Allow only numbers and decimal values Using AngularJs

This sample code allow you to insert values only with digits and decimal values with 2 decimals.

by Pankaj Sapkal

HTML

<div ng-app="myApp">
  <h2>Validate Price</h2>
  <div ng-controller="MainCtrl">

      <input type="text" ng-model="salary" valid-number />
  </div>
</div>

JavaScript

var app = angular.module('myApp', []);

    app.controller('MainCtrl', function($scope) {
    });

    app.directive('validNumber', function() {
      return {
        require: '?ngModel',
        link: function(scope, element, attrs, ngModelCtrl) {
          if(!ngModelCtrl) {
            return; 
          }

          ngModelCtrl.$parsers.push(function(val) {
            if (angular.isUndefined(val)) {
                var val = '';
            }
            var clean = val.replace(/[^0-9\.]/g, '');
            var decimalCheck = clean.split('.');

            if(!angular.isUndefined(decimalCheck[1])) {
                decimalCheck[1] = decimalCheck[1].slice(0,2);
                clean =decimalCheck[0] + '.' + decimalCheck[1];
            }

            if (val !== clean) {
              ngModelCtrl.$setViewValue(clean);
              ngModelCtrl.$render();
            }
            return clean;
          });

        }
      };
    });