number.angularjs.js

// <input number-format type="text" ng-model="value" />

angular.module('module', [])
   .directive('numberFormat', function($filter) {
		return {
			require: 'ngModel',
			link: function(scope, element, attrs, ngModel) {

				var prepare = function(value) {
					var numb = Number(value);
					if (isNaN(numb)) {
						return value;
					}
					return Number(numb).toFixed(2);
				}
 
				var parse = function(viewValue, noRender) {
					if (!viewValue) {
						return viewValue;
					}
					var clean = String(viewValue).replace(/[^0-9.]+/g, '').replace(/\./g, '').replace(/,/g, '');
 
					if (!clean || clean.length == 0) {
						clean = '000';
					} else if (clean.length <= 2) {
						clean = '00' + clean
					}
					clean = clean.slice(0, -2) + '.' + clean.slice(-2);
 
					if (!noRender) {
						ngModel.doRender();
					}
					return Number(clean);
				}
 
				ngModel.$parsers.unshift(parse);
 
				ngModel.doRender = function() {
					var clean = parse(prepare(ngModel.$viewValue), true);
					
					if (!clean) {
						return element.val('0,00');
					}
					element.val($filter('number')(clean, 2));
				}

				scope.$watch(attrs.ngModel, function() {
					ngModel.doRender();
				});
			}
		}
	});