あいさつ自動で返すやつ

autopoke.user.js

// ==UserScript==
// @name        autopoke
// @namespace   gyuque
// @description あいさつ
// @include     https://www.facebook.com/pokes*
// @version     1
// @grant       none
// ==/UserScript==

(function() {
	'use strict';
	
	var AutoIDs = {};
		
	function setup() {
		eachPokeBoxes(putButton);
	}

	function eachPokeBoxes(func) {
		var pokeBoxes = document.getElementsByClassName("pokeHeader");
		var len = pokeBoxes.length;
		for (var i = 0;i < len;++i) {
			var box = pokeBoxes[i];
			var pid = findUserID(box);
			if (pid >= 0) {
				func(box, pid);
			}
		}
	}

	function putButton(parent, pid) {
		var btn = document.createElement("button");
		btn.innerHTML = "autopoke";
		btn.addEventListener("click", function(){
			btn.disabled = "disabled";
			btn.style.boxShadow = "0 0 2px 2px #ff0";
			AutoIDs[pid] = true;
		}, false);
		parent.appendChild(btn);
	}
	
	function findUserID(parent) {
		var ls = parent.childNodes;
		for (var i = 0;i < ls.length;++i) {
			var ch = ls[i];
			if (ch.getAttribute) {
				var attr = ch.getAttribute("data-hovercard");
				if (attr) {
					var pos = attr.indexOf("id=");
					if (pos >= 0) {
						return parseInt(attr.substring(pos + 3), 10);
					}
				}
			}
		}
		
		return -1;
	}
	
	function observe() {
		eachPokeBoxes(sendBack);
		setTimeout(observe, 500);
	}

	function sendBack(parentBox, pid) {
		if (!AutoIDs[pid]) {
			return;
		}

		var ls = parentBox.parentNode.getElementsByTagName("a");
		for (var i = 0;i < ls.length;++i) {
			var a = ls[i];
			var url = a.getAttribute("ajaxify");
			if (url && url.indexOf("pokeback") >= 0) {
				fireClick(a);
				return;
			}
		}
	}
	
	function fireClick(el) {
		var evt = document.createEvent("MouseEvents");
		evt.initMouseEvent("click", true, true, unsafeWindow, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
		el.dispatchEvent(evt);
	}
	
	setup();
	observe();
})();