Adds a shortlink to Amazon product pages
// ==UserScript==
// @name Amazon Shortlinks
// @namespace https://github.com/felixfischer/show-amazon-shortlinks
// @version 1.5
// @description Adds a shortlink to Amazon product pages
// @supportURL https://github.com/felixfischer/show-amazon-shortlinks/issues
// @author Felix Fischer
// @include *www.amazon.*
// @include *smile.amazon.*
// @grant GM_setClipboard
// ==/UserScript==
(function(doc) {
var ASIN = doc.getElementById("ASIN") || doc.getElementsByName("ASIN.0")[0];
if (ASIN) {
ASIN = ASIN.value;
history.replaceState(null, "", "/dp/" + ASIN);
var amznTLDs = ['com', 'co.uk', 'de', 'fr'];
var noDpTLDs = ['com'];
var domainParts = window.location.hostname.split('.');
var TLD = domainParts.slice( domainParts.indexOf('amazon')+1 ).join('.');
var SLD = amznTLDs.includes(TLD) ? 'amzn' : 'amazon';
var pre = noDpTLDs.includes(TLD) ? '' : 'dp/';
var URL = `${SLD}.${TLD}/${pre}${ASIN}`;
var html =
`<div class="a-spacing-large a-text-center" id="my-shortlink" title="click to copy">
<a href="http://${URL}" onclick="return false">${URL}</a>
</div>`;
var pos = document.getElementById('tell-a-friend');
pos.insertAdjacentHTML('afterend', html);
var el = document.getElementById('my-shortlink');
el.onclick = function() {
GM_setClipboard('http://' + URL);
};
}
})(document);