jquery fileupload formData input name -

i using jquery fileupload , want pass input name of file in formdata , have try fails.

i try use this.name seems dont have access of in formdata

formdata : { action:'upload', field:this.name , extensions : 'gif|jpeg|jpg|png'} 

i have try use data attributes dont post in case

<input id="input-image2" class="file-upload" type="file" name="image2"  data-form-data='{ action:'upload', field:image2 , extensions : 'gif|jpeg|jpg|png'}' > 

does know how add input name (in case image2) formdata?

the fileupload init follows

and need fill field param of formdata name of input file image2

$('.file-upload').fileupload({         url: '/myfile.php',          formdata : { action:'upload', field:this.name , extensions : 'gif|jpeg|jpg|png'},          acceptfiletypes: /(\.|\/)(gif|jpeg|jpg|png)$/i,          add : function (e, data) {                var type=data.files[0].type;             var size=data.files[0].size;             var name=data.files[0].name;              if(type=="image/gif" || type=="image/jpg" || type=="image/jpeg" || type=="image/png")              {                 data.submit();             }             else              {                 //data.submit();                 alert('please upload .gif, .jpeg, .jpg .png files');             }         },                           fail: function(e, data){             alert(data.jqxhr.responsetext);               },          datatype: 'json',         done: function (e, data)          {             //code here         },         progressall: function (e, data)          {              var progress = parseint(data.loaded / data.total * 100, 10);             $('#progress .progress-bar').css(                 'width',                 progress + '%'             );           }     }).prop('disabled', !$.support.fileinput)         .parent().addclass($.support.fileinput ? undefined : 'disabled'); 

any appriciated. thanks

just access input element id , use attr function on name attribute:

formdata : { action:'upload', field:$("#input-image2").attr("name"), extensions : 'gif|jpeg|jpg|png'};