通过AJAX发送2组数据

Im using ajax to send an image array:

data: ctx.imageDataArray

My question is, how can I also send the form data through:

$("#content-add-form").serialize(),

This does not seem to work:

data: ctx.imageDataArray + $("#content-add-form").serialize(),

Rather than appending the form data to the string, make it an object:

data: {
    imageDataArray: ctx.imageDataArray,
    formData: $("#content-add-form").serialize()
}