Add official amazon listing hider

amaz.giveaway.user.js

@@ -0,0 +1,39 @@
+// ==UserScript==
+// @name Official Amazon Giveaway Listing Visited Remover
+// @namespace danielrayjones
+// @description Allow removal of visited links on Amazon Giveaway Listing
+// @include https://smile.amazon.com/ga/giveaways
+// @include https://www.amazon.com/ga/giveaways
+// @version 1.3
+// @require https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js
+// ==/UserScript==
+
+var checked = false;
+
+var hideOne = function(el) {
+  $(el).parents('div.a-spacing-base').css('display', checked ? 'none' : 'block');
+};
+
+var hideVisited = function(evt) {
+  checked = $(this).prop('checked');
+  var $links = $('.landingPageSpacings a[href*="amazon.com/ga"]');
+
+  $links.each(function() {
+    var href = $(this).attr('href');
+    if (localStorage.getItem(href)) {
+      hideOne(this);
+    }
+  });
+};
+
+$(document).ready(function() {
+  $('.landingPageSpacings').on('click', 'a[href*="amazon.com/ga"]', function(evt) {
+
+    var href = $(this).attr('href');
+    localStorage[href] = "visited";
+    hideOne(this);
+  });
+
+  $('h1:contains("Giveaways")').after('<label><input type="checkbox" id="hide_visited"/> Visited</label>');
+  $('#hide_visited').on('click', hideVisited);
+});