From function to object constructor - problem [solved]

Question

Hinfriends !

in JS,
i wrote a function to add a button and it works perfectly.
Now, as i need more button, i would like to transform this function to an object constructor but it doesn't work (button isn't displayed).
can you help me and see what is wrong :

this fuction works good:
command();
function command(){
var btn = document.createElement("button");
var btnText = document.createTextNode("Go!");
btn.appendChild(btnText);
document.getElementById("startPage").appendChild(btn);
btn.setAttribute("id","buttonGo");
}

the object constructor = problem :

buttonGo = new command("Go!","buttonGo");
function command(text,idName){
this.text = text;
this.idName = idName;
this.commandCreate = function(){
var btn = document.createElement("button");
var btnText = document.createTextNode(text);
btn.appendChild(btnText);
document.getElementById("startPage").appendChild(btn);
btn.setAttribute("id",idName);
};

Many thanks !

Answer 1

thank you so much Hoàng Nguyễn Văn .
i've just added the DOM element creation :
buttonGo.commandCreate();

and its works !

Answer 2

Did you call the commandCreate method? What I've seen so far is the object initialization with name and text, but no DOM element creation.

Answer 3

Gaël Des Iris You're welcome :D

Answer 4

ؤ عل
ث ئقشئئيكعقئف

Answer 5

ذءقشربتوابلاففيذءقشربتوابلاففي
اا،ي
سء،ءق،ز. .
كص ةحظن،كح
شققآيإ
ج٣،ؤقط .ئ