lovecoding
/
Web1020


			
				
					
						
						
							12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455
							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        var obj = {
            name: 'zhangsan',
            age: 18,
            sex: '男',
            friend:{
                name: 'lisi',
                age: 19
            }
        }
        var arr = [1,2,3,4,5,[6,7,8,9]];

        // 深拷贝
        function deepClone(obj){
            var res = null;
            // 判断obj是不是对象或者是数组
            if(typeof obj == 'object'){
                if(Array.isArray(obj)){
                    res = [];
                    // 遍历数组
                    for(let item of obj){
                        res.push(deepClone(item));
                    }
                }else{
                    res = {};
                    // 遍历对象
                    for(let key in obj){
                        res[key] = deepClone(obj[key]);
                    }
                }
            }else{
                res = obj;
            }
            return res;
        }

        // var arr2 = deepClone(arr);
        // arr[0] = "hello";
        // arr[5][0] = "world";
        // console.log(arr2);
        var obj2 = deepClone(obj);
        obj.age = 20;
        obj.friend.age = 20;
        console.log(obj2);
    </script>
</body>
</html>