could you guys find some problems in my codding?? ㅠㅠ

Question

hey guys i need your help. i don't know why i can't operate this codding what i made. could you give me a method?

function animal(kind,age) {
this.kind = kind;
this.age = age;
this.changeAge = fuction(age){
this.age = age;
}
}

var a = new animal("cat",4);
a.age(6);

document.alert(a.age)

Answer 1

i see some errors,
a.age(6) is not a function it should rather be:
a.changeAge(6)
also document.alert is wrong:
its either document.write() or
window.alert()

Answer 2

Can you put tag #Korean and post a korean version of it? I could help you there:)