使用情况
- 1 首先，所有满足 a === 3 这种的对象，在angular.equals(a,b)中都会返回真
- 2 所有对象的类型，以及属性值都相同的，也会返回真
- 3 NaN和NaN也会返回真（在javascript中，返回的是假）
- 4 正则也会返回真（在javascirpt，/abc/ /abc/被认为是不相等的）
样例
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="http://apps.bdimg.com/libs/angular.js/1.2.16/angular.min.js"></script>
</head>
<body ng-app="myApp">
<div ng-controller="myCtrl">
{{ a_equals }}
{{ user_equals }}
{{ nan_equals }}
{{ reg_equals }}
</div>
<script type="text/javascript">
angular.module("myApp",[])
.controller("myCtrl",function($scope){
var a = 3;
$scope.a_equals = angular.equals(a,3);//a === 3
var user1 = {"name":"xing","age":30};
var user2 = {"name":"xing","age":30};
$scope.user_equals = angular.equals(user1,user2);
$scope.nan_equals = angular.equals(NaN,NaN);//in javascirpt is false
$scope.reg_equals = angular.equals(/abc/,/abc/);// in javascript is false
});
</script>
</body>
</html>
运行会得到四个true