AngularJS filter

 $filter 

1、 currency格式化数字为货币格式。

var orderBy  = $filter('orderBy');

$scope.list =orderBy(list,'age',true);

var price ="11.11";

var currency  = $filter('currency');

console.log(currency);

$scope.price =currency(price,'$');

2、lowercase格式化字符串为小写。

3、uppercase格式化字符串为大写。

var  hello ='Hello World!!!!!';

var uppercase  = $filter('uppercase');

$scope.hello =uppercase(hello);

var lowercase  = $filter('lowercase');

$scope.low =lowercase(hello);

4、orderBy根据某个表达式排列数组 

var list = [

{name:'css',age:6},

{name:'jss',age:26},

{name:'html',age:16},

{name:'json',age:166},

];

5、number   angularjs过滤器number，用来精确浮点数

var number = $filter('number');

var count =number(123.456789,2);//123.46

var count =number(123.12345,10);//123.1234500000

6、limitTo  (限制数组长度或字符串长度)

var limitTo = $filter('limitTo');

console.log(limitTo('123456789',1));   //1

console.log(limitTo('123456789',2));   //12

console.log(limitTo('123456789',1,3));  //4

4、filter从数组项中选择一个子集 还没学习，暂时用不着