Validate input decimals with comma

I would like to validate decimals with a comma, or how to add a comma to the allowed characters with this validation, I could validate integers but not decimals (with a comma)

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input class="enteros" type=text />
<input class="decimales" type=text />

$(function () {
            $('.enteros').on('input', function () {
                this.value = this.value.replace(/[^0-9]/g, '');
            });
        });


$(function () {
                $('.decimales').on('input', function () {
                    this.value = this.value.replace(/[^0-9]/g, '');
                });
            });