Bookmarklet: show current url posted on Reddit

show-reddit-posts.js

// Create bookmarklet with: https://ted.mielczarek.org/code/mozilla/bookmarklet.html
var getPermalink = post => 'https://www.reddit.com'+post.data.permalink;
var getPermalinks = r => r.data.children.map(getPermalink);
var buildLink = url => {
	var a = document.createElement('a');
	a.href = url;
	a.textContent = url.match(/\/r\/[^/]+/) && url.match(/\/r\/[^/]+/)[0] || url;
	a.style.display = 'block';
	return a;
};
var buildLinks = urls => urls.map(buildLink);
var addLink = link => document.body.insertBefore(link, document.body.firstChild);
var log = a => console.log(a);
window.redditCalled = r => {
	var links = buildLinks(getPermalinks(r));
	if(!links.length) {
		alert('Current page not found on Reddit');
		return;
	}
	var overlay = document.createElement('div');
	overlay.style = 'position: fixed; z-index: 999999; top: 0; left: 0; max-width: 100%; padding: 1em; background: #fff;';
	links.map(link => overlay.appendChild(link));
	var button = document.createElement('button');
	button.textContent = 'Close';
	button.onclick = e => document.body.removeChild(overlay);
	overlay.appendChild(button);
	document.body.appendChild(overlay);
	window.scroll(0, 0);
};

var s = document.createElement('script');
s.src = 'https://www.reddit.com/api/info.json?jsonp=redditCalled&url='+encodeURIComponent(location.href);
document.head.appendChild(s);