1、uppercase，lowercase 大小写转换
{{ "lower cap string" | uppercase }} // 结果：LOWER CAP STRING
{{ "TANK is GOOD" | lowercase }} // 结果：tank is good
2、date 格式化
{{1490161945000 | date:"yyyy-MM-dd HH:mm:ss"}} // 2017-03-22 13:52:25
3、number 格式化（保留小数）
{{149016.1945000 | number:2}}
4、currency货币格式化
{{ 250 | currency }} // 结果：$250.00
{{ 250 | currency:"RMB ￥ " }} // 结果：RMB ￥ 250.00
5、filter查找
输入过滤器可以通过一个管道字符（|）和一个过滤器添加到指令中，该过滤器后跟一个冒号和一个模型名称。
filter 过滤器从数组中选择一个子集
// 查找name为iphone的行
{{ [{"age": 20,"id": 10,"name": "iphone"},
{"age": 12,"id": 11,"name": "sunm xing"},
{"age": 44,"id": 12,"name": "test abc"}
] | filter:{'name':'iphone'} }}
6、limitTo 截取
{{"1234567890" | limitTo :6}} // 从前面开始截取6位
{{"1234567890" | limitTo:-4}} // 从后面开始截取4位
7、orderBy 排序
// 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':true }}
// 根据id升序排
{{ [{"age": 20,"id": 10,"name": "iphone"},
{"age": 12,"id": 11,"name": "sunm xing"},
{"age": 44,"id": 12,"name": "test abc"}
] | orderBy:'id' }}
以下代码是不使用 $interval 服务的情况下，运用 $apply，实现每一秒显示信息的功能。
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.theTime = new Date().toLocaleTimeString();
$scope.setTime = function() {
// $apply 方法可以修改数据
$scope.$apply(function() {
$scope.theTime = new Date().toLocaleTimeString();
});
};
setInterval($scope.setTime, 1000);
});
$watch：持续监听数据上的变化，更新界面，如：
请输入姓名：
varapp=angular.module('myApp',[]);app.controller('myCtrl',function($scope){$scope.lastName="";$scope.firstName="";//监听lastName的变化，更新fullName$scope.$watch('lastName',function(){$scope.fullName=$scope.lastName+" "+$scope.firstName;});//监听firstName的变化，更新fullName$scope.$watch('firstName',function(){$scope.fullName=$scope.lastName+" "+$scope.firstName;});});
姓：
名：
{{ lastName + " " + firstName }}
{{ fullName }}
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.lastName = "";
$scope.firstName = "";
//监听lastName的变化，更新fullName
$scope.$watch('lastName', function() {
$scope.fullName = $scope.lastName + " " + $scope.firstName;
});
//监听firstName的变化，更新fullName
$scope.$watch('firstName', function() {
$scope.fullName = $scope.lastName + " " + $scope.firstName;
});
});
如果通过$watch去监听某变量的变化，最后去更新一个fullName就太麻烦了，还倒不如使用函数的方式，如getFullName()：
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.lastName = "";
$scope.firstName = "";
$scope.getFullName =function(){ return $scope.lastName + " " + $scope.firstName;}
//监听lastName的变化，更新fullName
$scope.$watch('lastName', function() {
$scope.fullName = $scope.lastName + " " + $scope.firstName;
});
//监听firstName的变化，更新fullName
$scope.$watch('firstName', function() {
$scope.fullName = $scope.lastName + " " + $scope.firstName;
});
});