Uncaught TypeError: Illegal invocation at init.e.fn.valid

Question

Sample Code snippet

 var joinedArr = ["first choice", "second choice"];
 $(joinedArr).valid();

The above code is throwing me Uncaught TypeError: Illegal invocation at init.e.fn.valid (https://builder-assets.unbounce.com/published-js/jquery-shims.bundle-deb76da.z.js:1:4815) at :1:14 Error

I am trying the stuff in unbounce