AngularJS filter basic

AngularJS filter basic

HTML

<div ng-app="myApp">
    <div ng-controller='Ctrl'>
        <textarea ng-model="textmainboard" ng-change="updateMainboard()">{{textmainboard|test}}</textarea>
    </div>
</div>

JavaScript

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

app.controller('Ctrl',['$scope','$rootScope',function($scope,$rootScope) {
    $scope.updateMainboard=function() {
    
        alert($scope.textmainboard);
    }
}]);

    app.filter('test', function() {
        return function(input) {
         return input;
        };
    });