Troubleshooting JavaScript Form Submissions: Resolving Conflicts between Multiple Forms

Ever tried submitting multiple forms on a webpage, only to find that one works while the other just refuses to cooperate? It's frustrating, we get it! But fear not, because we've got your back. In this blog post, we'll dive into the nitty-gritty of JavaScript form submissions and show you how to troubleshoot and resolve conflicts between multiple forms on your website.

1. Review the HTML code an example for 2 (two) forms called Subscribe Form and Contact Form.

              
                 <form class="subscribe-form">
                        <div class="subscribe-input">
                            <input type="text" name="email" required="required" 
                            placeholder="Your Email Address" />
                            <input type="submit" name="submit" id="subscribe1" 
                            value="Subscribe" class="btn-subscribe disableEnable-btn" />
                            <span id="subscribe-success-message"></span>
                        </div>
                  </form>

                  <form class="contact_form">
                        <h2>Let's discuss to start your project</h2>
                        <div class="input_box">
                            <input type="text" name="name" required="required">
                            <label>Full Name</label>
                        </div>
                        <div class="input_box">
                            <input type="text" name="phone" required="required">
                            <label>Phone</label>
                        </div>
                        <div class="input_box">
                            <input type="text" name="email" required="required">
                            <label>Email</label>
                        </div>
                        <div class="input_box">
                            <textarea name="message" required="required"></textarea>
                            <label>Message</label>
                        </div>
                        <div class="input_box">
                            <button type="submit" name="submit" id="contact1" value="Send" 
                            class="btn de-btn">Send</button>
                            <span id="form_success_message"></span>
                        </div>
                  </form>

                  <!-- Include the JavaScript file -->
                  <script src="main.js"></script>       
              
            



2. JavaScript Inclusion:

   Lastly, we're including a JavaScript file named "main.js." This file contains code to handle the form submissions.

3. JavaScript Code (main.js)

                     
                       document.addEventListener('DOMContentLoaded', function () {
                         const contactForm = document.querySelector(".contact_form");
                         const subscribeForm = document.querySelector(".subscribe-form");
                     
                         if (!contactForm) {
                             console.error('Contact form not found.');
                         }
                         if (!subscribeForm) {
                             console.error('Subscribe form not found.');
                         }
                     
                         if (contactForm) {
                             contactForm.addEventListener("submit", function(e) {
                                 e.preventDefault();
                                 console.log('Contact form submitted');
                                 // Rest of the contact form submission code...
                             });
                         }
                     
                         if (subscribeForm) {
                             subscribeForm.addEventListener("submit", function(e) {
                                 e.preventDefault();
                                 console.log('Subscribe form submitted');
                                 // Rest of the subscribe form submission code...
                             });
                         }
                     });
                     
                     
                   

4. Debugging Steps:
   1. Verify Form Selection: Double-check that the class names used to select the forms (".contact_form" and ".subscribe-form") match exactly with the class names in the HTML.
   2. Console Logs: Add console logs to verify if the forms are being correctly selected and if the event listeners are being attached.
   3. Check for Errors: Look for any JavaScript errors in the browser console that might indicate issues with the code execution.
   4. Event Listener Attachment: Ensure that the event listeners are attached inside the DOMContentLoaded event listener to ensure they are added after the DOM is fully loaded.
   5. Avoid Global Variables: If possible, avoid using global variables that might be shared between the two functions.
5. Explanation:
   1. Each event listener now encapsulates its respective form submission logic within an anonymous function.
   2. This ensures that each function operates independently and does not interfere with the other.
   3. By attaching the event listeners separately, you prevent potential conflicts between the two forms.

By implementing this solution, both forms should now work independently of each other without any interference. Happy coding!.