欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  web前端

怎样使用AngularJS自定义过滤器用法

程序员文章站 2022-06-04 23:42:26
...
这次给大家带来怎样使用AngularJS自定义过滤器用法,使用AngularJS自定义过滤器用法的注意事项有哪些,下面就是实战案例,一起来看一下。

过滤器结构

{{带过滤数据 | 过滤器名:参数1:参数2:参数3.....}}
app.filter('过滤器名', function () {
    return function (待过滤数据, 参数....) {
           ......
      return 已过滤数据;
 }

示例一:是否包含

<!doctype html>
<html ng-app="myApp">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
  <script src="http://apps.bdimg.com/libs/angular.js/1.2.16/angular.min.js"></script>
</head>
<body>
<p ng-controller="myAppCtrl">
  <p>
    <table>
      <tr>
        <th>Name</th>
        <th>Phone</th>
      </tr>
      <!--写法1-->
      <tr ng-repeat="friend in friends |myfilter">
      <!--写法2-->
<!--<tr ng-repeat="friend in newArr=(friends | myfilter)">-->
        <td>{{friend.name}}</td>
        <td>{{friend.phone}}</td>
      </tr>
    </table>
  </p>
</p>
<script type="text/javascript">
  var app = angular.module("myApp", []);
  app.controller("myAppCtrl", ["$scope", function ($scope) {
    $scope.friends = [{name: 'John', phone: '44555-1276'},
      {name: 'Annie', phone: '800-BIG-MARY'},
      {name: 'Mike', phone: '11555-4321'},
      {name: 'Adam', phone: '33555-5678'},
      {name: 'David', phone: '387555-8765'},
      {name: 'Mikay', phone: '555-5678'}];
  }]);
  app.filter("myfilter", function () {
    return function (input) {
      var output = [];
      angular.forEach(input, function (value, key) {
        console.log("value==" + JSON.stringify(value));
        console.log("value.phone类型==" + typeof (value.phone));
        console.log("value.phone.indexOf==" + value.phone.indexOf("555"));
        /*js中没有contains方法,使用indexOf来判断字符串是否包含*/
        /*indexOf字符串出现的位置,没有则返回-1*/
        //方法一:
        if (value.phone.indexOf("555") >= 0) {
          output.push(value);
        }
        //方法二:
//        if (value.phone.indexOf("555") !== -1) {
//          output.push(value);
//        }
      });
      return output;
    }
  });
</script>
</body>
</html>

示例二:倒序

<!doctype html>
<html ng-app="myApp">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
  <script src="http://apps.bdimg.com/libs/angular.js/1.2.16/angular.min.js"></script>
</head>
<body>
<p ng-controller="myAppCtrl">
  姓名:{{ name }}<br>
  倒序:{{ name | reverse }}<br>
  倒序并大写:{{ name | reverse:true }}
</p>
<script type="text/javascript">
  var myAppModule = angular.module("myApp", []);
  myAppModule.controller("myAppCtrl", ["$scope", function ($scope) {
    $scope.name = "xuqiang";
  }]);
  myAppModule.filter("reverse", function () {
    return function (input, uppercase) {
      <!--input就是其中name代表的值。-->
      <!--uppercase这个bool值,判断是否要进行大小写转换。-->
      var out = "";
      for (var i = 0; i < input.length; i++) {
        out = input.charAt(i) + out;
      }
      if (uppercase) {
        out = out.toUpperCase();
      }
      return out;
      <!--返回过滤后的字符串-->
    }
  });
</script>
</body>
</html>

示例三:替换

<!doctype html>
<html ng-app="myApp">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
  <script src="http://apps.bdimg.com/libs/angular.js/1.2.16/angular.min.js"></script>
</head>
<body ng-controller="myAppCtrl">
<p>
  <p>
    {{welcome | replaceHello}}<br/>
    {{welcome | replaceHello:3:5}}<br/>
  </p>
</p>
<script type="text/javascript">
  var app = angular.module("myApp", []);
  app.controller("myAppCtrl", ["$scope", function ($scope) {
    $scope.welcome = "Hello AngularJs";
  }]);
  //自定义过滤器
  app.filter('replaceHello', function () {
    return function (input, n1, n2) {
      console.log("input==" + input);
      console.log("n1==" + n1);
      console.log("n2==" + n2);
      return input.replace(/Hello/, '您好');
    }
  });
</script>
</body>
</html>

示例四:筛选

<!doctype html>
<html ng-app="a3_3">
<head>
  <title>自定义过滤器</title>
  <script src="../Script/angular.min.js"
      type="text/javascript"></script>
  <style type="text/css">
    body {
      font-size: 12px;
    }
    ul {
      list-style-type: none;
      width: 408px;
      margin: 0px;
      padding: 0px;
    }
    ul li {
      float: left;
      padding: 5px 0px;
    }
    ul .odd {
      color: #0026ff;
    }
    ul .even {
      color: #ff0000;
    }
    ul .bold {
      font-weight: bold;
    }
    ul li span {
      width: 52px;
      float: left;
      padding: 0px 10px;
    }
    ul .focus {
      background-color: #cccccc;
    }
  </style>
</head>
<body>
<p ng-controller="c3_3">
  <ul>
    <li ng-class="{{bold}}">
      <span>序号</span>
      <span>姓名</span>
      <span>性别</span>
      <span>年龄</span>
      <span>分数</span>
    </li>
    <li ng-repeat=" stu in data | young:0"
      ng-class-odd="'odd'"
      ng-class-even="'even'">
      <span>{{$index+1}}</span>
      <span>{{stu.name}}</span>
      <span>{{stu.sex}}</span>
      <span>{{stu.age}}</span>
      <span>{{stu.score}}</span>
    </li>
  </ul>
</p>
<script type="text/javascript">
  var a3_3 = angular.module('a3_3', []);
  a3_3.controller('c3_3', ['$scope', function ($scope) {
    $scope.bold = "bold";
    $scope.data = [
      {name: "张明明", sex: "女", age: 24, score: 95},
      {name: "李清思", sex: "女", age: 27, score: 87},
      {name: "刘小华", sex: "男", age: 28, score: 86},
      {name: "陈忠忠", sex: "男", age: 23, score: 97}
    ];
  }]);
  a3_3.filter('young', function () {
    return function (e, type) {
      var _out = [];
      var _sex = type ? "男" : "女";
      for (var i = 0; i < e.length; i++) {
        if (e[i].age > 22 && e[i].age < 28 &&
          e[i].sex == _sex)
          _out.push(e[i]);
      }
      return _out;
    }
  });
</script>
</body>
</html>

示例五:排序

<!doctype html>
<html ng-app="a3_4">
<head>
  <title>表头排序</title>
  <script src="../Script/angular.min.js"
      type="text/javascript"></script>
  <style type="text/css">
    body {
      font-size: 12px;
    }
    ul {
      list-style-type: none;
      width: 408px;
      margin: 0px;
      padding: 0px;
    }
    ul li {
      float: left;
      padding: 5px 0px;
    }
    ul .bold {
      font-weight: bold;
      cursor: pointer;
    }
    ul li span {
      width: 52px;
      float: left;
      padding: 0px 10px;
    }
    ul .focus {
      background-color: #cccccc;
    }
  </style>
</head>
<body>
<p ng-controller="c3_4">
  <ul>
    <li ng-class="{{bold}}">
      <span>序号</span>
      <span ng-click="title='name';desc=!desc">
          姓名
        </span>
      <span ng-click="title='sex';desc=!desc">
          性别
        </span>
      <span ng-click="title='age';desc=!desc">
          年龄
        </span>
      <span ng-click="title='score';desc=!desc">
          分数
        </span>
    </li>
    <li ng-repeat=" stu in data | orderBy : title : desc">
    <!--title:属性值,desc:升序or降序-->
      <span>{{$index+1}}</span>
      <span>{{stu.name}}</span>
      <span>{{stu.sex}}</span>
      <span>{{stu.age}}</span>
      <span>{{stu.score}}</span>
    </li>
  </ul>
</p>
<script type="text/javascript">
  var a3_4 = angular.module('a3_4', []);
  a3_4.controller('c3_4', ['$scope', function ($scope) {
    $scope.bold = "bold";
    $scope.title = 'name';
    $scope.desc = 0;
    $scope.data = [
      {name: "张明明", sex: "女", age: 24, score: 95},
      {name: "李清思", sex: "女", age: 27, score: 87},
      {name: "刘小华", sex: "男", age: 28, score: 86},
      {name: "陈忠忠", sex: "男", age: 23, score: 97}
    ];
  }])
</script>
</body>
</html>

示例六:输入过滤

<!doctype html>
<html ng-app="a3_5">
<head>
  <title>字符查找</title>
  <script src="../Script/angular.min.js"
      type="text/javascript"></script>
  <style type="text/css">
    body {
      font-size: 12px;
    }
    ul {
      list-style-type: none;
      width: 408px;
      margin: 0px;
      padding: 0px;
    }
    ul li {
      float: left;
      padding: 5px 0px;
    }
    ul .bold {
      font-weight: bold;
      cursor: pointer;
    }
    ul li span {
      width: 52px;
      float: left;
      padding: 0px 10px;
    }
    ul .focus {
      background-color: #cccccc;
    }
  </style>
</head>
<body>
<p ng-controller="c3_5">
  <p>
    <input id="txtkey" type="text"
        ng-model="key" placeholder="请输入姓名关键字"/>
  </p>
  <ul>
    <li ng-class="{{bold}}">
      <span>序号</span>
      <span>姓名</span>
      <span>性别</span>
      <span>年龄</span>
      <span>分数</span>
    </li>
    <li ng-repeat=" stu in data | filter : {name:key}">
      <span>{{$index+1}}</span>
      <span>{{stu.name}}</span>
      <span>{{stu.sex}}</span>
      <span>{{stu.age}}</span>
      <span>{{stu.score}}</span>
    </li>
  </ul>
</p>
<script type="text/javascript">
  var a3_5 = angular.module('a3_5', []);
  a3_5.controller('c3_5', ['$scope', function ($scope) {
    $scope.bold = "bold";
    $scope.key = '';
    $scope.data = [
      {name: "张明明", sex: "女", age: 24, score: 95},
      {name: "李清思", sex: "女", age: 27, score: 87},
      {name: "刘小华", sex: "男", age: 28, score: 86},
      {name: "陈忠忠", sex: "男", age: 23, score: 97}
    ];
  }])
</script>
</body>
</html>

相信看了本文案例你已经掌握了方法,更多精彩请关注其它相关文章!

推荐阅读:

怎样使用Vue中字符串模板

如何处理Mac安装thrift因bison报错

以上就是怎样使用AngularJS自定义过滤器用法的详细内容,更多请关注其它相关文章!