Form serialize with jquery for ajax post

If you have normal form(like all text fields) to serialize form data use

$("#my-form").serialize(); 

Beside that if you have form enctype of “multipart/form-data” then use

new FormData(this)

Example:

$('#my-form') .submit( function(e) {
        var formData = new FormData(this);
        $.ajax({
            url: 'http://url',
            type: 'POST',
            data: formData,
            processData: false,  // tell jQuery not to process the data
            contentType: false   // tell jQuery not to set contentType
        });
        e.preventDefault();
    });

Ref

https://developer.mozilla.org/en-US/docs/Web/Guide/Using_FormData_Objects