Javascript spreadsheet project is not working as expected

JavaScript
1

There is an issue with the evalFormula that expects arrays but the code is designed to return strings, also I added optional support for lower case cell Ids in input, I changed update function to the code below and it works perfectly fine:

const update = event => {
  const element = event.target;
  let value = element.value.replace(/\s/g, "").toUpperCase();
  if (!value.includes(element.id) && value.startsWith('=')) {
   const inputs = Array.from(document.querySelectorAll("#container input"));
   const cells = inputs.map(input => ({ id: input.id, value: input.value }));

   element.value = evalFormula(value.slice(1), cells);

  }
}

please comment your opinions for further improvements.

2

can you add more context to your question? it is really difficult to know what’s going on with the amount of infos you have shared