Angular provides an API that can copy objects - copy(source,destination), which will perform a deep copy of the source object.
You need to pay attention to the following points when using it:
If there is only one parameter (no copied object is specified), a copy object will be returned
If destination is specified , the object will be deeply copied to destination
If source is null or undefined, source
will be returned directly. If source is destination, an error will be reported.
Let’s take a look at the usage example:
<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="copyExample">
<div ng-controller="ExampleController">
<form novalidate class="simple-form">
Name: <input type="text" ng-model="user.name" /><br />
E-mail: <input type="email" ng-model="user.email" /><br />
Gender:
<input type="radio" ng-model="user.gender" value="male" />
male
<input type="radio" ng-model="user.gender" value="female" />
female
<br />
<button ng-click="reset()">RESET</button>
<button ng-click="update(user)">SAVE</button>
</form>
<pre class="brush:php;toolbar:false">form = {{user | json}}
master = {{master | json}}