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javascriptform-data

Deleting objects stored in formData based on attribute other than key

I am storing files into formData like such:

formData.append("images[]", file)
formData.append("images[]", file_2)
formData.append("images[]", file_3)

I know it's possible to delete the files using formData.delete(), but in this case, since all of the keys are the same, how do I specifically delete the object where the value is for example, file_2?

Solution

  • The function getAll() returns an array containing all values of a specific key.

    var values = formData.getAll("images[]");

    Then you can delete a specific value from the array and set the modified array as new value.

    var index = values.indexOf(file_2); //only necessary if you dont know the index
values.splice(index, 1);
formData.set("images[]", values);