var obj = {
            id:1,
            name:"fire",
            use:{
                age:18,
                key:20,
            },
            color:["pink","red","blue"],
        };

        var o = {};

        // //浅拷贝方法：只拷贝最外面一层，深层次只拷贝地址
        // Object.assign(o,obj);
        // console.log(o);

        //深拷贝：拷贝多层，会全部开辟新空间，不会互相干扰
        function DeepCopy(newobj,oldobj){
            for(var k in oldobj)
            {
                var item = oldobj[k];
                if(item instanceof Array)//必须先写数组，后写对象，因为数组也属于对象
                {
                    newobj[k] = [];
                    DeepCopy(newobj[k],item);
                }
                else if(item instanceof Object)
                {
                    newobj[k] = {};
                    DeepCopy(newobj[k],item);
                }
                else{
                    newobj[k] = item;
                }
            }
        }
        DeepCopy(o,obj);
        
        o.use = {};
        console.log(o);
        console.log(obj);