fu-s3-blog-js2.js

var uploader = new qq.s3.FineUploader({
    element: document.getElementById("fineUploader"),
    request: {
        endpoint: "http://mybucket.s3.amazonaws.com",
        accessKey: "MY_AWS_PUBLIC_ACCESS_KEY",
        params: {category: "foobar"}
    },
    signature: {
        endpoint: "/s3/signtureHandler"
    },
    uploadSuccess: {
        endpoint: "/s3/uploadSuccessful"
    },
    iframeSupport: {
        localBlankPagePath: "success.html"
    },
    objectProperties: {
        key: function(fileId) {
            var keyRetrieval = new qq.Promise(),
                filename = encodeURIComponent(uploader.getName(fileId)),
                xhr = new XMLHttpRequest();

            xhr.onreadystatechange = function() {
                if (xhr.readyState === 4) {
                    var status = xhr.status,
                        key = xhr.responseText;

                    if (status !== 200) {
                        keyRetrieval.failure();
                    }
                    else {
                        keyRetrieval.success(key);
                    }
                }
            }

            xhr.open("POST", "createKey.html?filename=" + filename);
            xhr.send();

            return keyRetrieval;
        }
    },
    validation: {
        allowedExtensions: ["gif", "jpeg", "jpg", "png"],
        acceptFiles: "image/gif, image/jpeg, image/png",
        sizeLimit: 5000000,
        itemLimit: 3
    },
    retry: {
        enableAuto: true
    },
    chunking: {
        enabled: true
    },
    resume: {
        enabled: true
    },
    deleteFile: {
        enabled: true,
        endpoint: "/fileHandler"
    },
    paste: {
        targetElement: document,
        promptForName: true
    }
});