The unset command in PHP works on any variable. PHP-To-Javascript converts it to the Javascript function delete, which only works on objects. This is okay for now as all arrays are currently created ...

Laracasts has a good package that we can use to pass PHP variables to Javascript.

JavaScript variables hold a wide variety of information and can be used with virtually any data type. Here's how to use variables to store numbers, text strings, objects, and more.