Text Input allow only Integer input in angularjs

Question

I want to set the html input[number] to allow only integer input (not float).

Basically, the html input

Answer 1

(function () {
    angular
    .module('urModule').directive('numbersOnly', numbersOnly);
    function numbersOnly() {
        return {
            require: 'ngModel',
            link: function (scope, element, attr, ngModelCtrl) {
                function fromUser(text) {
                    if (text) {
                        var transformedInput = text.replace(/[^0-9]/g, '');

                        if (transformedInput !== text) {
                            ngModelCtrl.$setViewValue(transformedInput);
                            ngModelCtrl.$render();
                        }
                        return transformedInput;
                    }
                    return undefined;
                }
                ngModelCtrl.$parsers.push(fromUser);
            }
        };
    }
})();