Dismiss modal dialog automatically in Bootstrap and navigate to another page upon submission programmatically

Whenever a user visits a page that prompts them to register, I aim to present a Bootstrap modal dialogue asking for their ID and password. Upon clicking the submit button, my objectives are:

  1. To verify the password and complete sign-up
  2. To close the dialog
  3. To direct the user to another page displaying additional information

The current issue arises once the Submit button is pressed. Despite going through validation and attempting to hide the Bootstrap modal dialog, the page refreshes, causing the dialog to reappear repeatedly.

Here's the JSFiddle link

Below is the HTML content:

<!DOCTYPE html>

<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8" />
    <meta
      name="viewport"
      content="width=device-width, initial-scale=1, shrink-to-fit=no"
    />

    <!-- All relevant script sources -->

    <title>Immedia Signup</title>

    <!-- Relevant CSS links -->

    <style>
      /* Custom styling rules */
    </style>

  </head>
  <body onload="onloadHandler()">
   
    <header class="masthead mb-auto">
      <div class="inner">
        <h1 class="masthead-brand">Modal Test Page</h1>
      </div>
    </header>

    <!-- Modal containing sign-up form -->
    
    </div>
  
    <script>
      // JavaScript function definitions
      
      // Event listener to remove modal when hidden
      $("#signupModal").on("hidden.bs.modal", function() {
        $("body").removeClass("signupModal");
      });

      // Submission event for sign up form
      $("#submit-button").click(function() {
        // Form data extraction and processing logic
        
        try {
          // Sign-up process execution
          // Redirect user upon successful sign-up
        } catch (err) {
          console.error("Error encountered during sign-up: ", err);
         }
        
      });

      // Initial function trigger on page load
      function onloadHandler() {
        console.info("Page loaded");
        $("body").addClass("#signupModal");
        $("#signupModal").modal("toggle");
     }
    </script>
  </body>
</html>

Answer №1

When you click on a submit button within a form, it triggers a form submission which tries to redirect the request. If the form tag does not have action and method attributes specified, the browser doesn't know where to redirect the form submission, resulting in a blank page being displayed.

If you have added an action listener using JavaScript on the submit button, the code within that listener will execute first before the default action (form submission) takes place. To prevent the form submission from happening, you can use e.preventDefault().

The provided code functions as intended, leading to a blank page with a console error due to Content Security Policy restrictions when running the code on platforms like JSFiddle or Stack Overflow snippets. However, this indicates that the page redirection is working correctly and should function well in your application, even though external sites may not be displayed within these snippet environments.

The code snippet includes event handlers for modal functionality, form submissions, and page navigation upon successful sign-up, demonstrating how to handle user interactions effectively while adhering to security policies and best practices in web development.

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