bookmarklet

javascript:(function()%7B(function()%7Bvar%20container%20%3D%20document.getElementsByClassName('asset-acquire__container')%5B0%5D%3Bif%20(!container)%20%7Breturn%3B%7Dvar%20storage%20%3D%20window.localStorage%3Bif%20(!storage)%20%7Breturn%3B%7Dif%20(window.favoritesBookmarklet)%20%7Breturn%3B%7Dwindow.favoritesBookmarklet%20%3D%20true%3Bvar%20faveList%20%3D%20storage.faveList%20%3F%20JSON.parse(storage.faveList)%20%3A%20%5B%5D%3Bfunction%20makeButton(text%2C%20onClick)%20%7Bvar%20btn%20%3D%20document.createElement('a')%3Bbtn.className%20%3D%20'btn'%3Bbtn.href%20%3D%20'%23'%3Bbtn.innerHTML%20%3D%20text%3Bbtn.style%20%3D%20'margin-top%3A%205px%3B'%3Bbtn.addEventListener('click'%2C%20function(e)%7Be.preventDefault()%3Bif%20(typeof%20onClick%20%3D%3D%20'function')%20%7BonClick()%3B%7D%7D)%3Breturn%20btn%3B%7Dfunction%20save()%20%7Bstorage.faveList%20%3D%20JSON.stringify(faveList)%3BupdateState()%3B%7Dfunction%20add()%20%7BfaveList.push(%7Btitle%3A%20document.title%2Curl%3A%20window.location.href%7D)%3Bsave()%3B%7Dfunction%20get()%20%7Breturn%20faveList.findIndex(function(item)%7Breturn%20item.url%20%3D%20window.location.href%3B%7D)%3B%7Dfunction%20del()%20%7Bvar%20exist%20%3D%20get()%3Bif%20(exist%20%3C%200)%20%7Breturn%3B%7DfaveList.splice(exist%2C%201)%3Bsave()%3B%7Dfunction%20closeFade()%20%7Bvar%20fade%20%3D%20document.getElementById('faveFade')%3Bdocument.body.removeChild(fade)%3B%7Dfunction%20showList()%20%7Bvar%20fade%20%3D%20document.createElement('div')%3Bfade.id%20%3D%20'faveFade'%3Bfade.style%20%3D%20'position%3A%20fixed%3B%20left%3A%200%3B%20top%3A%200%3B%20width%3A%20100%25%3B%20height%3A%20100%25%3B%20background%3A%20rgba(0%2C0%2C0%2C0.2)%3B%20z-index%3A%209999999%3B'%3Bfade.addEventListener('click'%2C%20closeFade)%3Bvar%20list%20%3D%20document.createElement('div')%3Blist.style%20%3D%20'position%3A%20relative%3B%20left%3A%2020px%3B%20top%3A%2020px%3B%20display%3A%20block%3B%20width%3A%2080%25%3B%20height%3A%2060%25%3B%20background%3A%20%23fff%3B%20padding%3A%2010px%3B%20overflow%3A%20hidden%3B%20overflow-y%3A%20auto%3B'%3Bvar%20ul%20%3D%20document.createElement('ul')%3Bul.style%20%3D%20'list-style%3A%20inside'%3BfaveList.forEach(function(item)%7Bvar%20link%20%3D%20document.createElement('a')%3Blink.href%20%3D%20item.url%3Blink.target%20%3D%20'_blank'%3Blink.innerHTML%20%3D%20item.title%3Bvar%20li%20%3D%20document.createElement('li')%3Bli.appendChild(link)%3Bul.appendChild(li)%3B%7D)%3Blist.appendChild(ul)%3Bfade.appendChild(list)%3Bdocument.body.appendChild(fade)%3B%7Dvar%20button%3Bfunction%20updateState()%20%7Bif%20(button)%20%7Bcontainer.removeChild(button)%3B%7Dvar%20current%20%3D%20get()%3Bif%20(current%20%3C%200)%20%7Bbutton%20%3D%20makeButton('Add%20to%20favorites'%2C%20add)%3B%7D%20else%20%7Bbutton%20%3D%20makeButton('Remove%20from%20favorites'%2C%20del)%3B%7Dcontainer.appendChild(button)%3B%7Dvar%20buttonList%20%3D%20makeButton('Show%20favorites'%2C%20showList)%3Bcontainer.appendChild(buttonList)%3BupdateState()%3B%7D(window))%7D)()

MarketplaceFavorites.md

Just create a new bookmark in your browser (assuming it's not an IE6) and paste the code from the "bookmarklet" file as the address. Then just open any Marketplace Item page and prss this bookmark.

UE4 Marketplace Favorites

(function(){
	// TODO: no time to fix the container selector properly, should work for now
	var container = document.getElementsByClassName('asset-acquire__container')[0];
	if (!container) {
		return;
	}

	var storage = window.localStorage;
	if (!storage) {
		return;
	}

	if (window.favoritesBookmarklet) {
		return;
	}

	window.favoritesBookmarklet = true;

	var faveList = storage.faveList ? JSON.parse(storage.faveList) : [];

	function makeButton(text, onClick) {
		var btn = document.createElement('a');
		btn.className = 'btn';
		btn.href = '#';
		btn.innerHTML = text;
		btn.style = 'margin-top: 5px;';
		btn.addEventListener('click', function(e){
			e.preventDefault();
			if (typeof onClick == 'function') {
				onClick();
			}
		});
		return btn;
	}

	function save() {
		storage.faveList = JSON.stringify(faveList);

		updateState();
	}

	function add() {
		faveList.push({
			title: document.title,
			url: window.location.href
		});

		save();
	}
	function get() {
		return faveList.findIndex(function(item){
			return item.url = window.location.href;
		});
	}
	function del() {
		var exist = get();

		if (exist < 0) {
			return;
		}

		faveList.splice(exist, 1);

		save();
	}

	function closeFade() {
		var fade = document.getElementById('faveFade');
		document.body.removeChild(fade);
	}

	function showList() {
		var fade = document.createElement('div');
		fade.id = 'faveFade';
		fade.style = 'position: fixed; left: 0; top: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.2); z-index: 9999999;';
		fade.addEventListener('click', closeFade);
		var list = document.createElement('div');
		list.style = 'position: relative; left: 20px; top: 20px; display: block; width: 80%; height: 60%; background: #fff; padding: 10px; overflow: hidden; overflow-y: auto;';
		var ul = document.createElement('ul');
		ul.style = 'list-style: inside';
		faveList.forEach(function(item){
			var link = document.createElement('a');
			link.href = item.url;
			link.target = '_blank';
			link.innerHTML = item.title;
			var li = document.createElement('li');
			li.appendChild(link);
			ul.appendChild(li);
		});
		list.appendChild(ul);
		fade.appendChild(list);
		document.body.appendChild(fade);
	}


	var button;
	function updateState() {
		if (button) {
			container.removeChild(button);
		}
		var current = get();
		if (current < 0) {
			button = makeButton('Add to favorites', add);
		} else {
			button = makeButton('Remove from favorites', del);
		}
		container.appendChild(button);
	}

	var buttonList = makeButton('Show favorites', showList);
	container.appendChild(buttonList);

	updateState();

}(window));