jquery:input field validation allow numeric with and without decimal

The jquery validation to input field to allow only numeric value with or without numeric value on keypress and on blur with regrex to validate it.

<span>Float</span>
<input type="text" name="numeric" class='allownumericwithdecimal'>
<div>Numeric values only allowed  (With Decimal Point) </div>  
    <br/>   <br/>   <br/>
 
 <span>Int</span>
<input type="text" name="numeric" class='allownumericwithoutdecimal'>
<div>Numeric values only allowed  (Without Decimal Point) </div>



$(".allownumericwithdecimal").on("keypress keyup blur",function (event) {
            //this.value = this.value.replace(/[^0-9\.]/g,'');
     $(this).val($(this).val().replace(/[^0-9\.]/g,''));
            if ((event.which != 46 || $(this).val().indexOf('.') != -1) && (event.which < 48 || event.which > 57)) {
                event.preventDefault();
            }
        });

 $(".allownumericwithoutdecimal").on("keypress keyup blur",function (event) {  
           $(this).val($(this).val().replace(/[^\d].+/, ""));
            if ((event.which < 48 || event.which > 57)) {
                event.preventDefault();
            }
        });