<input
type="number"
min="1"
step="1"
onkeypress="return event.keyCode === 8
|| event.charCode >= 48 && event.charCode <= 57">
<input
type="number"
min="1"
step="1"
onkeypress="return event.keyCode === 8
|| event.charCode >= 48 && event.charCode <= 57">