且ng-options必須搭配ng-model使用，否則將不會值新增至Select
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.3/angular.min.js"></script>
<script type="text/javascript">
var myApp = angular.module('myApp', []);
myApp.controller('myController', function($scope){
$scope.students = [
{'Name' : 'Wang', 'En' : 90, 'Ch' : 50, 'Math' : 70},
{'Name' : 'Chen', 'En' : 30, 'Ch' : 90, 'Math' : 100},
{'Name' : 'Fang', 'En' : 40, 'Ch' : 60, 'Math' : 10},
{'Name' : 'Hung', 'En' : 90, 'Ch' : 90, 'Math' : 90}];
$scope.selectIndex1 = 0;
$scope.selectIndex2 = 0;
$scope.selectIndex4 = 0;
});
</script>
<meta charset="utf8"/>
<title>Filter</title>
</head>
<body ng-app="myApp">
<div ng-controller="myController">
<!--沒有明確給予Value值!-->
<select ng-model="selectIndex1" ng-options="student['Name'] for student in students"></select><br>
<!--有明確給予Value值 且在Controller有宣告ng-model初始值!-->
<select ng-model="selectIndex2" ng-options="students.indexOf(student) as student['Name'] for student in students"></select><br>
<!--沒有明確給予Value值 但有預設的Option元素!-->
<select ng-model="selectIndex3" ng-options="students.indexOf(student) as student['Name'] for student in students"><option value="">請選擇</option></select><br>
<!--明確給予Value值 但用track沒辦法指定初始值!-->
<select ng-model="selectIndex4" ng-options="student['Name'] for student in students track by students.indexOf(student)"></select><br>
<!--沒有指定ng-model 不會將值新增至Select-->
<select ng-options="student['Name'] for student in students track by students.indexOf(student)"></select>
</div>
</body>
</html>
