html5

Description

On mac, tapping the touchpad may be interpreted in two ways and thus, passed down to the browser in different ways (briefly discussed here), but one of them is not accounted for in Dom.isSingleLeftClick.
More specifically, when button === 0 && buttons === 1.
Therefore,

I was trying to add formula SUM(G2:H2) which will result to I2, but the result goes to I3 and the header column is automatically becoming "8".

Before

let worksheets = {};
for (const sheetName of workbook.SheetNames) {
worksheets[sheetName] =

Not a single form field has a label. These designs are not usable and the patterns presented should be discouraged.

I suggest adding a validation check like Nu Validator, aXe, lighthouse, etc. to show all the places this markup is invalid.