Awesome

s3upload-coffee-javascript

Client Side S3 CORS Upload for Amazon S3 - CoffeeScript and JavaScript Class

Here is my blog post explaining all the implementation details

http://codeartists.tumblr.com/post/36892733572/how-to-directly-upload-files-to-amazon-s3-from-your

Options

file_dom_selector

The ID of the file input with associated files to upload

files

File blobs to be uploaded. (Supersedes DOM selector if present)

License

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.