fix register and login handler for future edits

Lab01/app/templates/login.tmpl

@@ -9,21 +9,22 @@
 {{template "navbar" .}}
 
 <div class="position-absolute top-50 start-50 translate-middle">
-    <form action="http://localhost:8080/register" method="POST">
-        <div class="mb-3">
-            <label for="username" class="form-label">Username</label>
-            <input type="text" class="form-control" id="username" aria-describedby="emailHelp">
-            <div id="emailHelp" class="form-text">The username needs to be unique</div>
-        </div>
-        <div class="mb-3">
-            <label for="password" class="form-label">Password</label>
-            <input type="password" class="form-control" id="password" aria-describedby="passwordHelp">
-            <div id="passwordHelp" class="form-text">The password needs to be different from the username</div>
-        </div>
-        <button type="submit" class="btn btn-primary">Submit</button>
-    </form>
+    <div class="fs-3">{{ .title }}</div>
+    <hr>
+    {{template "userForm" .}}
+    <a class="link-secondary" href="/register">Register instead</a>
 </div>
 
 {{template "scripts" .}}
+<script>
+    function submitForm(formData) {
+        fetch("/login", {method: 'POST', body: formData, redirect: 'follow'})
+            .then(response => response.json())
+            .then((json) => {
+                    console.log(json)
+                }
+            ).catch(error => console.log(error));
+    }
+</script>
 </body>
 </html>