Additional Resources: Troubleshooting WordPress Errors
Posted: Tue Jan 07, 2025 3:42 am
How to fix "jQuery is not defined" error.
When you encounter this error, there are several ways to resolve it. Here are the most effective methods we use to solve this problem.
We recommend trying these strategies in no particular order, but if you want to start with a specific strategy, you can use the jump links below:
Check if jQuery is loaded correctly
Added jQuery fallback
Fix script loading order (advanced)
Edit wp-config.php to fix jQuery loading issues
Get premium support to fix errors for you
We’ll go over each method in detail and provide you with france phone number some additional resources for troubleshooting WordPress errors. Let’s get to the point!
1. Update WordPress, themes and plugins
Outdated software is one of the most common causes of "jQuery not defined" errors. Outdated themes or plugins may be incompatible with the latest version of WordPress, causing script conflicts. How to solve the problem:
First, make sure your WordPress core is up to date. If an update is available, go to Dashboard Updates and click Update to version XXX.
Update WordPress core
For more details, check out our complete guide on upgrading WordPress security to a new version.
WordPress plugin updates will be listed under Core Updates.
You can select them all and click "Update Plugins".
When you encounter this error, there are several ways to resolve it. Here are the most effective methods we use to solve this problem.
We recommend trying these strategies in no particular order, but if you want to start with a specific strategy, you can use the jump links below:
Check if jQuery is loaded correctly
Added jQuery fallback
Fix script loading order (advanced)
Edit wp-config.php to fix jQuery loading issues
Get premium support to fix errors for you
We’ll go over each method in detail and provide you with france phone number some additional resources for troubleshooting WordPress errors. Let’s get to the point!
1. Update WordPress, themes and plugins
Outdated software is one of the most common causes of "jQuery not defined" errors. Outdated themes or plugins may be incompatible with the latest version of WordPress, causing script conflicts. How to solve the problem:
First, make sure your WordPress core is up to date. If an update is available, go to Dashboard Updates and click Update to version XXX.
Update WordPress core
For more details, check out our complete guide on upgrading WordPress security to a new version.
WordPress plugin updates will be listed under Core Updates.
You can select them all and click "Update Plugins".