Validation In MVC and Angularjs

Question

Hi,

 

I am Posting My data on controller using Angularjs Now i want to Validate on Some Fields Can Some One Help me How can i do that.

 

 Angularjs 

$scope.savedata = function () {
    $scope.btn = true;
    $http({
        method: 'POST',
        url: '@Url.Action("LRData","GRPO")',
        data: { 'Docentry': $scope.grpo, 'batch': $scope.b }
    }).success(function (data) {
        alert(data);
    });
}

 Html

    <table class="table table-bordered table-hover">
        <thead class="thead-dark">
            <tr>
                <th>Item Code</th>
                <th>Description</th>
                <th>Quantity</th>
                <th>Batch No</th>
                <th>LR No</th>
                <th>LR Date</th>
            </tr>
        </thead>
        <tbody>
            <tr ng-repeat="t in b">
                <td class="bg-color">{{t.ItemCode}}</td>
                <td class="bg-color">{{t.Description}}</td>
                <td class="bg-color">{{t.Qty}}</td>
                <td class="bg-color">{{t.Batch}}</td>
                <td><input type="text" ng-model="t.LrN" class="form-control" /></td>
                <td><input type="date" ng-model="t.LrD" class="form-control" /></td>
            </tr>
        </tbody>
    </table>


<input type="button" value="Save" class="btn btn-outline-primary" ng-click="savedata()" ng-disabled="btn" />

 please Help me will be vary thakful