AngularJS过滤器

1.过滤器可以使用一个管道字符(|)添加到表达式和指令中。

再次强调一点,所有的运行都要加入angularJS的库文件(类似JQuery的引用)

常见的AngularJS 过滤器

AngularJS过滤器

(1) lowercase和uppercase过滤器(大小写)

<div  ng-app="myApp" ng-controller="myCtrl">
<p>名字: {{userName|uppercase}}</p><!-- 转化为大写 -->
<p>姓氏: {{lastname|lowercase}}</p><!-- 转化为小写 -->
</div>
<script type="text/javascript">
var app = angular.module('myApp', []);
app.controller('myCtrl',function($scope){
$scope.userName ="hello yyy";
$scope.lastname = "REEfsnes";
});
</script>

结果如下:

AngularJS过滤器

(2)Currency过滤器(美元符号)

<div  ng-app="myApp" ng-controller="myCtrl">
<p>单价<input type="number" ng-model="price" /></p>
<p>数量<input type="number" ng-model="quantity"/> </p>
<h2 >总价为:{{(price*quantity) | currency}}</h2><!-- 表达式 -->
</div>
<script type="text/javascript">
var app = angular.module('myApp', []);
app.controller('myCtrl',function($scope){
$scope.price = 12;
$scope.quantity = 2;
});
</script>

结果如下:

AngularJS过滤器

(3)orderBy过滤器(排序数组)

<div ng-app="myApp" ng-controller="myCtrl">
<!-- 通过国家排序 -->
<p>通过国家排序</p>
<ul>
<li ng-repeat="x in names | orderBy:'country'">
{{ x.name + ', ' + x.country }}
</li>
</ul>
<!-- 通过名字排序 -->
<p>通过名字排序</p>
<ul>
<li ng-repeat="x in names | orderBy:'name'">
{{ x.name + ', ' + x.country }}
</li>
</ul>
</div>
<script type="text/javascript">
var app = angular.module('myApp', []);
angular.module('myApp', []).controller('myCtrl', function($scope) {
$scope.names = [{
name: 'Jemy',
country: 'Norway'
}, {
name: 'Peter',
country: 'Sweden'
}, {
name: 'Kaisa',
country: 'Denmark'
}];
});
</script>

结果如下:

AngularJS过滤器

(4)filter过滤器(过滤输入)

<div ng-app="myApp" ng-controller="myCtrl">
<p>输入过滤 <input type="text" ng-model="test"/ placeholder="请输入过滤的字符"></p>
<!-- 过滤输入后通过名字排序 -->
<ul>
<li ng-repeat="x in names| filter:test |orderBy:'name'">
{{ (x.name) + ', ' + x.country }}
</li>
</ul>
</div>
<script type="text/javascript">
var app = angular.module('myApp', []);
angular.module('myApp', []).controller('myCtrl', function($scope) {
$scope.names = [{
name: 'Jemy',
country: 'Norway'
}, {
name: 'Peter',
country: 'Sweden'
}, {
name: 'Kaisa',
country: 'Denmark'
}];
});

AngularJS过滤器

输入p后结果如下:

AngularJS过滤器

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