<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<script src="js/angular.min.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript">
//angular.copy is deep copy
var o1 = {
name: 'xudongyang',
age: 26,
skill:{}
}
var o2 = angular.copy(o1);
console.log(o2);
console.log(o1 == o2);
//extend is shallow copy of the properties of the source objects from right to left
var src1 = {
name: 'xudongyang',
age: 20
}
var src2 = {
age: 10,
skill: {}
}
var dst = {},
dst2 = angular.extend(dst , src2 , src1)
console.log(dst2.skill == dst.skill);
src2.skill.eat = "kaorou";
console.log(dst2.skill);
console.log(dst.skill);
//angular.merge is deep copy
var m1 = {name:'xudongyang' , age:29},
m2 = {age:10 , skill:{}}
dstm = {};
dstm2 = angular.merge(dstm , m2 , m1);
console.log(dstm2);
console.log(m2.skill == dstm2.skill);
//angular.extend vs angular.merge
var s1 = {skill:{name:'java' , experience: 20, certified: true}},
s2 = {skill:{name:'js' , experience: 10}},
dst = {},
dst2 = angular.extend(dst , s1 , s2);
console.log(dst);
//angular.extend vs angular.merge
var s1 = {skill:{name:'java' , experience: 20, certified: true}},
s2 = {skill:{name:'js' , experience: 10}},
dst = {},
dst2 = angular.merge(dst , s1 , s2);
console.log(dst);
//浅克隆只克隆一层，深克隆一直复制到最底层
</script>
</body>
</html>
