Javascript Calculator Project Question

Exactly what does the test runs expect the display to work when I code the calculator.

I’m specifically talking about test case #10.

For reference, here’s my new CodePen for this project: https://codepen.io/CasualWanderer20XX/pen/ByoLGjB?editors=0110

My calculator doesn’t begin with multiple zeros, but the test case isn’t fulfilled.

What’s the problem?

A link to this might fcc project might help, try writing this in vscode i have done this several times than transferred to code
pen.