Add target='_blank' to all external links on a page

external-links-to-new-tab

for(var c = document.getElementsByTagName("a"), a = 0; a < c.length; a++) {
	var b = c[a];
	b.getAttribute("href") && b.hostname !== location.hostname && (b.target = "_blank") && (b.target = "_blank") && b.classList.add("external-link");
}