Regex to replace everything except numbers and a decimal point

Use this:

document.getElementById(target).value = newVal.replace(/[^0-9.]/g, '');

Removing only decimal part can be done as follows:

number.replace(/(\.\d+)+/,'');

This would convert 13.6667px into 13px (leaving units px untouched).

Try this:

document.getElementById(target).value = newVal.replace(/^\d+(\.\d{0,2})?$/, "");

Check the link Regular Expression Demo

use the below reg exp

[a-z] + [^0-9\s.]+|\.(?!\d)

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