javascript - Angular.js 中 copy 赋值与 = 赋值 区别
为什么用 $scope.user = $scope.master; $scope.master 会跟着 $scope.user 改变？angular.copy 和 = 号赋值有什么区别呢？新手还没有搞懂，请教各位了。
<!DOCTYPE html>
<html>
<script src= "http://apps.bdimg.com/libs/angular.js/1.3.9/angular.min.js"></script>
<body>
<p ng-app="myApp" ng-controller="formCtrl">
<form novalidate>
First Name:<br>
<input type="text" ng-model="user.firstName"><br>
Last Name:<br>
<input type="text" ng-model="user.lastName">
<br><br>
<button ng-click="reset()">RESET</button>
</form>
<p>form = {{user }}</p>
<p>master = {{master}}</p>
</p>
<script>
var app = angular.module('myApp', []);
app.controller('formCtrl', function($scope) {
$scope.master = {firstName:"John", lastName:"Doe"};
$scope.reset = function() {
$scope.user = angular.copy($scope.master);
// 为什么用 $scope.user = $scope.master; master跟着user改变
};
$scope.reset();
});
</script>
</body>
</html>
