全部いいね

autoiine.user.js

// ==UserScript==
// @name        autoiine
// @namespace   gyuque
// @description 全部いいね
// @include     http://www.facebook.com/*
// @include     https://www.facebook.com/*
// @version     1
// @grant       none
// ==/UserScript==

(function() {
	'use strict';
	
	function eachElement(tagName, func) {
		var ls = document.getElementsByTagName(tagName);
		var len = ls.length;
		for (var i = 0;i < len;++i) {
			func(ls[i]);
		}
	}
	
	function clickLike(el) {
		if (el.firstChild && el.firstChild.nodeValue) {
			if (el.firstChild.nodeValue.match(/いいね！$/)) {
				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);
			}
		}
	}
	
	function setup() {
		var btn = document.createElement("button");
		btn.innerHTML = "全部いいね";
		document.body.appendChild(btn);

		btn.addEventListener("click", eachElement.bind(null, 'a', clickLike), false);

		var s = btn.style;
		s.position = "absolute";
		s.top = "40px";
		s.left = "4px";
		s.zIndex = "100";
	}
	
	setup();
})();