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。
Filter是用来格式化数据用的。
Filter的基本原型( '' 类似于Linux中的管道模式):
{{ expression filter }}
Filter可以被链式使用(即连续使用多个filter):
{{ expression filter1 filter2 ... }}
Filter也可以指定多个参数:
{{ expression filter:argument1:argument2:... }}
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
{{ 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
{{ [{"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':'iphone'} }} //查找name为iphone的行 //上例结果:[{"age":20,"id":10,"name":"iphone"}]
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
二,自定filter功能
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。
1,filters.js添加一个module
angular.module('tanktest', []).filter('tankreplace', function() { return function(input) { return input.replace(/tank/, "=====") }; });
2,app.js中加载这个module
var phonecatApp = angular.module('phonecatApp', [ 'ngRoute', 'phonecatControllers', 'facebookControllers', 'tanktest' ]);
3,html中调用
{{ "TANK is GOOD" | lowercase |tankreplace}} //结果:===== is good
注意:| lowercase |tankreplace管道命令可以有多个
以上所述是小编给大家介绍的angularjs filter过滤器相关知识,希望对大家有所帮助,更多有关angularjs filter相关知识敬请关注PHP中文网。谢谢!
更多详解Angularjs filter过滤器相关文章请关注PHP中文网!

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