'append' called on an object that does not implement interface FormData

Question

I\'m Trying to upload image on with jquery and ajax. But weird thing happened here. In console Log its showing

TypeError: \'append\' called on an obj

Answer 1

in order to use formdata with jquery you have to set the correct options

$.ajax({
    url : "/function/pro_pic_upload.php",
    type: "POST",
    data : postData,
    processData: false,
    contentType: false,
    success:function(data, textStatus, jqXHR){
        $("#pro_pix img").last().show();
        $("#pro_pix img").first().hide();
        $("#pro_pix h6").text(data);
    },
    error: function(jqXHR, textStatus, errorThrown){
        //if fails     
    }
});

.ajax reference

processData (default: true)

Type: Boolean

By default, data passed in to the data option as an object (technically, anything other than a string) will be processed and transformed into a query string, fitting to the default content-type "application/x-www-form-urlencoded". If you want to send a DOMDocument, or other non-processed data, set this option to false.