public/signup.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Sign Up to Bio Care</title>
    <link rel="stylesheet" href="signup.css" />
    <link rel="shortcut icon" href="images/favicon.ico" type="image/x-icon" />
  </head>
  <body>
    <div class="content">
      <div class="left">
        <h1>Sign Up</h1>
        <form id="signupForm">
          <div class="inputfield">
            <input type="text" id="name" name="fullName" required />
            <span>Full Name</span>
          </div>
          <div class="inputfield">
            <input type="text" id="mobile" name="mobile" required />
            <span>Mobile Number</span>
          </div>
          <div class="inputfield">
            <input type="password" id="password" name="password" required />
            <span>Password</span>
          </div>
          <button type="submit">Sign Up</button>
        </form>
      </div>
      <div class="right">
        <h1>Already Have an Account?</h1>
        <a href="login.html"><button>Log In</button></a>
      </div>
    </div>

    <script>
      document
        .getElementById("signupForm")
        .addEventListener("submit", async function (e) {
          e.preventDefault(); // Prevent traditional form submission

          // Collect the form data
          const name = document.getElementById("name").value;
          const mobile = document.getElementById("mobile").value;
          const password = document.getElementById("password").value;

          if (!name || !mobile || !password) {
            alert("All fields are required!");
            return;
          }

          // Send data to the backend
          try {
            const response = await fetch(
              "https://bio-care.onrender.com/signup",
              {
                method: "POST",
                headers: { "Content-Type": "application/json" },
                body: JSON.stringify({ name, mobile, password }),
              }
            );

            const data = await response.json(); // Always parse JSON response

            // Show message in a popup
            alert(data.message);

            if (response.ok) {
              // Save login status in localStorage
              localStorage.setItem("loggedIn", "true");

              // Redirect to index.html (home page)
              window.location.href = "index.html";
            }
          } catch (err) {
            alert("An error occurred: " + err.message);
          }
        });
    </script>
  </body>
</html>