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<head>
<meta charset="UTF-8">
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<title>Document</title>
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<body>
</body>
<script>
// 简单数据类型 是传值Number、String、Boolean、Null、Undefined ； 复杂是传址Array、Date、Math、RegExp、Object、Function等；
let myproto = {
name:"张三",
age:20,
test:undefined,
arr:[1,3],
fn:function(){
console.log("fn...")
},
obj:{
height:"178cm"
},
test2:null
}
// 深拷贝
// let sonProto = JSON.parse(JSON.stringify(myproto));
let sonProto = deepCopy(myproto);
sonProto.name = "李四";
console.log(myproto,sonProto);
// 深拷贝函数；
function deepCopy(obj){
let newObj = Array.isArray(obj)?[]:{};
//循环原型上的东西；
for(let i in obj){
if(obj.hasOwnProperty(i)){
if(typeof obj[i] == "object"){
newObj[i] = deepCopy(obj[i]);
}else{
newObj[i] = obj[i];
}
}
}
return newObj;
}
// let obj = {
// name:"张三"
// }
// obj.__proto__.age = 20;
// for(let i in obj){
// console.log(obj[i]);
// }
</script>
</html>
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