How to Fix the 'Uncaught TypeError: a.indexOf is not a function' Error in Foundation Projects?

Troubleshooting "Uncaught TypeError: a.indexOf is not a function" Error in Foundation Projects

In a newly initialized Foundation project, opening index.html may result in the "Uncaught TypeError: a.indexOf is not a function" error originating from jquery.min.js. This issue arises due to the usage of deprecated jQuery event aliases in the codebase.

Solution:

The underlying cause of the error is the use of outdated jQuery event aliases such as .load(), .unload(), or .error(). These aliases have been deprecated since jQuery version 1.8 and should be replaced with the .on() method when declaring event listeners.

Procedure:

1. Inspect the codebase for the deprecated event aliases mentioned above.
2. Replace the deprecated aliases with the .on() method to ensure proper functionality:

// Replace deprecated code:
$(window).load(function(){...});

// With updated code:
$(window).on('load', function(){ ...});

After implementing the corrective code updates, the "Uncaught TypeError: a.indexOf is not a function" error should no longer appear when opening index.html in Chrome.

The above is the detailed content of How to Fix the 'Uncaught TypeError: a.indexOf is not a function' Error in Foundation Projects?. For more information, please follow other related articles on the PHP Chinese website!