<html lang="en">
<head>
<script src="https://libs.baidu.com/angular.js/1.2.15/angular.min.js"></script>
</head>
<body>
<div ng-app="" ng-controller="formController">
<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>
</div>
<script>
function formController ($scope) {
$scope.master = {firstName:"John", lastName:"Doe"};
$scope.reset = function() {
$scope.user = angular.copy($scope.master);
};
$scope.reset();
}
</script>
</body>
</html>