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aboutCopy.html
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aboutCopy.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>关于浅拷贝与深拷贝</title>
</head>
<body>
<script type="text/javascript">
var text = function () {
var obj1 = {
a: 1,
b: {
c: 1
}
};
var obj2 = Object.assign( {} , obj1 );
console.log(JSON.stringify(obj2));//copy object1的基本属性
obj1.a = 2;
console.log(JSON.stringify(obj1));//a=2
console.log(JSON.stringify(obj2));//a=1
obj2.a = 3;
console.log(JSON.stringify(obj1));//a=2
console.log(JSON.stringify(obj2));//a=3
obj1.b.c = 4;
console.log(JSON.stringify(obj1));//c=4
console.log(JSON.stringify(obj2));//c=4
obj2.b.c = 5;
console.log(JSON.stringify(obj1));//c=5
console.log(JSON.stringify(obj2));//c=5
//Deep Clone
var obj3 = {
a: "云流烟",
b: {
c: "《周易》"
}
};
var obj4 = JSON.parse(JSON.stringify(obj3));
obj3.a = "蝉嘶雪";
obj3.b.c = "《诗经》";
console.log(JSON.stringify(obj3));//{"a":"蝉嘶雪","b":{"c":"《诗经》"}}
console.log(JSON.stringify(obj4));//{"a":"云流烟","b":{"c":"《周易》"}}
obj4.a = "紫泠雨";
obj4.b.c = "《道德经》";
console.log(JSON.stringify(obj3));//{"a":"蝉嘶雪","b":{"c":"《诗经》"}}
console.log(JSON.stringify(obj4));//{"a":"紫泠雨","b":{"c":"《道德经》"}}
}
text();
</script>
</body>
</html>