This seems not to be working for me. I've a `ng-repeat`,`ng-click` and `ng-class` on the `tr`. Clicking on the tr should toggle the class to `.error`. 

Currently clicking a `tr` will change the class of all the table rows.

```
<!doctype html>
<html lang="en" ng-app="studentApp">
<head>
    <meta charset="UTF-8">
    <style>
        .is-grey-true { background-color: #ccc; }
        .error { background-color: red; }
    </style>
    <script type="text/javascript" src="js/angular.min.js"></script>
</head>

<body ng-controller="StudentController">

    <table ng-hide="showTable">
        <tr ng-repeat="student in students" ng-class="{error : isGrey}" ng-click="toggleClass()">
            <td>{{student.id}}</td>
            <td>{{student.firstname}}</td>
            <td>{{student.lastname}}</td>
        </tr>
    </table>
<script type="text/javascript">
    var studentApp = angular.module('studentApp',[]);

    studentApp.controller('StudentController', function($scope){
        var students = [
            { id:1, firstname: 'Mahesh', lastname: 'Sapkal'},
            { id:2, firstname: 'Hardik', lastname: 'Joshi'},
            { id:3, firstname: 'Sagar', lastname: 'Mhatre'}
        ];
        $scope.isGrey = false;

        $scope.toggleClass = function () {
            $scope.isGrey = true;
        };
    });
</script>
</body>
</html>

```

[**JSFiddle**](http://jsfiddle.net/Jhz4D/)