How Do I Fix the 'Uncaught TypeError: a.indexOf is not a function' Error in My jQuery Project?

"Uncaught TypeError: a.indexOf is not a function" Error in New Foundation Project

This error stems from the use of deprecated jQuery event-aliases, specifically .load(), .unload(), or .error(). These functions have been obsolete since jQuery 1.8. To resolve this error, replace all instances of these deprecated aliases with the .on() method.

For example, if you had the following code:

<script>
$(window).load(function(){
  // code here
});
</script>

You would replace it with the following:

<script>
$(window).on('load', function(){
  // code here
});
</script>

By updating your code to use the proper event alias format, you should be able to eliminate the "Uncaught TypeError: a.indexOf is not a function" error.

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