1、$filter
2、自定义过滤器
<!-- index.html -->
<!DOCTYPE html>
<html ng-app="myApp">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script src="angular.js"></script>
</head>
<body>
<div ng-controller="firstController">
<p>{{ name }}</p>
<p>{{ num }}</p>
</div>
</body>
<script type="text/javascript">
var app = angular.module("myApp", []);
app.controller(‘firstController‘, [‘$scope‘,‘$filter‘, function($scope, $filter){
$scope.num = 344342342357.32342565;
$scope.name = $filter("firstUpper")("hello");
}]);
//自定义过滤器的写法是返回一个函数
app.filter("firstUpper",function(){
//这里的参数就是使用过滤器的时候传入的参数
return function(str,num,nu2){
// console.log(str);
// console.log(num);
// console.log(nu2);
return str.charAt(0).toUpperCase()+str.substring(1);
}
})
</script>
</html>
原文：http://www.cnblogs.com/gao-xiong/p/5963038.html