深浅拷贝

深浅拷贝:针对于数据类型而言
引用数据类型：

function deepClone(obj){//深拷贝
	if (typeof obj !== "object" && typeof obj !== "function") {
            return obj; //原始类型直接返回
     }
	// let objClone=obj instanceof Array?[]:{};
	let objClone = Array.isArray(obj) ? [] : {};
	
	for(key in obj){
		if(obj.hasOwnProperty(key)){
			objClone[key]=typeof obj[key]==='object'?deepClone(obj[key]):obj[key];
		}
	}
	return objClone;
}
function shallowClone(obj){//浅拷贝
	if (typeof obj !== "object" && typeof obj !== "function") {
            return obj; //原始类型直接返回
     }
	let objClone=obj instanceof Array?[]:{};
	for(key in obj){
		if(obj.hasOwnProperty(key)){
			objClone[key]=obj[key];
		}
	}
	return objClone;
}