Make Signup Process work like login

static/build/index.js

@@ -68,7 +68,6 @@ function checkUsernameAvailability() {
     xhr.send();
 }
 
-
 function submitSignup() {
     // Disable the button to prevent multiple clicks
     submitBtn.disabled = true;
@@ -93,23 +92,24 @@ function submitSignup() {
     formData.append("password", password);
 
     // Send the signup request as form data
-    fetch("/signup", {
-        method: "POST",
-        body: formData
-    })
-    .then(response => {
-        if (response.ok) {
-            return response.json();
-        } else {
-            throw new Error("Signup request failed");
+    const xhr = new XMLHttpRequest();
+    xhr.open("POST", "/signup", true);
+
+    xhr.onreadystatechange = function () {
+        if (xhr.readyState === 4) {
+            if (xhr.status === 200) {
+                // Signup successful
+                console.log("Signup successful");
+                window.location.href = "/welcome"; // Redirect to success page
+            } else {
+                // Signup failed, display the error message
+                const response = JSON.parse(xhr.responseText);
+                console.error("Signup failed:", response.error);
+            }
         }
-    })
-    .then(() => {
-        window.location.href = "/welcome";
-    })
-    .catch(error => {
-        console.error(error);
-    });
+    };
+
+    xhr.send(formData);
 
     // Enable the button and remove the spinner after 5 seconds
     setTimeout(function () {
@@ -121,6 +121,7 @@ function submitSignup() {
 
 
 
+
 function sleep(ms) {
     return new Promise(resolve => setTimeout(resolve, ms));
 }