deploy: a47170346a

js/external-links.js

@@ -0,0 +1,32 @@
+/*
+ * Marks links that leave the site with the class "nj-external", which brand.css turns into a small icon in front of
+ * the link. A link is external when its host is neither the current one nor the production site. Links in the page
+ * actions (edit, raw), buttons, header anchors, and links that only wrap an image (badges) are left alone.
+ * Runs through Material's document$ (navigation.instant), so it also applies after an instant page switch.
+ */
+(function () {
+    "use strict";
+
+    function mark() {
+        var links = document.querySelectorAll(".md-typeset a[href]");
+        for (var i = 0; i < links.length; i++) {
+            var a = links[i];
+            if (a.hostname === "" || a.hostname === location.hostname || a.hostname === "json.nlohmann.me") {
+                continue;
+            }
+            if (a.protocol !== "http:" && a.protocol !== "https:") {
+                continue;
+            }
+            if (a.matches(".md-button, .md-content__button, .headerlink") || a.querySelector("img, svg")) {
+                continue;
+            }
+            a.classList.add("nj-external");
+        }
+    }
+
+    if (window.document$ && window.document$.subscribe) {
+        window.document$.subscribe(mark);
+    } else {
+        document.addEventListener("DOMContentLoaded", mark);
+    }
+})();