Only integers - Nice to know about input type numbers
HTML
<form>
<label for="mynum">Mynum:</label>
<input id="mynum" type="number"></input><!-- insert step="any" -->
<button type="submit" >Send</button>
</form>
<form>
<label for="mynum">Mynum:</label>
<input id="mynum" type="number"></input><!-- insert step="any" -->
<button type="submit" >Send</button>
</form>