angularjs笔记(二)

4、AngularJS过滤器

　　使用一个管道符（|）添加到表达式和指令中

　　例1、格式化字母转为大写

<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>

</head>

<body>

<div ng-app="myApp" ng-controller="personCtrl">

<p>姓名为 {{ lastName | uppercase }}</p>

<input type="text" ng-model="lastName | uppercase"/>

</div>

<script type="text/javascript">

angular.module('myApp',[]).controller('personCtrl',function($scope){

    $scope.lastName='Joe';

});

</script>

</body>

</html>

格式化为大写字母

　　例2、数组中过滤数据

<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>

</head>

<body>

<div ng-app="myApp" ng-controller="namesCtrl">

<p>输入过滤:</p>

<p><input type="text" ng-model="filter"></p>

<ul>

  <li ng-repeat="x in names | filter:filter | orderBy:'country'">

    {{ (x.name | uppercase) + ', ' + x.country }}

  </li>

</ul>

<p ng-repeat="x in names | filter:'L'">{{x.name}}</p>

</div>

<script type="text/javascript">

    angular.module('myApp',[]).controller('namesCtrl',function($scope){

    $scope.names=[{name:'Lily',country:'America'},{name:'LiMing',country:'China'},{name:'John',country:'Canada'}];

    });

</script>

</body>

</html>

过滤数据

　　自定义过滤器

<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>

</head>

<body>

<div ng-app="myApp">

自定义过滤器:

<h1>{{'aaa' | myFormat}}</h1>

</div>

<script>

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

app.filter('myFormat',function(){

return function(str){

return str.toUpperCase();

}

});

</script>

</body>

</html>

自定义过滤器转大写

5、AngularJS服务

　　AngularJS创建的javascript函数或对象，作用域AngularJS应用程序内

　　例1、$location服务，返回当前页面URL地址。AngularJS 会一直监控应用，处理事件变化， AngularJS 使用 $location 服务比使用 window.location 对象更好。

<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>

</head>

<body>

<div ng-app="myApp" ng-controller="myCtrl">

<p> 当前页面的url:</p>

<h3>{{myUrl}}</h3>

</div>

<p>该实例使用了内建的 $location 服务获取当前页面的 URL。</p>

<script>

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

app.controller('myCtrl', function($scope, $location) {

    $scope.myUrl = $location.absUrl();

});

</script>

</body>

</html>

$location服务

　　例2、$http服务，向服务器发请求，并响应返回数据

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

app.controller('myCtrl', function($scope, $http) {

  $http.get("请求地址").then(function (response) {

      $scope.responseData = response.data;

  });

});

$http.get方法使用

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

app.controller('myCtrl', function($scope, $http) {

  $http.post("请求地址",{键值对数据}).then(function (data, status, headers, config) {

  }).error(function(data, status, headers, config){

});

});

$http.post方法使用

　　例3、创建自定义服务

<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>

</head>

<body>

<div ng-app="myApp" ng-controller="myCtrl">

<input type="text" ng-model="params"/>

<h1>{{func(params)}}</h1>

<h1>{{result}}</h1>

</div>

<script>

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

app.service('selService', function() {

    return function(x){

    return x-0+1;

    }

});

app.controller('myCtrl', function($scope, selService) {

    $scope.func = selService;

    $scope.result=selService(5);

});

</script>

</body>

</html>

返回函数的服务

<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>

</head>

<body>

<div ng-app="myApp" ng-controller="myCtrl">

<p>{{selService.result1(5)}}</p>

<p>{{selService.result2(7)}}</p>

</div>

<script>

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

app.service('selService', function() {

    this.result1 = function (x) {

        return x-0+1;

    };

    this.result2=function(x){

        return x-0-1

    }

});

app.controller('myCtrl', function($scope, selService) {

  $scope.selService = selService;

});

</script>

</body>

</html>

返回对象的服务

　　例3、自定义过滤器中使用自定义服务

<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>

</head>

<body>

<div ng-app="myApp">

在过滤器中使用服务:

<h1>{{255 | myFormat}}</h1>

</div>

<script>

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

app.service('hexafy', function() {

    this.myFunc = function (x) {

        return x.toString(16);

    }

});

app.filter('myFormat',['hexafy', function(hexafy) {

    return function(x) {

        return hexafy.myFunc(x);

    };

}]);

</script>

</body>

</html>

自定义过滤器中使用自定义服务

6、AngularJS Select　　

<!DOCTYPE html>

<html>

<head>

    <meta charset="utf-8">

    <script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>

</head>

<body>

<div ng-app="myApp" ng-controller="myController">

    <select ng-model="selectedName" ng-options="x for x in names"></select>

</div>

<script>

    angular.module('myApp', []).controller('myController', function ($scope) {

        $scope.names = ['Tom', 'John', 'Lily'];

        $scope.selectedName='John';

    });

</script>

</body>

</html>

ng-options创建选择框

<!DOCTYPE html>

<html>

<head>

    <meta charset="utf-8">

    <script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>

</head>

<body>

<div ng-app="myApp" ng-controller="myController">

    <select ng-model="selectedName">

        <option ng-repeat="x in names">{{x}}</option>

    </select>

</div>

<script>

    angular.module('myApp', []).controller('myController', function ($scope) {

        $scope.names = ['Tom', 'John', 'Lily'];

        $scope.selectedName='John';

    });

</script>

</body>

</html>

ng-repeat创建选择框

ng-options和ng-repeat比较，ng-options更灵活一些，ng-repeat选择的是一个字符串，而ng-options对字符串数组选择的是字符串，对对象数组则选择的是对象

<!DOCTYPE html>

<html>

<head>

    <meta charset="utf-8">

    <script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>

</head>

<body>

<div ng-app="myApp" ng-controller="myController">

    <select ng-model="selectedSite" ng-options="x.site for x in sites"></select>

</div>

<script>

    angular.module('myApp', []).controller('myController', function ($scope) {

        $scope.sites = [

            {site : "Google", url : "http://www.google.com"},

            {site : "Runoob", url : "http://www.runoob.com"},

            {site : "Taobao", url : "http://www.taobao.com"}

        ];

        $scope.selectedSite=$scope.sites[1];

    });

</script>

</body>

</html>

ng-options通过对象数组创建选择框

<!DOCTYPE html>

<html>

<head>

    <meta charset="utf-8">

    <script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>

</head>

<body>

<div ng-app="myApp" ng-controller="myController">

    <select ng-model="selectedSite">

        <option ng-repeat="x in sites" value="{{x.url}}">{{x.site}}</option>

    </select>

</div>

<script>

    angular.module('myApp', []).controller('myController', function ($scope) {

        $scope.sites = [

            {site : "Google", url : "http://www.google.com"},

            {site : "Runoob", url : "http://www.runoob.com"},

            {site : "Taobao", url : "http://www.taobao.com"}

        ];

        $scope.selectedSite=$scope.sites[1].url;

    });

</script>

</body>

</html>

ng-repeat通过对象数组创建选择框

上面ng-options操作的是数组，下面操作对象

<!DOCTYPE html>

<html>

<head>

    <meta charset="utf-8">

    <script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>

</head>

<body>

<div ng-app="myApp" ng-controller="myController">

    <select ng-model="selectedSite" ng-options="x for (x,y) in sites"></select>

    <p>你的选择是：{{selectedSite}}</p>

</div>

<script>

    angular.module('myApp', []).controller('myController', function ($scope) {

        $scope.sites = {

            site01 : "Google",

            site02 : "Runoob",

            site03 : "Taobao"

        };

        $scope.selectedSite='Runoob';

    });

</script>

</body>

</html>

ng-options操作简单对象

<!DOCTYPE html>

<html>

<head>

    <meta charset="utf-8">

    <script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>

</head>

<body>

<div ng-app="myApp" ng-controller="myController">

    <select ng-model="selectedCar" ng-options="x for (x,y) in cars"></select>

    <p>你的选择是：{{selectedCar.brand}}</p>

</div>

<script>

    angular.module('myApp', []).controller('myController', function ($scope) {

        $scope.cars = {

            car01 : {brand : "Ford", model : "Mustang", color : "red"},

            car02 : {brand : "Fiat", model : "500", color : "white"},

            car03 : {brand : "Volvo", model : "XC90", color : "black"}

        };

        $scope.selectedCar=$scope.cars['car02'];

    });

</script>

</body>

</html>

ng-options操作复杂对象1

<!DOCTYPE html>

<html>

<head>

    <meta charset="utf-8">

    <script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>

</head>

<body>

<div ng-app="myApp" ng-controller="myController">

    <select ng-model="selectedCar" ng-options="y.brand for (x,y) in cars"></select>

    <p>你的选择是：{{selectedCar}}</p>

</div>

<script>

    angular.module('myApp', []).controller('myController', function ($scope) {

        $scope.cars = {

            car01 : {brand : "Ford", model : "Mustang", color : "red"},

            car02 : {brand : "Fiat", model : "500", color : "white"},

            car03 : {brand : "Volvo", model : "XC90", color : "black"}

        };

        $scope.selectedCar=$scope.cars['car02'];

    });

</script>

</body>

</html>

ng-options操作复杂对象2

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