Yoinkit!

Yoinkit is a javascript lib enabling client apps running in the browser to download arbitrary content (both text and binary) to the user's file system.

What it is

The main Yoinkit method accepts four parameters:

• data: the content of the file to be downloaded
• encoding: the encoding of the data; the only supported values are undefined and "base64"; defaults to undefined (unencoded)
• contentType: the content-type of the downloaded file; should be a valid IANA media type, e.g., "image/png" or "text/plain"; defaults to "application/octet-stream"
• filename: the desired name of the downloaded file; defaults to "download"

Example:

require('yoinkit')({
  data: 'Hello World!',
  contentType: 'text/plain',
  filename: 'yoinkit.txt'
})

It is also possible to query the user-agent for support at runtime.

Example:

require('yoinkit').canYoinkit() // returns a Boolean value indicating support

See test/index.js for a working example.

How it do

In most browsers, Yoinkit will create a hidden anchor element with a dynamic data URL and programmatically click it to force a download.

In Microsoft browsers, Yoinkit will use Microsoft's proprietary msSaveBlob API to initiate a download.

Yoinkit is a CommonJS module and may be embedded within a browser using tools like Browserify or Webpack.

Sign me up!

Either compile from src/ using Browserify, or inject the compiled script from dist/ using a good old <script> tag.

Restrictions

Yoinkit does not work in IE versions 9 and below.

In Safari, the filename parameter is ignored and the downloaded file will have a name of "Unknown" with no .extension.

Development

npm install
npm start
open http://localhost:9966