0.8);\r\n    color: #ffffff;\r\n    opacity: 1;\r\n  }\r\n        #ctablocks_inline_90 .ctablocks_content_info p {\r\n        padding-left: 36px;\r\n      }\r\n      #ctablocks_inline_90 .ctablocks_content_button {\r\n          margin-left: 37px;\r\n      }\r\n  @media screen and (min-width: 768px) and (max-width: 1260px) {\r\n      #ctablocks_inline_90 .ctablocks_content_button {\r\n          margin-left: 37px !important;\r\n      }\r\n  }\r\n  ;\r\n<\/style>\r\n<div id=\"ctablocks_inline_90\" class=\"ctablocks_container inline_type\r\n        \">\r\n\r\n  <div class=\"ctablocks_content clear\">\r\n    <div class=\"ctablocks_content_info\">\r\n      \r\n            <div class=\"title-wrap\">\r\n\t\t\t\t\t                  <img decoding=\"async\" src=\"https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/04\/info-icon-cta.png\" alt=\"Say goodbye to website errors\" title=\"Say goodbye to website errors\">\r\n\t\t\t\t\t            <h4>Say goodbye to website errors<\/h4>\r\n        <\/div>\r\n              <p>Achieve peace of mind with 99.99% uptime on 10Web Managed <br>WordPress Hosting, powered by Google Cloud. <\/p>\r\n          <\/div>\r\n    <div class=\"ctablocks_content_button\">\r\n              <a href=\"https:\/\/10web.io\/ai-website-builder\/\" class=\"button\" data-gtag=\"sign-up-blog\" data-buttontype=\"sign-up\" data-gtag=\"cta-90\" data-buttontype=\"cta-inline\"\r\n\t        >Learn How<\/a>\r\n            \r\n    <\/div>\r\n  <\/div>\r\n    <\/div>\r\n\n<p>\r\n<style>\r\n  #ctablocks_scrollbox-with-icon_89{\r\n            color: #ffffff;\r\n    border-radius: 6px;\r\n  }\r\n\r\n  #ctablocks_scrollbox-with-icon_89 p{\r\n    color: #ffffff;\r\n  }\r\n  #ctablocks_scrollbox-with-icon_89 .button{\r\n          background-color: rgb(51,57,241);\r\n        color: #ffffff;\r\n    border-color: #3339f1 !important;\r\n  }\r\n  #ctablocks_scrollbox-with-icon_89 .button:hover{\r\n    background: rgba(51,57,241,0.8);\r\n    color: #ffffff;\r\n    opacity: 1;\r\n  }\r\n  #ctablocks_scrollbox-with-icon_89.ctablocks_container {\r\n    left: 100%;\r\n  }\r\n  @media screen and (max-width: 1300px) {\r\n      #ctablocks_scrollbox-with-icon_89.ctablocks_container {\r\n          left: 0;\r\n          margin: 0 auto;\r\n      }\r\n  }\r\n  #ctablocks_scrollbox-with-icon_89 .ctablocks_content {\r\n      background-color: #000000;\r\n  }\r\n<\/style>\r\n<div id=\"ctablocks_scrollbox-with-icon_89\" class=\"ctablocks_container scrollbox-with-icon_type\r\n      \">\r\n\r\n  <div class=\"ctablocks_content clear\">\r\n    <div class=\"ctablocks_content_info\">\r\n              <h4>Say goodbye to website errors<\/h4>\r\n        <h4 class=\"mobile-title\">Fix all the website errors in one click<\/h4>\r\n              <p>Migrate your website to the world's best Managed WordPress Hosting.<\/p>\r\n          <\/div>\r\n    <div class=\"ctablocks_content_button\">\r\n              <a href=\"https:\/\/10web.io\/ai-website-builder\/\" class=\"button\" data-gtag=\"sign-up-blog\" data-buttontype=\"sign-up\" data-gtag=\"cta-89\" data-buttontype=\"cta-scrollbox-with-icon\"\r\n\t        >Migrate For Free<\/a>\r\n            \r\n    <\/div>\r\n  <\/div>\r\n    <span class=\"close_ctablocks\">\r\n      <img decoding=\"async\" class=\"close-icon\" src=\"https:\/\/10web.io\/blog\/wp-content\/plugins\/cta-blocks\/assets\/images\/close_w.svg\" class=\"close\">\r\n      <img decoding=\"async\" class=\"floating-icon\" src=\"https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/04\/Info-icon_Blog.png\" alt=\"Say goodbye to website errors\" title=\"Say goodbye to website errors\">\r\n<!--      <img decoding=\"async\" class=\"arrow-icon white\" src=\"\/cta-blocks\/assets\/images\/arrow-icon.svg\" class=\"close\">\r\n-->      <img decoding=\"async\" class=\"arrow-icon purple\" src=\"https:\/\/10web.io\/blog\/wp-content\/plugins\/cta-blocks\/assets\/images\/arrow-icon-purple.svg\" class=\"close\">\r\n  <\/span>\r\n<\/div>\r\n<br \/>\n <\/p>\n","protected":false},"excerpt":{"rendered":"<p>The &#8220;jQuery is Not Defined&#8221; error is a common hurdle encountered in web development, especially for those new to integrating jQuery, a widely used JavaScript library, into web pages. This error message pops up in the browser&#8217;s console when the JavaScript code attempts to utilize jQuery syntax or functions before the library has been loaded, or if it hasn&#8217;t been&#8230;<\/p>\n","protected":false},"author":39,"featured_media":34468,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"two_page_speed":[],"footnotes":"","tenweb_blog_toc":"<ul>\r\n\t<li>\r\n\t\t<a href=\"#variations-of-the-error\">Variations of the error<\/a>\r\n\t<\/li>\r\n\t<li>\r\n\t\t<a href=\"#understanding-jquery-is-not-defined-in-wordpress\">Understanding \"jQuery is Not Defined\" in WordPress<\/a>\r\n\t<\/li>\r\n\t<li>\r\n\t\t<a href=\"#common-causes-of-this-error-in-wordpress\">Common causes of this error in WordPress<\/a>\r\n\t<\/li>\r\n\t<li>\r\n\t\t<a href=\"#general-causes-of-this-error\">General causes of this error<\/a>\r\n\t<\/li>\r\n\t<li>\r\n\t\t<a href=\"#how-to-fix-the-jquery-is-not-defined-error\">How to fix the jQuery is not defined error<\/a>\r\n\t\t<ul>\r\n\t\t\t<li>\r\n\t\t\t\t<a href=\"#verify-jquery-is-loaded-by-testing-the-script-source\">Verify jQuery is loaded by testing the script source<\/a>\r\n\t\t\t<\/li>\r\n\t\t\t<li>\r\n\t\t\t\t<a href=\"#alternate-methods-to-verify-jquery-loading\">Alternate methods to verify jQuery loading<\/a>\r\n\t\t\t<\/li>\r\n\t\t\t<li>\r\n\t\t\t\t<a href=\"#ensure-jquery-is-correctly-included-in-wordpress\">Ensure jQuery is correctly included in WordPress<\/a>\r\n\t\t\t<\/li>\r\n\t\t\t<li>\r\n\t\t\t\t<a href=\"#implement-a-local-fallback-with-google-hosted-jquery\">Implement a local fallback with Google hosted jQuery<\/a>\r\n\t\t\t<\/li>\r\n\t\t\t<li>\r\n\t\t\t\t<a href=\"#add-a-snippet-to-wp-config-php-file\">Add a snippet to wp-config.php file<\/a>\r\n\t\t\t<\/li>\r\n\t\t\t<li>\r\n\t\t\t\t<a href=\"#manually-add-jquery-library\">Manually add jQuery library<\/a>\r\n\t\t\t<\/li>\r\n\t\t<\/ul>\r\n\t<\/li>\r\n\t<li>\r\n\t\t<a href=\"#closing-thoughts\">Closing thoughts<\/a>\r\n\t<\/li>\r\n<\/ul>\r\n","tenweb_blog_competitor_type":"","tenweb_blog_competitor_names":"","tenweb_blog_twb_version":0,"tenweb_blog_type":""},"categories":[500],"tags":[],"class_list":["post-34449","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-http-errors"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.0 (Yoast SEO v23.0) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Resolved] jQuery is Not Defined Error<\/title>\n<meta name=\"description\" content=\"Learn how to tackle the &quot;jQuery is Not Defined&quot; error in web development. Understand why this error occurs and how to resolve it effectively.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/10web.io\/blog\/resolving-the-jquery-is-not-defined-error\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Resolving the jQuery is Not Defined&quot; Error\" \/>\n<meta property=\"og:description\" content=\"Learn how to tackle the &quot;jQuery is Not Defined&quot; error in web development. Understand why this error occurs and how to resolve it effectively.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/10web.io\/blog\/resolving-the-jquery-is-not-defined-error\/\" \/>\n<meta property=\"og:site_name\" content=\"10Web - Build &amp; Host Your WordPress Website\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/10Web.io\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-27T15:55:25+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-11-14T11:28:17+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/10web.io\/blog\/wp-content\/uploads\/sites\/2\/2024\/03\/jQuery-not-defined.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1560\" \/>\n\t<meta property=\"og:image:height\" content=\"875\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Sergey Markosyan\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@10Web_io\" \/>\n<meta name=\"twitter:site\" content=\"@10Web_io\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Sergey Markosyan\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"12 minutes\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"[Resolved] jQuery is Not Defined Error","description":"Learn how to tackle the \"jQuery is Not Defined\" error in web development. Understand why this error occurs and how to resolve it effectively.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/10web.io\/blog\/resolving-the-jquery-is-not-defined-error\/","og_locale":"en_US","og_type":"article","og_title":"Resolving the jQuery is Not Defined\" Error","og_description":"Learn how to tackle the \"jQuery is Not Defined\" error in web development. 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