Challenges with receiving form submissions

I'm new to asking questions here, but I've been reading articles and questions for a while now. My question is about a specific part of a code that has been causing me trouble.

In my project, I have a registration form with both JS validation and server-side validation. I wanted to disable form submission until the JS validation passed, and I set certain conditions for that. However, I encountered a problem when those conditions were met. I tried using the following line to prevent form submission:

$('.memberReg').on('submit', function(){return false;});

For instance, in a situation like this:

if(response.okText == 'SUCCESS' && response.warning == null ) 
                        {

                            $('label[for="email"]').addClass("success");
                            $('label[for="email"]').append("<span>    is not yet registered!</span>");  
                            console.log(result);
                        }else 
                            {

                                $('label[for="email"]').addClass("error");
                                $('label[for="email"]').append("<span>   is already taken!</span>");
                                $('.memberReg').on('submit', function(){return false;});

                            } 

The issue here is that the form is blocked from submitting entirely, even when other conditions are met. In this example, even with the correct email, the form cannot be submitted anymore.

I attempted to use a variable with true-false statements for a validForm() function to submit the form, but the function kept looping and the form remained disabled.

I also tried using `return true` for form submission in the valid email part, but it had the same effect.

Does anyone know how to block form submission only under certain conditions without completely disabling it, so that the user would need to refresh the page to send the form?

Answer №1

After conducting several test runs, I believe I have finally found the solution that works seamlessly. In case anyone else encounters the same issue, I am sharing my approach here.

Initially, I was using the following code:

$('.memberReg').on('submit',function(){return false;});

It was brought to my attention by a helpful individual that this code was actually overwriting the submit handler. So, I decided to change my implementation approach to the following:

$( ".memeberReg" ).submit(function( event ) {
 if ( condition ) { 
       //successfulValidationCode
        return;
    } 
      //errorCode
      event.preventDefault();
})

In this new approach, I am checking the variables set in my field validations under specific conditions. If there is a bad input, I use event.preventDefault(); to prevent the form from submitting again.

Answer №2

The issue at hand stems from the fact that the submit handler is being overwritten, leading to its disappearance until a page reload occurs. In my opinion, this approach raises some concerns; ideally, one should not need to overwrite the submit handler in order to prevent form submission.

It's worth noting that what you're actually utilizing is JavaScript validation, not AJAX validation. AJAX involves sending a request to the server and potentially receiving a response, all without needing to refresh the page.

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