pc에서는 되는 스크립트가 모바일에서는 되지가 않네요;;;

<input type="text" onkeypress="return isNumberKey(event)" onkeyup="this.value=this.value.replace(/[\ㄱ-ㅎㅏ-ㅣ가-힣]/g, '');" class="form-control3 form-control-lg form-control-number" id="buysell-amount" name="bs-amount" value="" onpaste="javascript:return false;">

 

 

function isNumberKey(evt) {
    var charCode = (evt.which) ? evt.which : event.keyCode;
    if (charCode != 46 && charCode > 31 && (charCode < 48 || charCode > 57))
        return false;
    // Textbox value    
    var _value = event.srcElement.value;  
    var _pattern0 = /^\d*[.]\d*$/; 
    if (_pattern0.test(_value)) {
        if (charCode == 46) {
            return false;
        }
    }

    var _pattern2 = /^\d*[.]\d{8}$/;
    if (_pattern2.test(_value)) {
     alert("You can enter only up to eight decimal places.");
      return false;
    }  
    return true;
}