I have multiple inputs which allow a single digit numeric value. The script below confirms the the value is a number. 

How can I move focus to the next input when a valid number has been input?

```
<input type="text" maxlength="1" onkeypress="return isNumber(event)" required>

```

```
function isNumber(evt) {
    evt = (evt) ? evt : window.event;
    var charCode = (evt.which) ? evt.which : evt.keyCode;
    if (charCode > 31 && (charCode < 49 || charCode > 53)) {
        return false;
    }
    return true;
}

```