angularjs filter 详解

张映 发表于 2014-02-25

分类目录: nodejs/vue/js/jquery

标签:, , , ,

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

{{ 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



转载请注明
作者:海底苍鹰
地址:http://blog.51yip.com/jsjquery/1592.html

1 条评论

  1. windinging 留言

    不错,挺详细的

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