Why does this show [object Object] ?

Question

function fem(number,who) {
this.number=number;
this.who=who;
this.changeName = function(name) {
this.name = name;
};

}
var a = new fem(2,"raxe and dedz");
a.changeName("Dedz");
document.write(a)
why does it show [object Object]?

Answer 1

nvm i found the solution its (a.name)