My basic js calculator can't display the result

I think it may have to do with the $("#equals").click function, but I have not been figured out why when I press the equal sign, it didn’t display anything. Please advise! Thank you.
My codepen:

@ChuChuTran The link doesn’t work for me. Did you solve this problem? If not, share another link to the project and I’ll take a look.

This is my new codepen link for the calculator project:
I really want to know how I can chain more than 2 numbers and operators and display the final result with the equal sign. So far my calculator can only chain 2 numbers. Any thoughts are appreciated!