Angular.Js中过滤器filter与自定义过滤器filter实例详解

2019-11-19 16:38:34

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本文主要给大家介绍了Angular.Js过滤器filter与自定义过滤器filter的相关内容，分享出来供大家参考学习，下面来看看详细的介绍：

一、AngularJS的filter过滤器：

uppercase|lowercase:大小写转换过滤
json:json格式过滤
date:日期格式过滤
number:数字格式过滤
currency:货币格式过滤
filter:查找
limitTo：字符串对象截取
orderBy:对象排序

<!DOCTYPE html> <html lang="zh_CN"> <head>  <meta charset="UTF-8">  <title>Angular基础</title> </head> <body> <div ng-app="myApp">    <!-- 向表达式添加过滤器：可以通过一个管道字符(|)和一个过滤器添加到表达式中-->   <p>将字符串转换为大小写：</p>   <div ng-controller="uppercaseController">    <p>姓名为 {{ person.lastName | uppercase }}</p>   </div>   <div ng-controller="lowercaseController">    <p>姓名为 {{ person.lastName | lowercase }}</p>   </div>    <p>货币过滤：</p>   <div ng-controller="costController">    数量：<input type="number" ng-model="quantity">    价格：<input type="number" ng-model="price">    <p>总价 = {{ (quantity * price) | currency }}</p>    {{250 |currency:"RMB ￥"}}   </div>    <!-- 向指令添加过滤器：可以通过一个管道字符(|)和一个过滤器添加到指令中-->   <p>按国家的字母顺序排序对象：</p>   <div ng-controller="namesController">    <p>循环对象：</p>    <ul>     <li ng-repeat="x in names | orderBy:'country'">      {{ x.name + ', ' + x.country }}     </li>    </ul>    <!--json格式过滤-->    {{jsonText | json}}  <br/>    <!--date格式过滤-->    <span>{{1288323623006 | date:'yyyy-MM-dd HH:mm:ss'}}</span><br/>    <!--number格式过滤-->    {{1.2345678 |number:1}}<br/>    <!--字符串截取-->    {{ "i love tank" | limitTo:6 }}<br/>    {{ "i love tank" | limitTo:-6 }}<br/>    <!--对象排序：降序-->    {{ [{"age": 20,"id": 10,"name": "iphone"},    {"age": 12,"id": 11,"name": "sunm xing"},    {"age": 44,"id": 12,"name": "test abc"}    ] | orderBy:'id':true }}<br/>    <!--对象排序：升序-->    {{ [{"age": 20,"id": 10,"name": "iphone"},    {"age": 12,"id": 11,"name": "sunm xing"},    {"age": 44,"id": 12,"name": "test abc"}    ] | orderBy:'id' }}   </div>   <p>按输入的字母显示对象：</p>   <div ng-controller="namesFilterController">    <p>输入过滤：</p>    <p><input type="text" ng-model="name"></p>    <ul>     <li ng-repeat="x in names | filter:name | orderBy:'country':true">      {{ (x.name | uppercase) + ', ' + x.country }}     </li>    </ul>    <p>name筛选：</p>    <ul>     <li ng-repeat="x in names | filter:{'name':name} | orderBy:'country':true">      {{ (x.name | uppercase) + ', ' + x.country }}     </li>    </ul>     {{ [{"age": 20,"id": 10,"name": "iphone"},    {"age": 12,"id": 11,"name": "sunm"},    {"age": 44,"id": 12,"name": "test abc"}    ] | filter:{'name':'sunm'} }}   </div>  </div> <script src="angular.min.js"></script> <script type="application/javascript">  var myApp=angular.module('myApp',[]);  myApp.controller('uppercaseController',function($scope){   $scope.person = {    firstName: "John",    lastName: "Doe"   };  });  myApp.controller('lowercaseController',function($scope){   $scope.person = {    firstName: "John",    lastName: "Doe"   };  });  myApp.controller('costController',function($scope){   $scope.quantity = 1;   $scope.price = 9.99;  });  myApp.controller('namesController',function($scope){   $scope.names = [    {name:'Jani',country:'Norway'},    {name:'Hege',country:'Sweden'},    {name:'Kai',country:'Denmark'}   ];   $scope.jsonText={foo:"bar",baz:23};  });  myApp.controller('namesFilterController',function($scope){   $scope.names = [    {name:'Jani',country:'Norway'},    {name:'Hege',country:'Sweden'},    {name:'Kai',country:'Denmark'}   ];  });  </script> </body> </html>

二、AngularJs的控制器使用filter

<!DOCTYPE html> <html lang="zh_CN"> <head>  <meta charset="UTF-8">  <title>Angular基础</title> </head> <body> <div ng-app="myApp">  <div ng-controller="firstCtrl">   {{uFirstName}}<br/>   {{cPrice}}<br/>  </div>  </div> <script src="angular.min.js"></script> <script type="application/javascript">  var myApp=angular.module('myApp',[]);  myApp.controller('firstCtrl',function($scope,$filter){   $scope.firstName="zhangsan";   $scope.uFirstName=$filter('uppercase')($scope.firstName);   $scope.price="121212";   $scope.cPrice=$filter('currency')($scope.price,'RMB ￥');  })  </script> </body> </html>

三、AngularJs自定义filter过滤器

<!DOCTYPE html> <html lang="zh_CN"> <head>  <meta charset="UTF-8">  <title>Angular基础</title> </head> <body> <div ng-app="myApp">  <div ng-controller="firstCtrl">   {{welcome | replaceHello}}<br/>   {{welcome | replaceHello:3:5}}<br/>   {{welcome | rJs}}<br/>  </div>  </div> <script src="angular.min.js"></script> <script src="filter.js"></script> <script type="application/javascript">  var myApp=angular.module('myApp',['myApp.filter']);  myApp.controller('firstCtrl',function($scope){   $scope.welcome="Hello AngularJs";  });  //自定义过滤器  myApp.filter('replaceHello',function(){   return function(input,n1,n2){    console.log(input);    console.log(n1);    console.log(n2);    return input.replace(/Hello/,'您好');   }  })  </script> </body> </html>

var appFilter=angular.module('myApp.filter',[]); //自定义过滤器 appFilter.filter('rJs',function(){  return function(input,n1,n2){   console.log(input);   console.log(n1);   console.log(n2);   return input.replace(/Js/,' javaScript');  } });