1.切换工作目录
git checkout step-4 #切换分支,切换到第4步
npm start #启动项目
2.代码
app/index.html
Search: <input ng-model="query">
Sort by:
<select ng-model="orderProp">
<option value="name">Alphabetical</option>
<option value="age">Newest</option>
</select> <ul class="phones">
<li ng-repeat="phone in phones | filter:query | orderBy:orderProp">
{{phone.name}}
<p>{{phone.snippet}}</p>
</li>
</ul>
app/controllers.js
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';
});
3.效果
按字母排序:
按时间排序:
很明显,相较于step-3,step-4新增加了排序功能
4.原理说明
首先,添加了<select> 标签:
<select ng-model="orderProp">
<option value="name">Alphabetical</option>
<option value="age">Newest</option>
</select>
其次,在filter中添加了orderBy:
<li ng-repeat="phone in phones | filter:query | orderBy:orderProp">
{{phone.name}}
<p>{{phone.snippet}}</p>
</li>
所以,根据angularjs的思想,一是model改变(可能是用户手动选择下拉框导致的),那么根据数据绑定原则(data-binding),view也将适时进行改变.
orderBy api:https://docs.angularjs.org/api/ng/filter/orderBy
orderBy Usage(用法)
In HTML Template Binding(在HTML中的用法)
{{ orderBy_expression | orderBy : expression : reverse}}In JavaScript(在JS中的用法)
$filter('orderBy')(array, expression, reverse)上面的例子是在HTML中用的,默认string类型的数据是按照字母表中数据排序的,而number数字类型的数据是按照数字大小进行排序的.
如果想要倒序,那么可以在上面的option value='-name',加上一个'-'即可.
5.测试
amosli@amosli-pc:~/develop/angular-phonecat$ npm run protractor > angular-phonecat@0.0.0 preprotractor /home/amosli/develop/angular-phonecat
> npm run update-webdriver > angular-phonecat@0.0.0 preupdate-webdriver /home/amosli/develop/angular-phonecat
> npm install > angular-phonecat@0.0.0 postinstall /home/amosli/develop/angular-phonecat
> bower install > angular-phonecat@0.0.0 update-webdriver /home/amosli/develop/angular-phonecat
> webdriver-manager update selenium standalone is up to date.
chromedriver is up to date. > angular-phonecat@0.0.0 protractor /home/amosli/develop/angular-phonecat
> protractor test/protractor-conf.js ------------------------------------
PID: 5265 (capability: chrome #1)
------------------------------------ Using ChromeDriver directly...
.. Finished in 5.033 seconds
2 tests, 5 assertions, 0 failures
这里执行的是端到端的测试,测试代码如下:
angular-phonecat/test/e2e/scenarios.js
分类: js框架
摘要: 一、前言requireJS(一)本篇主要整理requirejs的一些用法，相对比较零散。实例目录二、优化requirejs建议我们给每一个模块书写一个js文件。但是这样会增加网站的http请求，这时可利用工具打包，详情求戳链接查看。三、关于define自定义模块之前说到自定义模块define（）可接...阅读全文
posted @ 2014-05-07 10:59 cunjieliu 阅读(377) 评论(0) 编辑