How to download file into memory without writing the file to the system or without creating the file in a directory using javascript

Asked May 20 '21 at 07:35

Active May 20 '21 at 10:29

Viewed 189 times

I am looking for something like this, but using javascript. I want to download the file into javascript memory and then add the file content to a file input so that I can upload that again. I have written a function to access the file.

function fileDownload(url, callback) {
            var xhr = new XMLHttpRequest();
                xhr.open("GET", url, true);
                xhr.send();
                xhr.onload = function() {
            if (xhr.status != 200) { // analyze HTTP status of the response
                console.log(`Error ${xhr.status}: ${xhr.statusText}`); // e.g. 404: Not Found
            } else { // show the result
            callback(xhr.response)
  }
};
            }

So xhr supports the response type as text, arraybuffer, blob and document. So which type should I use? I want to support all types of files. Can I use blob?In that case how can I assign it to an input type of file. Please help.

edited May 20 '21 at 10:29

asked May 20 '21 at 07:35

Akhilesh

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If you are uploading file via Ajax, then you do not need to put it into file input. – Justinas May 20 '21 at 07:42
@Justinas I am working on an existing application. So I want it that way. My question is that is it possible to download file content into memory using javascript? – Akhilesh May 20 '21 at 07:46
Download from server? Yes. Put `` content dynamically? No. – Justinas May 20 '21 at 07:58
https://stackoverflow.com/questions/21883749/dynamically-adding-files-to-a-input – Justinas May 20 '21 at 07:59
@Justinas Yes. But I can dynamically add the file input with the file value right? – Akhilesh May 20 '21 at 09:13

How to download file into memory without writing the file to the system or without creating the file in a directory using javascript

0 Answers0