• angularJs的学习笔记(一):angularJs的filter是根据value属性值来过滤的


        最近在捣鼓angularJs,刚刚入门,教程里有一篇是关于filter的,效果如下所示,学过的都知道,最简单的一个了。

      

    代码如下:

     1 <!doctype html>
     2 <html lang="en" ng-app="phonecatApp">
     3 <head>
     4   <meta charset="utf-8">
     5   <title>Google Phone Gallery</title>
     6   <link rel="stylesheet" href="css/app.css">
     7   <link rel="stylesheet" href="css/bootstrap.css">
     8   <script src="lib/angular/angular.js"></script>
     9   <script src="js/controllers.js"></script>
    10 </head>
    11 <body ng-controller="PhoneListCtrl">
    12 
    13   <div class="container-fluid">
    14     <div class="row-fluid">
    15       <div class="span2">
    16         <!--Sidebar content-->
    17 
    18         Search: <input ng-model="query">
    19 
    20       </div>
    21       <div class="span10">
    22         <!--Body content-->
    23 
    24         <ul class="phones">
    25           <li ng-repeat="phone in phones | filter:query">
    26             {{phone.name}}
    27             <p>{{phone.snippet}}</p>
    28           </li>
    29         </ul>
    30 
    31       </div>
    32     </div>
    33   </div>
    34 
    35 </body>
    36 </html>

    js代码如下:

     1 'use strict';
     2 
     3 /* Controllers */
     4 
     5 var phonecatApp = angular.module('phonecatApp', []);
     6 
     7 phonecatApp.controller('PhoneListCtrl', function($scope) {
     8   $scope.phones = [
     9     {'name': 'Nexus S',
    10      'snippet': 'Fast just got faster with Nexus S.',
    11      'age': 1},
    12     {'name': 'Motorola XOOM™ with Wi-Fi',
    13      'snippet': 'The Next, Next Generation tablet.',
    14      'age': 2},
    15     {'name': 'MOTOROLA XOOM™',
    16      'snippet': 'The Next, Next Generation tablet.',
    17      'age': 3}
    18   ];
    19 
    20 });

    到这里还没有什么问题,顺着教程的思路往下走,下一篇是讲排序的,根据下拉列表的值来决定排序规则,效果图如下:

    新代码:

    <!doctype html>
    <html lang="en" ng-app="phonecatApp">
    <head>
      <meta charset="utf-8">
      <title>Google Phone Gallery</title>
      <link rel="stylesheet" href="css/app.css">
      <link rel="stylesheet" href="css/bootstrap.css">
      <script src="lib/angular/angular.js"></script>
      <script src="js/controllers.js"></script>
    </head>
    <body ng-controller="PhoneListCtrl">
    
      <div class="container-fluid">
        <div class="row-fluid">
          <div class="span2">
            <!--Sidebar content-->
    
            Search: <input ng-model="query">
            Sort by:
            <select ng-model="orderProp">
              <option value="name">Alphabetical</option>
              <option value="age">Newest</option>
            </select>
    
          </div>
          <div class="span10">
            <!--Body content-->
    
            <ul class="phones">
              <li ng-repeat="phone in phones | filter:query | orderBy:orderProp">
                {{phone.name}}
                <p>{{phone.snippet}}</p>
              </li>
            </ul>
    
          </div>
        </div>
      </div>
    
    </body>
    </html>

    js的代码:

    'use strict';
    
    /* Controllers */
    
    var phonecatApp = angular.module('phonecatApp', []);
    
    phonecatApp.controller('PhoneListCtrl', function($scope) {
      $scope.phones = [
        {'name': 'Nexus S',
         'snippet': 'Fast just got faster with Nexus S.',
         'age': 1},
        {'name': 'Motorola XOOM™ with Wi-Fi',
         'snippet': 'The Next, Next Generation tablet.',
         'age': 2},
        {'name': 'MOTOROLA XOOM™',
         'snippet': 'The Next, Next Generation tablet.',
         'age': 3}
      ];
    
      $scope.orderProp = 'age';
    });

    (ps:具体什么意思就不解释了,重点不是这个),突发奇想,想着既然输入框能做filter来过滤,那下拉框也可以啊,开始想着把ng-repeat里的filter后面改为orderProp即可,其实就是这样,但是没奏效,因为不匹配,不是没有匹配下拉框显示的文本,而是匹配<option>的value属性。

       总之,总结的就是,filter过滤的根据是model的value属性值。

      (写完博客才发现,其实是很简单的东西,理所当然是value属性啊,但是写到这也不想删了,就当笔记吧,理解也加深了点。)

      我在下拉列表里加了个文本是数字151....的,value是‘F’的option,选中之后就能过滤啦,嘿嘿,这样是为了明显的显示出效果来.可以自己试试。贴图:

    代码:

    1 <select ng-model="orderProp">
    2           <option value="name">Alphabetical</option>
    3           <option value="age">Newest</option>
    4           <option value="F">151652222222</option>
    5 </select>
    1 
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  • 原文地址:https://www.cnblogs.com/rebaomi/p/3525630.html
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