JavaScript

Pointer events - Web APIs | MDN[^]:

Pointer events ... are designed to create a single DOM event model to handle pointing input devices such as a mouse, pen/stylus or touch (such as one or more fingers).

Richard Deeming wrote:

You may find it easier to rewrite the code to use pointer events instead of mouse / touch events.

Richard Deeming wrote:

Any extension that claims to be "Chrome dev tools" or similar is almost certainly malicious.

Richard Deeming wrote:

If you've installed an extension

String.prototype.replace() - JavaScript | MDN[^]:

A string pattern will only be replaced once. To perform a global search and replace, use a regular expression with the g flag, or use replaceAll()[^] instead.

word = word.replace(",", "");

word = word.replace(/,/g, "");

word = word.replaceAll(",", "");

12,345,678,901

fig0000 wrote:

You also describe a demo you set up to test this; is it possible for you to post it.

const formatNumber = () => {
	const word = txtbox.value.replaceAll(",", "");
	const number = BigInt(word); // instead of parseInt(word)
	const formatted = number.toLocaleString();
	txtbox.value = formatted;
};

const formatNumber = () => {
	const word = txtbox.value.replace(/[^0-9]/g, ""); // Strip out any non-numeric characters
	const chars = word.split("").reverse(); // Get an array of characters from right to left
	
    // Insert a comma after every third number:
	for (let index = 3; index < chars.length; index += 4) {
		chars.splice(index, 0, ",");
	}
	
    // Reverse the chars again, and convert back to a string:
	txtbox.value = chars.reverse().join("");
};

fig0000 wrote:

I tried adding “en-us” to the toLocaleString() as well as setting maxiumnsignificantdigits to 9

fig0000 wrote:

While we can get farther along he found that there is a point where negative digits are ignored and I've found some other issues.

JavaScript language overview - JavaScript | MDN[^]:

Number: used for all number values (integer and floating point) except for very big integers.
BigInt: used for arbitrarily large integers.