敏感字过滤

<script>
    var app=angular.module("app",[]);
    app.filter("frl",function () {
        return function (mag,flag) {
            return mag.replace(/法|枪/g,flag);
        }
    });
    app.controller("ctr",function ($scope) {
        $scope.shu="";
    });
</script>

<input type="text" ng-model="shu">
<ul>
    <li>{{shu|frl:"*"}}</li>
</ul>