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public/static/js/jarring.js

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+/**
+ * Reloading the page can feel jarring!
+ * Replace the content of the page without reloading the DOM
+ */
+onclick = (e) => {
+    let element = e.target;
+    if (element.tagName == 'A') {
+        navigate(element.href).then(function () {
+            window.history.pushState('', '', element.href);
+        });
+        return false; // prevent default action and stop event propagation
+    }
+};
+
+onpopstate = () => {
+    navigate(document.location);
+};
+
+function navigate(href) {
+    return new Promise((resolve) => {
+        fetch(href)
+            .then((response) => {
+                return response.text();
+            }).then(function (html) {
+                //var parser = new DOMParser();
+                //var doc = parser.parseFromString(html, 'text/html');
+                //document.getElementById('pageContent').innerHTML = doc.getElementById('pageContent').innerHTML;
+
+                document.body.parentNode.innerHTML = html;
+                resolve();
+            }).catch(function (err) {
+                // There was an error
+                console.warn('Something went wrong.', err);
+            });
+        }
+    );
+}