Formatting phone number with angular

format a 10 digit number with angularjs

by arjunasuresh3

HTML

<div ng-app>

    <div ng-controller="Ctrl">

        <label>Enter a telephone number to format:</label>
        <input ng-model="phoneNumber"  custom-validation /><br><br>
           Result formatted: {{ phoneNumber }}
    </div>
</div>

JavaScript

angular.module('ng').directive('customValidation', function(){
    function modtel(tel) {
        if (!tel) { return ''; }

        var value = tel.toString().trim().replace(/^\+/, '');

        if (value.match(/[^0-9]/)) {
            return tel;
        }

        var country, city, number;

        switch (value.length) {
            case 10: // +1PPP####### -> C (PPP) ###-####
                country = 1;
                city = value.slice(0, 3);
                number = value.slice(3);
                break;

            case 11: // +CPPP####### -> CCC (PP) ###-####
                country = value[0];
                city = value.slice(1, 4);
                number = value.slice(4);
                break;

            case 12: // +CCCPP####### -> CCC (PP) ###-####
                country = value.slice(0, 3);
                city = value.slice(3, 5);
                number = value.slice(5);
                break;

            default:
                return tel;
        }

        if (country == 1) {
            country = "";
        }

        number = number.slice(0, 3) + '-' + number.slice(3);

        return (country + " (" + city + ") " + number).trim();
    };
   return {
     require: 'ngModel',
     link: function(scope, element, attrs, modelCtrl) {

       modelCtrl.$parsers.push(function (inputValue) {

         var transformedInput = modtel(inputValue) 

         if (transformedInput!=inputValue) {
           modelCtrl.$setViewValue(transformedInput);
           modelCtrl.$render();
         }         

         return transformedInput;         
       });
          modelCtrl.$formatters.push(function (inputValue) {

         var transformedInput = modtel(inputValue) 

         if (transformedInput!=inputValue) {
           modelCtrl.$setViewValue(transformedInput);
           modelCtrl.$render();
         }         

         return transformedInput;         
       });
     }
   };
});

function Ctrl($scope){
    $scope.phoneNumber =  1234567890;

}