JSFiddle - React, Tailwind, and code Playground
HTML
<LINK rel="Index" href="index.html">
<LINK rel="Next" href="Chapter3.html">
<LINK rel="Prev" href="Chapter1.html">
JavaScript
var links = document.getElementsByTagName("link");
for ( var i = 0; i < links.length; i++ ) {
alert( links[i].getAttribute("rel") + ' : ' + links[i].getAttribute("href") );
}