var run = 0;
var mails = {}
total = 3000; //滚动次数，可以自己根据情况定义

function getEmails (cont) {
	var friendbutton=cont.getElementsByClassName("_ohe");
	for(var i=0; i<friendbutton.length; i++) {
		var link = friendbutton[i].getAttribute("href");

		if(link && link.substr(0,25)=="https://www.facebook.com/") {
			var parser = document.createElement('a');
			parser.href = link;
			if (parser.pathname) {
				path = parser.pathname.substr(1);
				if (path == "profile.php") {
					search = parser.search.substr(1);
					var args = search.split('&');
					email = args[0].split('=')[1] + "@facebook.com\n";
				} else {
					email = parser.pathname.substr(1) + "@facebook.com\n";
				}
				if (mails[email] > 0) {
					continue;
				}
				mails[email] = 1;
				console.log(email);
			}
		}
	}
}

function moreScroll() {
	var text="";
	containerID = "BrowseResultsContainer"
	if (run > 0) {
		containerID = "fbBrowseScrollingPagerContainer" + (run-1);
	}
	var cont = document.getElementById(containerID);
	if (cont) {
		run++;
		var id = run - 2;
		if (id >= 0) {
			setTimeout(function() {
				containerID = "fbBrowseScrollingPagerContainer" + (id);
				var delcont = document.getElementById(containerID);
				if (delcont) {
				getEmails(delcont);
				delcont.parentNode.removeChild(delcont);
				}
				window.scrollTo(0, document.body.scrollHeight - 10);
			}, 1000);
		}
	} else {
		console.log("# " + containerID);
	}
	if (run < total) {
		window.scrollTo(0, document.body.scrollHeight + 10);
	}
	setTimeout(moreScroll, 2000);
}//1000为间隔时间，也可以根据情况定义

moreScroll();