In angularJs ng-model i m binding with some name with ++ operator like
<div ng-app="myApp" ng-controller="myCtrl">
<input type="text" ng-model="firstname++hkjnh">
{{firstname+" "+lastname}}
</div>
output -> FirstName0 from where 0 comes in text
or
<div ng-app="myApp" ng-controller="myCtrl">
<input type="text" ng-model="+124343">
{{firstname+" "+lastname}}
</div>
output ->124343
so plese tell me how angular work with these type of things
ng-model directive we are using for two way binding. That's just a variable, we can get corresponding value in controller. Refer
https://plnkr.co/edit/AEblZEuiEL8mzvsFoz8M?p=preview
angular.module('inputExample', [])
.controller('ExampleController', ['$scope', function($scope) {
$scope.val++a = '1';
}]);
<input ng-model="val++a" ng-pattern="/^\d+$/" name="anim" class="my-input"
aria-describedby="inputDescription" />
ng-model="firstname++hkjnh" trying to create an variable with controller as $scope.firstname++hkjnh, since in js variable name can't hold any type of operator it will generate an error.
here ++ operator trying to evaluate with RHS value which is undefined,hence model value will be uncertain(varies on machine to machine).
In 2nd case model just evaluate the value(only with numeric value).
