AngularJS API之equal比较对象

时间：2021-04-12 20:08:10

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

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