系统的学习了一下AngularJS,发现angularjs的有些思想根php的模块smarty很像,例如数据绑定,filter。如果对 smarty比较熟悉的话,学习angularjs会比较容易一点。这篇简单说一下angularjs的filter功能,angularjs的 filter功能可分为二种,一种是内置的过滤器,一种是自定义的。
一,内置的过滤器
1,uppercase,lowercase大小转换
- {{ "lower cap string" | uppercase }} //结果:LOWER CAP STRING
- {{ "TANK is GOOD" | lowercase }} //结果:tank is good
|这里的竖线是一种管道功能,如果对linux比较熟悉的话,这块的|根linux的管道功能,基本是一样的2,json格式化
- {{ {foo: "bar", baz: 23} | json }} //结果:{ "foo": "bar", "baz": 23 }
注意:bza没格式前是没有双引号的,格式化后就转换成了json数据了。
3,date格式化
- mysql时间戳 ng-bind="message.time * 1000 | date:'yyyy-mm-dd'"
- {{ 1304375948024 | date:'medium'}} //May 03, 2011 06:39:08 PM
- {{ 1304375948024 | date }} //结果:May 3, 2011
- {{ 1304375948024 | date:"MM/dd/yyyy @ h:mma" }} //结果:05/03/2011 @ 6:39AM
- {{ 1304375948024 | date:"yyyy-MM-dd hh:mm:ss" }} //结果:2011-05-03 06:39:08
4,number格式化
- {{ 1.234567 | number:1 }} //结果:1.2
- {{ 1234567 | number }} //结果:1,234,567
5,currency货币格式化
- {{ 250 | currency }} //结果:$250.00
- {{ 250 | currency:"RMB ¥ " }} //结果:RMB ¥ 250.00
6,filter查找 只能查value,不能查key
- {{ [{"age": 20,"id": 10,"name": "iphone"},
- {"age": 12,"id": 11,"name": "sunm xing"},
- {"age": 44,"id": 12,"name": "test abc"}
- ] | filter:'s'}} //查找含有有s的行
- //上例结果:[{"age":12,"id":11,"name":"sunm xing"},{"age":44,"id":12,"name":"test abc"}]
- {{ [{"age": 20,"id": 10,"name": "iphone"},
- {"age": 12,"id": 11,"name": "sunm xing"},
- {"age": 44,"id": 12,"name": "test abc"}
- ] | filter:{'name':'ip'} }} //查找name like ip的行
- //上例结果:[{"age":20,"id":10,"name":"iphone"}]
- $filter('number')(30000, 2);
- var jsonString = $filter('json')({"age":12,"id":11,"name":"sunm xing"},{"age":44,"id":12,"name":"test abc"}])
7,limitTo字符串,对像的截取
- {{ "i love tank" | limitTo:6 }} //结果:i love
- {{ "i love tank" | limitTo:-4 }} //结果:tank
- {{ [{"age": 20,"id": 10,"name": "iphone"},
- {"age": 12,"id": 11,"name": "sunm xing"},
- {"age": 44,"id": 12,"name": "test abc"}
- ] | limitTo:1 }} //结果:[{"age":20,"id":10,"name":"iphone"}]
8,orderBy对像排序
- {{ [{"age": 20,"id": 10,"name": "iphone"},
- {"age": 12,"id": 11,"name": "sunm xing"},
- {"age": 44,"id": 12,"name": "test abc"}
- ] | orderBy:'id':true }} //根id降序排
- {{ [{"age": 20,"id": 10,"name": "iphone"},
- {"age": 12,"id": 11,"name": "sunm xing"},
- {"age": 44,"id": 12,"name": "test abc"}
- ] | orderBy:'id' }} //根据id升序排
- {{ [{"age": 20,"id": 10,"name": "iphone"},
- {"age": 12,"id": 11,"name": "sunm xing"},
- {"age": 44,"id": 12,"name": "test abc"}
- ] | orderBy:['-age','name'] }}
二,自定filter功能
filter的自定义方式也很简单,使用module的filter方法,返回一个函数,该函数接收输入值,并返回处理后的结果。
- app.filter('过滤器名称',function(){
- return function(需要过滤的对象,过滤器参数1,过滤器参数2,...){
- //...做一些事情
- return 处理后的对象;
- }
- });
我找了一个基本angularjs的mvc框架,phonecat,自定义filter也是在这基础写的,这个框架挺好用的。
filters.js添加一个module
- angular.module('tanktest', []).filter('tankreplace', function() {
- return function(input) {
- return input.replace(/tank/, "=====")
- };
- });
- {{ "TANK is GOOD" | lowercase |tankreplace}} //结果:===== is good
注意:| lowercase |tankreplace管道命令可以有多个
- yourApp.filter('orderObjectBy', function() {
- return function(items, field, reverse) {
- var filtered = [];
- angular.forEach(items, function(item) {
- filtered.push(item);
- });
- filtered.sort(function (a, b) {
- return (a[field] > b[field] ? 1 : -1);
- });
- if(reverse) filtered.reverse();
- return filtered;
- };
- });
该过滤器将对象转换成标准的数组并把它通过您指定字段排序。您可以使用orderObjectBy过滤器酷似ORDERBY,包括字段名后一个布尔值,以指定的顺序是否应该得到扭转。换句话说,假的是升序,真正的下降。html调用
- <li ng-repeat="item in items | orderObjectBy:'color':true">{{ item.color }}</li>
排序搜索
- <input type="text" ng-model="search" class="form-control" placeholder="Search">
- <thead>
- <tr>
- <!-- ng-class="{dropup:true}" -->
- <th ng-click="changeOrder('id')" ng-class="{dropup: order === ''}">
- 产品编号
- <span ng-class="{orderColor: orderType === 'id'}" class="caret"></span>
- </th>
- <th ng-click="changeOrder('name')" ng-class="{dropup: order === ''}">
- 产品名称
- <span ng-class="{orderColor: orderType === 'name'}" class="caret"></span>
- </th>
- <th ng-click="changeOrder('price')" ng-class="{dropup: order === ''}">
- 产品价格
- <span ng-class="{orderColor: orderType === 'price'}" class="caret"></span>
- </th>
- </tr>
- </thead>
- <tbody>
- <tr ng-repeat="item in productData | filter: search | orderBy:order + orderType">
- <td>{{item.id}}</td>
- <td>{{item.name}}</td>
- <td>{{item.price | currency: '¥'}}</td>
- </tr>
- </tbody>
angularjs
- //默认排序字段
- $scope.orderType = 'id';
- $scope.order = '-';
- $scope.changeOrder = function(type) {
- console.log(type);
- $scope.orderType = type;
- if ($scope.order === '') {
- $scope.order = '-';
- }else{
- $scope.order = '';
- }
- }