top 10 boilerplate ever

static/main.js

@@ -0,0 +1,24 @@
+async function formClick(ev) {
+    ev.preventDefault();
+
+    let { target } = ev;
+
+    let fetched = await fetch(target.action, {
+        'method': 'POST',
+        'body': new FormData(target)
+    });
+
+    let json = await fetched.json();
+
+    document.querySelector('.form-message').textContent = json.message;
+
+    if (json.redirect) {
+        setTimeout(function () {
+            window.location.href = json.redirect;
+        }, 2000);
+    }
+}
+
+window.onload = function () {
+    document.addEventListener('submit', formClick);
+}