js裝飾器曾經有巨大改版，主要是在2個方面：
第乙個方面是多個裝飾器在裝飾類的原型方法時，執行順序不同：
function
dec(id)
class
example
}
evaluated 2
evaluated 1
executed 2
executed 1
evaluated 1
evaluated 2
executed 2
executed 1
function
dec(target, prop, descriptor)
= descriptor;
delete descriptor.initializer;
delete descriptor.writable;
descriptor.
get=
function()
;}class
example
//當裝飾器作為修飾類的時候，會把構造器傳遞進去
function
addnameeat
(constructor
:typeof person);}
@addnameeat
class
person
}let p: person =
newperson()
;console
.log
(p.name);p.
eat(
);
function
addnameeat
(name:
string);
};}@addnameeat
('yehuozhili'
)class
person
}let p: person =
newperson()
;console
.log
(p.name);p.
eat(
);
inte***ce
personextends
extends
person
function
addnameeat
(name:
string
)hello()
static aaa:
string
="1"
;static bbb:
number
=111;}
;};}
@addnameeat
("yehuozhili"
)class
person
static aaa:
string
="222";}
let p =
newperson()
;console
.log
(p.name)
;//undefiend
p.eat()
;//修改後
p.hello()
;// new function yehuozhili
let k =
person
console
.log
(person.aaa)
;//'1'
console
.log
(k.bbb)
//111
function
addnameeat
(name:
string);
}@addnameeat
('yehuozhili'
)class
person
}let p: person =
newperson()
;console
.log
(p.name);p.
eat(
);
function
uppercase
(target:
any, propertykey:
string);
// 用來替換的setter
const
setter
=function
(newval:
string);
// 替換屬性，先刪除原先的屬性，再重新定義屬性if(
delete target[propertykey]))
;}}
@test
public
static age:
number=10
;
function
noenumerable
( target:
any,
_property:
string
, descriptor: propertydescriptor
)class
person
@noenumerable
getname()
@tonumber
sum(...args:
any)
}
@test
static
getaa()
inte***ce
person
function
addage
(target:
any, methodname:
string
, paramsindex:
number
)class
person
static
aaa(@addage a:
string)}
let p =
newperson()
;p.login
('yehuozhili'
,'123456'
)
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