get_ID_Facebook.js

javascript:
function fail(){
alert("Bạn phải ở đúng trang đã");
}
function copy(id){
var b=document.createElement("textarea"),c=document.getSelection();
b.textContent=id,document.body.appendChild(b),c.removeAllRanges(),b.select(),document.execCommand("copy"),c.removeAllRanges(),document.body.removeChild(b)
};
function getMe(){
	try{
		var id = encodeURIComponent(require("TimelineController").getProfileID());
		if(id!="null") return id;
		else return "0";
	}
	catch (e){
		return "0";
	}
}
function getGroup(){
	try{
		var id = encodeURIComponent(require('ScriptPath').getSourcePageInfo().extraData.entity_id);
		if(id!="null") return id;
		else return "0";
	}
	catch (e){
		return "0";
	}
}
function getPage(){
	try{
		var id = encodeURIComponent(require("CurrentPage").getID());
		if(id!="null") return id;
		else return "0";
	}
	catch (e){
		return "0";
	}
}

var id = getMe();
if(id=="0"){
	id = getGroup();
	if(id=="0"){
		id = getPage();
	}
}
console.log(id);
if(id!="0"){
	copy(id);
}
else{
	fail();
}