Damon.s Damon.s - 4 months ago 86
Ajax Question

How to remove value from FormData

Here is a way to

append
file to
FormData
:

var data = new FormData();
jQuery.each($('#file')[0].files, function(i, file) {
data.append('file-'+i, file);
});


is it possible to do as below ?

data[i].remove();???
or data[i] = file;??


how iIcan remove or modify a value from
data

Answer

You cannot do anything other than append items to a FormData object. See the Spec. It would be better if you use a dictionary/object to store all the values you want to add/modify before you actually construct the object.

var data = {};
jQuery.each($('#file')[0].files, function(i, file) {
  data['file-'+i] = file;
});

//modify the object however you want to here

var formData = new FormData();
for (var key in data) {
  formData.append(key, data[key]);
}