var ca = {color:"red",height:185};
var ne = {name:"zhangsan",age:15,other:ca};
// 浅拷贝
var pr = {};
// pr.name = ne.name;
// pr.age = ne.age;
// pr.other = ne.other;
for(var i in ne){
pr[i] = ne[i];
}
//注意:var pr =ne;这个不叫拷贝,只是赋值;
//浅拷贝中被拷贝的对象中有引用类型时,改变了其中的引用类型中的属性对他们都有影响,
//eg:ne.other.color = "blue";
var ca = {color:"red",height:185};
var ne = {name:"zhangsan",age:15,other:ca};
// 深拷贝
var pr = {};
for(var i in ne){
if(typeof ne[i] ==="object"){
pr[i]={};//必须先声明是一个对象,要不然会报错;
for(var k in ne[i]){
pr[i][k] = ne[i][k]
}
}else{
pr[i] = ne[i];
}
}
ne.name = "lisi";
ne.other.color = "blue";
//深拷贝,被拷贝的属性是引用类型,并且是数组的情况
var ca = ["a",2,true];
var ne = {name:"zhangsan",age:15,other:ca};
// 深拷贝
var pr = {};
for(var i in ne){
if(typeof ne[i] ==="object"){
pr[i]=[];//必须先声明是一个数组,要不然会报错;
for(var k in ne[i]){
pr[i][k] = ne[i][k]
}
}else{
pr[i] = ne[i];
}
}
ne.name = "lisi";
ne.other[0] = "blue";
age.png//浅拷贝(面对对象的思想)
var ca = {color:"red",height:185};
var ne = {
name:"zhangsan",
age:15,
other:ca,
lightcopy:function(){
var xx = {};
for(var i in this){
xx[i]=this[i];
}
return xx;
}};
// 浅拷贝面对对象
var newne = ne.lightcopy();
ne.name = "lisi";
ne.other.color = "blue";
//深拷贝(面对对象)
var ca = {color:"red",height:185};
var ne = {name:"zhangsan",age:15,other:ca};
function DeepCopy(){
var temp = {};
for( var i in this){
if(typeof this[i]==="object"){
temp[i]=this[i].deepcopy();
}else{
temp[i]=this[i];
}
}
return temp;
}
//让每一个对象都有deepcopy的属性,对应着DeepCopy方法,
//在拷贝时,若是基本类型则直接拷贝,是引用类型就调用其自身的deepcopy方法,将放回值赋值给对应的属性,
ca.deepcopy = DeepCopy;
ne.deepcopy = DeepCopy;
var newNe = ne.deepcopy();
ne.name = "lisi";
ne.other.color = "blue";