var a = { name: 'a'}
var b = a
b.name = 'b'
a.name = 'b'
| Stack | Heap | |
|---|---|---|
| a | ADDR 101 | 101:name:'a' -> 'b' |
| b | ADDR 101 |
var a = 1
var b = a
b = 2
a = 1
| Stack | Heap | |
|---|---|---|
| a | 1 | |
| b | 1 -> 2 |
var a = { name: 'a'}
var b = a
b ={name: 'b'}
a .name= 'a'
| Stack | Heap | |
|---|---|---|
| a | ADDR 101 | 101:name:'a' -> 'b' |
| b | ADDR 101 -> 102 | 102:name:'b' |
var a = { name: 'a'}
var b = a
b =null
a .name= 'a'
| Stack | Heap | |
|---|---|---|
| a | ADDR 101 | 101:name:'a' -> 'b' |
| b | ADDR 101 -> null |
var a = {}
a.self = a
a.self.self.self=?
| Stack | Heap | |
|---|---|---|
| a | ADDR 101 | 101:name:'a' -> 'b' + self:ADDR 101 |
var a = {n:1}
var b = a
a.x = a = {n: 2}
alert(a.x);
// --> undefined
alert(b.x);
// --> [object Object]
| Stack | Heap | |
|---|---|---|
| a | ADDR 101 ->102 | 101:n:1 + ADDR102 |
| b | ADDR 101 | 102:n:2 |
var a = {name: 'a '}
var b = {name: 'b'}
a = b
| Stack | Heap | |
|---|---|---|
| a | ADDR 101 ->102 | 101:name: 'a' ->垃圾回收 |
| b | ADDR 102 | 102:name:'b' |
