function doesExists(welInput, sURL){

            $.ajax({
                "url": sURL + welInput.val()
            }).done(function(htData){
                if(htData.isExist === true){
                    showErrorMessage(welInput, Messages("validation.duplicated"));
                } else if (htData.isReserved == true) {
                    showErrorMessage(welInput, Messages("validation.reservedWord"));
                } else {
                    hideErrorMessage(welInput);
                }
            });
        }
@param {Wrapped Element} welInput
@param {String} sURL