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

app.controller('MainCtrl', function($scope) {
  $scope.name = 'World';

  $scope.jobs = [{
    id: 1,
    jobName: "1"
  },{
    id: 2,
    jobName: "2"
  },{
    id: 3,
    jobName: "3"
  }]
});
<!DOCTYPE html>
<html ng-app="plunker">

  <head>
    <meta charset="utf-8" />
    <title>AngularJS Plunker</title>
    <script>document.write('<base href="' + document.location + '" />');</script>
    <link rel="stylesheet" href="style.css" />
    <script data-require="angular.js@1.3.x" src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.3.7/angular.js" data-semver="1.3.7"></script>
    <script src="app.js"></script>
  </head>

  <body ng-controller="MainCtrl">
   <form name="schedulerForm" class="form-horizontal">
            <div class="row">
                <div class="col-lg-12 col-md-12" ng-class="{'has-error' : schedulerForm.jobName.$invalid && !schedulerForm.jobName.$pristine }">
                    <h4 class="text-center">Assign Job Schedule</h4>                    
                        <select class="form-control" ng-change="getJobDetail(filterType)"
                            ng-model="filterType" id="jobName" required name="jobName">
                            <option value="">Select Job</option>
                            <option value="{{job.id}}" ng-selected="filterType == job.id"
                                ng-repeat="job in jobs" ng-disabled="jobStatus">{{job.jobName}}</option>
                        </select>                   
                </div>
            </div>
<button type="button" class="btn btn-primary" 
                                ng-click="assignSchedule()" ng-disabled="schedulerForm.$invalid">Save</button>
                                </form>
  </body>

</html>
/* Put your css in here */