Javascript calculator- feedback on code

Hi, all- I’m working on the javascript calculator project. I’ve completed a basic functional version of the code, and I was wondering if someone would take a look and see if there are any potential problems/ any any suggestions for refactoring to make it better? I haven’t really done the styling yet, just looking for feedback on the javascript/jquery part.

Here’s the link: https://codepen.io/paintingfire/pen/ybPOoQ