anchor_links.html

<script>
	var anchorForId = function (id) {
		var anchor = document.createElement("a");
		anchor.className = "header-link";
		anchor.href      = "#" + id;
		anchor.innerHTML = "<span class=\"sr-only\">Permalink</span><i class=\"fa fa-link\"></i>";
		anchor.title = "Permalink";
		return anchor;
	};

	var linkifyAnchors = function (level, containingElement) {
		var headers = containingElement.getElementsByTagName("h" + level);
		for (var h = 0; h < headers.length; h++) {
			var header = headers[h];

			if (typeof header.id !== "undefined" && header.id !== "") {
				header.appendChild(anchorForId(header.id));
			}
		}
	};

	document.onreadystatechange = function () {
		if (this.readyState === "complete") {
			var contentBlock = (
				document.getElementsByClassName("docs")[0] ||
				document.getElementsByClassName("tutorials")[0] ||
				document.getElementsByClassName("projects")[0] ||
				document.getElementsByClassName("news")[0]
			);
			if (!contentBlock) {
				return;
			}
			for (var level = 1; level <= 6; level++) {
				linkifyAnchors(level, contentBlock);
			}
		}
	};
</script>