How to display input like “0.052” in calculator display?

I’m building calculator from the odin project. I have problem with addEventListener for buttons elements.
I have to handle situation when user input something like 0.53. I don’t know what condition i have to use in if statement for that to work.
Here is a link to my code:
Codepen link

I tried this code first but it didn’t work.

buttons.forEach((btn) =>
  btn.addEventListener("click", function (e) {
    displayValue = e.target.innerText;
    if (display.innerText.charAt(0) == 0 && display.innerText.charAt(1) == 0) {
      display.innerText = +[display.innerText].shift().toString();
      // display.innerText = display.innerText.replace(/^0+/, "");
    } else if (
      display.innerText.charAt(0) == 0 &&
      display.innerText.charAt(1) >= 1
    ) {
      display.innerText = +[display.innerText].shift().toString();
    }
    display.innerText = display.innerText + displayValue;
  })
);