判断数字和小数点

MaxLength="11" onkeyup="this.value=this.value.replace(/\D/g,'')" onafterpaste="this.value=this.value.replace(/\D/g,'')"

maxlength="8" onkeyup="this.value=this.value.replace(/[^\d.]/g,'')" onafterpaste="this.value=this.value.replace(/[^\d.]/g,'')"