Angular Directive to Allow Natural Numbres Only in the input tag

decimalOnly.js

app.directive('decimalOnly', function () {
    return {
        require: 'ngModel',
        link: function (scope, element, attrs, modelCtrl) {

            modelCtrl.$parsers.push(function (inputValue) {
                if (inputValue == undefined) return ''
                console.log(inputValue)
                var transformedInput = inputValue.replace(/[^0-9\\.]/g, '');
                if (transformedInput != inputValue) {
                    modelCtrl.$setViewValue(transformedInput);
                    modelCtrl.$render();
                }

                return parseFloat(transformedInput);
            });
        }
    };
});