Escape Número de entrada exponencial em JS
isNumber= (e) => {
e = (e) ? e : window.event;
var charCode = (e.which) ? e.which : e.keyCode;
if ((charCode > 31 && (charCode < 48 || charCode > 57)) && charCode !== 46) {
e.preventDefault();
} else {
return true;
}
}
Innocent Ibex