Home > Web Front-end > JS Tutorial > Detailed explanation of Angularjs filter_AngularJS

Detailed explanation of Angularjs filter_AngularJS

WBOY
Release: 2016-05-16 15:16:12
Original
1097 people have browsed it

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 }}
Copy after login

Filter可以被链式使用(即连续使用多个filter):

{{ expression filter1 filter2 ... }}
Copy after login

Filter也可以指定多个参数:

{{ expression filter:argument1:argument2:... }}
Copy after login

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 
Copy after login

|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 } 
Copy after login

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 
Copy after login

4,number格式化

{{ 1.234567 | number:1 }} //结果:1.2 
{{ 1234567 | number }} //结果:1,234,567 
Copy after login

5,currency货币格式化

{{ 250 | currency }} //结果:$250.00 
{{ 250 | currency:"RMB ¥ " }} //结果:RMB ¥ 250.00 
Copy after login

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"}] 
Copy after login

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"}] 
Copy after login

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 
Copy after login

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/, "=====") 
}; 
}); 
Copy after login

2,app.js中加载这个module

var phonecatApp = angular.module('phonecatApp', [ 
'ngRoute', 
'phonecatControllers', 
'facebookControllers', 
'tanktest' 
]); 
Copy after login

3,html中调用

{{ "TANK is GOOD" | lowercase |tankreplace}} //结果:===== is good 
Copy after login

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相关知识敬请关注脚本之家网站。谢谢!

source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template