過濾器是用來更改修改數據，並且可以在表達式或使用管道符指令將其歸入。以下是常用的過濾器的清單。
小寫濾鏡
新增小寫的過濾器，使用管道符的表達式。在這裡添加小寫過濾器，以小寫字母列印學生姓名。
Enter first name:<input type="text" ng-model="student.firstName">
Enter last name: <input type="text" ng-model="student.lastName">
Name in Upper Case: {{student.fullName() | lowercase}}
貨幣濾波器
加幣過濾器使用管道符回傳數的表達式。在這裡，我們添加了過濾器，貨幣使用貨幣格式的列印費用。
Enter fees: <input type="text" ng-model="student.fees">
fees: {{student.fees | currency}}
過濾器的過濾器
要只顯示所需的主題，我們使用subjectName作為過濾器。
Enter subject: <input type="text" ng-model="subjectName">
Subject:
<ul>
<li ng-repeat="subject in student.subjects | filter: subjectName">
{{ subject.name + ', marks:' + subject.marks }}
</li>
</ul>
排序過濾器
要透過標記排序主題，我們使用orderBy標記。
Subject:
<ul>
<li ng-repeat="subject in student.subjects | orderBy:'marks'">
{{ subject.name + ', marks:' + subject.marks }}
</li>
</ul>
範例
下面的範例將展示上述所有的過濾器。
testAngularJS.html
<html>
<head>
<title>Angular JS Filters</title>
</head>
<body>
<h2>AngularJS Sample Application</h2>
<div ng-app="" ng-controller="studentController">
<table border="0">
<tr><td>Enter first name:</td><td><input type="text" ng-model="student.firstName"></td></tr>
<tr><td>Enter last name: </td><td><input type="text" ng-model="student.lastName"></td></tr>
<tr><td>Enter fees: </td><td><input type="text" ng-model="student.fees"></td></tr>
<tr><td>Enter subject: </td><td><input type="text" ng-model="subjectName"></td></tr>
</table>
<br/>
<table border="0">
<tr><td>Name in Upper Case: </td><td>{{student.fullName() | uppercase}}</td></tr>
<tr><td>Name in Lower Case: </td><td>{{student.fullName() | lowercase}}</td></tr>
<tr><td>fees: </td><td>{{student.fees | currency}}</td></tr>
<tr><td>Subject:</td><td>
<ul>
<li ng-repeat="subject in student.subjects | filter: subjectName |orderBy:'marks'">
{{ subject.name + ', marks:' + subject.marks }}
</li>
</ul>
</td></tr>
</table>
</div>
<script>
function studentController($scope) {
$scope.student = {
firstName: "Mahesh",
lastName: "Parashar",
fees:500,
subjects:[
{name:'Physics',marks:70},
{name:'Chemistry',marks:80},
{name:'Math',marks:65}
],
fullName: function() {
var studentObject;
studentObject = $scope.student;
return studentObject.firstName + " " + studentObject.lastName;
}
};
}
</script>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.15/angular.min.js"></script>
</body>
</html>
輸出
在網頁瀏覽器開啟textAngularJS.html，看到以下結果：
