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## Frequently Asked Questions
#### Does jQuery Form Plugin have any dependencies?
The only dependency is jQuery itself.

#### Which versions of jQuery is jQuery Form Plugin compatible with?
jQuery Form Plugin is compatible with jQuery v1.7.2 and later, including jQuery 2.x.x and 3.x.x.

#### Is jQuery Form Plugin fast? Does it serialize forms accurately?
Yes! See our [comparison page](http://malsup.com/jquery/form/comp/) for a look at how jQuery Form Plugin compares to other libraries (including Prototype and dojo).

#### What is the easiet way to use jQuery Form Plugin?
The `ajaxForm` method provides the simplest way to enable your HTML form to use AJAX. It's the one-stop-shopping method for preparing forms.

#### What is the difference between `ajaxForm` and `ajaxSubmit`?
There are two main differences between these methods:
1. `ajaxSubmit` submits the form, `ajaxForm` does not. When you invoke `ajaxSubmit` it immediately serializes the form data and sends it to the server. When you invoke `ajaxForm` it adds the necessary event listeners to the form so that it can detect when the form is submitted by the user. When this occurs `ajaxSubmit` is called for you.
2. When using `ajaxForm` the submitted data will include the name and value of the submitting element (or its click coordinates if the submitting element is an image).

#### How can I cancel a form submit?
You can prevent a form from being submitted by adding a 'beforeSubmit' callback function and returning false from that function. See the [Code Samples](http://malsup.com/jquery/form/#ajaxForm) page for an example.

#### Is there a unit test suite for jQuery Form Plugin?
Yes! jQuery Form Plugin has an extensive set of tests that are used to validate its functionality.  
[Run unit tests](http://malsup.com/jquery/form/test/)

#### Does jQuery Form Plugin support file uploads?
Yes!

#### Why aren't all my input values posted?
jQuery Form serialization adheres closely to the HTML spec. Only [successful controls](https://www.w3.org/TR/html5/forms.html#constructing-form-data-set) are valid for submission.

#### How do I display upload progress information?
[Demo](view-source:malsup.com/jquery/form/progress.html)