mailru/FileAPI at dev · GitHub

A set of javascript tools for working with files.

	<div>
		<!-- "js-fileapi-wrapper" -- required class -->
		<div class="js-fileapi-wrapper upload-btn" id="choose">
			<div class="upload-btn__txt">Choose files</div>
			<input name="files" type="file" multiple />
		</div>
		<div id="images"><!-- previews --></div>
	</div>

	<script>window.FileAPI = { staticPath: '/js/FileAPI/dist/' };</script>
	<script src="/js/FileAPI/dist/FileAPI.min.js"></script>
	<script>
		FileAPI.event.on(choose, 'change', function (evt){
			var files = FileAPI.getFiles(evt); // Retrieve file list

			FileAPI.filterFiles(files, function (file, info/**Object*/){
				if( /^image/.test(file.type) ){
					return	info.width >= 320 && info.height >= 240;
				}
				return	false;
			}, function (files/**Array*/, rejected/**Array*/){
				if( files.length ){
					// Make preview 100x100
					FileAPI.each(files, function (file){
						FileAPI.Image(file).preview(100).get(function (err, img){
							images.appendChild(img);
						});
					});

					// Uploading Files
					FileAPI.upload({
						url: './ctrl.php',
						files: { images: files },
						progress: function (evt){ /* ... */ },
						complete: function (err, xhr){ /* ... */ }
					});
				}
			});
		});
	</script>

Edit the file crossdomain.xml and place it to the root of the domain to which files will be uploaded.

	<script>
		window.FileAPI = {
			  debug: false   // debug mode, see Console
			, cors: false    // if used CORS, set `true`
			, media: false   // if used WebCam, set `true`
			, staticPath: '/js/FileAPI/dist/' // path to '*.swf'
			, postNameConcat: function (name, idx){
				// Default: object[foo]=1&object[bar][baz]=2
				// .NET: https://github.com/mailru/FileAPI/issues/121#issuecomment-24590395
				return	name + (idx != null ? '['+ idx +']' : '');
			}
		};
	</script>
	<script src="/js/FileAPI/dist/FileAPI.min.js"></script>

	<!-- OR -->

	<script>
		window.FileAPI = { /* options */ };
		require(['FileAPI'], function (FileAPI){
			// ...
		});
	</script>

Retrieve file list from input element or event object, also support jQuery.

• input — HTMLInputElement, change and drop event, jQuery collection or jQuery.Event

var el = document.getElement('my-input');
FileAPI.event.on(el, function (evt/**Event*/){
	// Retrieve file list
	var files = FileAPI.getFiles(el);

	// or event
	var files = FileAPI.getFiles(evt);
});

Get info of file (see also: FileAPI.addInfoReader).

• file — file object (https://developer.mozilla.org/en-US/docs/DOM/File)
• callback — function, called after collected info of file

// Get info of image file (FileAPI.exif.js included)
FileAPI.getInfo(file, function (err/**String*/, info/**Object*/){
	if( !err ){
		console.log(info); // { width: 800, height: 600, exif: {..} }
	}
});

// Get info of mp3 file (FileAPI.id3.js included)
FileAPI.getInfo(file, function (err/**String*/, info/**Object*/){
	if( !err ){
		console.log(info); // { title: "...", album: "...", artists: "...", ... }
	}
});

Filtering the list of files, with additional information about files. See also: FileAPI.getInfo and FileAPI.addInfoReader.

• files — original list of files
• filter — function, takes two arguments: file — the file itself, info — additional information.
• callback — function: list — files that match the condition, other — all the rest.

// Get list of file
var files = FileAPI.getFiles(input);

// Filter the List
FileAPI.filterFiles(files, function (file/**Object*/, info/**Object*/){
	if( /^image/.test(file.type) && info ){
		return	info.width > 320 && info.height > 240;
	} else {
		return	file.size < 20 * FileAPI.MB;
	}
}, function (list/**Array*/, other/**Array*/){
	if( list.length ){
		// ..
	}
});

Get a list of files, including directories.

• evt — drop event
• callback — function, takes one argument, a list of files

FileAPI.event.on(document, 'drop', function (evt/**Event*/){
	evt.preventDefault();

	// Get a list of files
	FileAPI.getDropFiles(evt, function (files/**Array*/){
		// ...
	});
});

Uploading files to the server (serial: true by default). Returns XHR-like object. It is important to remember to correctly worked flash-transport server response body must not be empty, for example, you can pass, just text "ok".

• opts — options object, see Upload options

var el = document.getElementById('my-input');
FileAPI.event.on(el, 'change', function (evt/**Event*/){
	var files = FileAPI.getFiles(evt);
	var xhr = FileAPI.upload({
		url: 'http://rubaxa.org/FileAPI/server/ctrl.php',
		files: { file: files[0] },
		complete: function (err, xhr){
			if( !err ){
				var result = FileAPI.parseJSON(xhr.responseText);
				// ...
			}
		}
	});
});

• url — a string containing the URL to which the request is sent
• files — Array, Object or HTMLInput

FileAPI.upload('./ctpl.php', files)
	.progress(function (evt){
		var p = (evt.loaded / evt.total)
	})
	.done(function (xhr){
		var result = FileAPI.parseJSON(xhr.responseText);
		// ...
	})
;

Load a remote file, by default as Blob.

• url — a string containing the URL to which the request is sent
• opts — request options: { headers, data, withCredentials, responseType: "blob" }

var xhr = FileAPI.load("/files/dino.png")
	.progress(function (evt/**Event*/, xhr/**XmlHttpRequest*/){
		var p = (evt.loaded / evt.total);
	})
	.done(function (blob/**Blob*/, xhr/**XmlHttpRequest*/){
		// Success
	})
	.fail(function (statusText, xhr/**XmlHttpRequest*/){
		alert('Error: '+statusText);
	})
;

Save file on disk.

• file — a string containing the URL or File/Blob object
• name — a file name

FileAPI.saveAs("/files/dino.png")
	.progress(function (evt){
		var p = (evt.loaded / evt.total);
	})
	.done(function (){
		// Success
	})
	.fail(function (err){
		alert('Error: '+err);
	})
;

Adds a handler for the collection of information about a file. See also: FileAPI.getInfo and FileAPI.filterFiles.

• mime — pattern of mime-type
• handler — takes two arguments: file object and complete function callback

FileAPI.addInfoReader(/^image/, function (file/**File*/, callback/**Function*/){
	// http://www.nihilogic.dk/labs/exif/exif.js
	// http://www.nihilogic.dk/labs/binaryajax/binaryajax.js
	FileAPI.readAsBinaryString(file, function (evt/**Object*/){
		if( evt.type == 'load' ){
			var binaryString = evt.result;
			var oFile = new BinaryFile(binaryString, 0, file.size);
			var exif  = EXIF.readFromBinaryFile(oFile);
			callback(false, { 'exif': exif || {} });
		}
		else if( evt.type == 'error' ){
			callback('read_as_binary_string');
		}
		else if( evt.type == 'progress' ){
			// ...
		}
	});
});

Reading the contents of the specified File as dataURL.

• file — file object
• callback — function, receives a result

FileAPI.readAsDataURL(file, function (evt/**Object*/){
	if( evt.type == 'load' ){
		// Success
	 	var dataURL = evt.result;
	} else if( evt.type =='progress' ){
		var pr = evt.loaded/evt.total * 100;
	} else {
		// Error
	}
})

Reading the contents of the specified File as BinaryString.

• file — file object
• callback — function, receives a result

FileAPI.readAsBinaryString(file, function (evt/**Object*/){
	if( evt.type == 'load' ){
		// Success
	 	var binaryString = evt.result;
	} else if( evt.type =='progress' ){
		var pr = evt.loaded/evt.total * 100;
	} else {
		// Error
	}
})

Reading the contents of the specified File as ArrayBuffer.

• file — file object
• callback — function, receives a result

FileAPI.readAsArrayBuffer(file, function (evt/**Object*/){
	if( evt.type == 'load' ){
		// Success
	 	var arrayBuffer = evt.result;
	} else if( evt.type =='progress' ){
		var pr = evt.loaded/evt.total * 100;
	} else {
		// Error
	}
})

Reading the contents of the specified File as text.

• file — file object
• callback — function, receives a result

FileAPI.readAsText(file, function (evt/**Object*/){
	if( evt.type == 'load' ){
		// Success
	 	var text = evt.result;
	} else if( evt.type =='progress' ){
		var pr = evt.loaded/evt.total * 100;
	} else {
		// Error
	}
})

Reading the contents of the specified File as text.

• encoding — a string indicating the encoding to use for the returned data. By default, UTF-8.

FileAPI.readAsText(file, "utf-8", function (evt/**Object*/){
	/*__*/
})

A string containing the URL to which the request is sent.

Additional post data to be sent along with the file uploads.

var xhr = FileAPI.upload({
	url: '...',
	data: { 'session-id': 123 },
	files: { ... },
});

Additional request headers, HTML5 or Flash only.

var xhr = FileAPI.upload({
	url: '...',
	headers: { 'x-upload': 'fileapi' },
	files: { .. },
});

Key-value object, key — post name, value — File or FileAPI.Image object. Or an array of files.

var xhr = FileAPI.upload({
	url: '...',
	files: {
		audio: files
	}
});

The parameter name for the file form data (the request argument name). Default: 'files'.

var xhr = FileAPI.upload({
	url: '...',
	files: myFiles,
	postName: 'images'
});

Serially uploading files to the server. Default: 'true'. false — only HTML5, all files are uploading to the server a single request.

var xhr = FileAPI.upload(
	  './ctrl.php'
	, files
	, { serial: false } // false — only HTML5
);

Number of parallel file uploads. Default: 0. Only HTML5.

var xhr = FileAPI.upload(
	  './ctrl.php'
	, files
	, { parallel: 3 } // только HTML5.
);

Chunk size in bytes, HTML5 only.

var xhr = FileAPI.upload({
	url: '...',
	files: { images: fileList },
	chunkSize: 0.5 * FileAPI.MB
});

Number of retries during upload chunks, HTML5 only.

var xhr = FileAPI.upload({
	url: '...',
	files: { images: fileList },
	chunkSize: 0.5 * FileAPI.MB,
	chunkUploadRetry: 3
});

--

Rules of changes the original image on the client.

var xhr = FileAPI.upload({
	url: '...',
	files: { image: imageFiles },
	// Changes the original image
	imageTransform: {
		// resize by max side
		maxWidth: 800,
		maxHeight: 600,
		// Add watermark
		overlay: [{ x: 10, y: 10, src: '/i/watemark.png', rel: FileAPI.Image.RIGHT_BOTTOM }]
	}
});

--

Rules of image transformation on the client, for more images.

var xhr = FileAPI.upload({
	url: '...',
	files: { image: imageFiles },
	imageTransform: {
		// resize by max side
		'huge': { maxWidth: 800, maxHeight: 600 },
		// crop & resize
		'medium': { width: 320, height: 240, preview: true },
		// crop & resize + watemark
		'small': {
			width: 100, height: 100, preview: true,
			// Add watermark
			overlay: [{ x: 5, y: 5, src: '/i/watemark.png', rel: FileAPI.Image.RIGHT_BOTTOM }]
		}
	}
});

--

Convert all images to jpeg or png.

var xhr = FileAPI.upload({
	url: '...',
	files: { image: imageFiles },
	imageTransform: {
		type: 'image/jpeg',
		quality: 0.86 // jpeg quality
	}
});

Sent to the server the original image or not, if defined imageTransform option.

--

Auto-rotate images on the basis of EXIF.

--

Prepare options upload for a particular file.

var xhr = FileAPI.upload({
	url: '...',
	files: { .. }
	prepare: function (file/**Object*/, options/**Object*/){
		options.data.secret = utils.getSecretKey(file.name);
	}
});

--

Start uploading.

var xhr = FileAPI.upload({
	url: '...',
	files: { .. }
	upload: function (xhr/**Object*/, options/**Object*/){
		// ...
	}
});

--

Start file uploading.

var xhr = FileAPI.upload({
	url: '...',
	files: { .. }
	uploadfile: function (file/**Object*/, xhr/**Object*/, options/**Object*/){
		// ...
	}
});

--

Callback for upload progress events.

var xhr = FileAPI.upload({
	url: '...',
	files: { .. }
	progress: function (evt/**Object*/, file/**Object*/, xhr/**Object*/, options/**Object*/){
		var pr = evt.loaded/evt.total * 100;
	}
});

--

Callback for upload file progress events.

var xhr = FileAPI.upload({
	url: '...',
	files: { .. }
	fileprogress: function (evt/**Object*/, file/**Object*/, xhr/**Object*/, options/**Object*/){
		var pr = evt.loaded/evt.total * 100;
	}
});

--

Callback for end upload requests.

var xhr = FileAPI.upload({
	url: '...',
	files: { .. }
	complete: function (err/**String*/, xhr/**Object*/, file/**Object/, options/**Object*/){
		if( !err ){
			// All files successfully uploaded.
		}
	}
});

--

Callback for end upload requests.

var xhr = FileAPI.upload({
	url: '...',
	files: { .. }
	filecomplete: function (err/**String*/, xhr/**Object*/, file/**Object/, options/**Object*/){
		if( !err ){
			// File successfully uploaded
			var result = xhr.responseText;
		}
	}
});

The name of the file referenced by the File object.

The type (MIME type) of the file referenced by the File object.

The size (in bytes) of the file referenced by the File object.

The status of the response to the request. This is the HTTP result code (for example, status is 200 for a successful request).

The response string returned by the HTTP server. Unlike status, this includes the entire text of the response message ("200 OK", for example).

The response to the request as a DOM Document object, or null if the request was unsuccessful, has not yet been sent, or cannot be parsed as XML or HTML. The response is parsed as if it were a text/xml stream. When the responseType is set to "document" and the request has been made asynchronously, the response is parsed as it were a text/html stream.

The response to the request as text, or null if the request was unsuccessful or has not yet been sent.

Aborts the request if it has already been sent.

Returns all the response headers as a string, or null if no response has been received.

Returns the string containing the text of the specified header, or null if either the response has not yet been received or the header doesn't exist in the response.

• name — header name

A function to be called if the request succeeds.

• callback — receives two arguments: xhr and options

A function to be called if the request failure.

• callback — receives three arguments: error, xhr and options

Attach an event handler function.

• el — DOM element
• events — one or more space-separated event types.
• handler — A function to execute when the event is triggered.

Remove an event handler.

• el — DOM element
• events — one or more space-separated event types.
• handler — a handler function previously attached for the event(s).

Attach an event handler function. The handler is executed at most once.

• el — DOM element
• events — one or more space-separated event types.
• handler — a function to execute when the event is triggered.

Attach an drag and drop event handler function.

• el — drop zone
• hover — dragenter and dragleave listener
• handler — drop event handler.

var el = document.getElementById('dropzone');
FileAPI.event.dnd(el, function (over){
	el.style.backgroundColor = over ? '#f60': '';
}, function (files){
	if( files.length ){
		// Upload their.
	}
});

// or jQuery
$('#dropzone').dnd(hoverFn, dropFn);

Remove an drag and drop event handler function.

• el — drop zone
• hover — dragenter and dragleave listener
• handler — drop event handler.

// Native
FileAPI.event.dnd.off(el, hoverFn, dropFn);

// jQuery
$('#dropzone').dndoff(hoverFn, dropFn);

--

Class for working with images

The constructor takes a single argument, the File object.

• file — the File object

FileAPI.Image(imageFile).get(function (err/**String*/, img/**HTMLElement*/){
	if( !err ){
		document.body.appendChild( img );
	}
});

Crop image by width and height.

• width — new image width
• height — new image height

FileAPI.Image(imageFile)
	.crop(640, 480)
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

Crop image by x, y, width and height.

• x — offset from the left corner
• y — offset from the top corner

FileAPI.Image(imageFile)
	.crop(100, 50, 320, 240)
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

Resize image.

• width — new image width
• height — new image height
• strategy — enum: min, max, preview. By default undefined.

FileAPI.Image(imageFile)
	.resize(320, 240)
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

// Resize image on by max side.
FileAPI.Image(imageFile)
	.resize(320, 240, 'max')
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

Crop and resize image.

• width — new image width
• height — new image height

FileAPI.Image(imageFile)
	.preview(100, 100)
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

Rotate image.

• deg — rotation angle in degrees

FileAPI.Image(imageFile)
	.rotate(90)
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

Auto rotate image by exif.

• type — "auto"

FileAPI.Image(imageFile)
	.rotate("auto")
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

Apply filter function. Only HTML5.

• callback — takes two arguments, canvas element and done method.

FileAPI.Image(imageFile)
	.filter(function (canvas/**HTMLCanvasElement*/, doneFn/**Function*/){
		// bla-bla-lba
		doneFn();
	})
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

Uses CamanJS, include it before FileAPI library.

• name — CamanJS filter name (custom or preset)

Caman.Filter.register("my-funky-filter", function () {
	// http://camanjs.com/guides/#Extending
});

FileAPI.Image(imageFile)
	.filter("my-funky-filter") // or .filter("vintage")
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

Add overlay images, eg: watermark.

• images — array of overlays

FileAPI.Image(imageFile)
	.overlay([
		// Left corner.
		{ x: 10, y: 10, w: 100, h: 10, src: '/i/watermark.png' },

		// Right bottom corner.
		{ x: 10, y: 10, src: '/i/watermark.png', rel: FileAPI.Image.RIGHT_BOTTOM }
	])
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

Get the final image.

• fn — complete callback

To work with a webcam, be sure to set FileAPI.media: true.

Publication of the camera.

• el — target
• options — { width: 100%, height: 100%, start: true }
• callback — the first parameter is a possible error, the second instance of FileAPI.Camera

var el = document.getElementById('cam');
FileAPI.Camera.publish(el, { width: 320, height: 240 }, function (err, cam/**FileAPI.Camera*/){
	if( !err ){
		// The webcam is ready, you can use it.
	}
});

Turn on the camera.

• callback — will be called when the camera ready

var el = document.getElementById('cam');
FileAPI.Camera.publish(el, { start: false }, function (err, cam/**FileAPI.Camera*/){
	if( !err ){
		// Turn on
		cam.start(function (err){
			if( !err ){
				// The camera is ready for use.
			}
		});
	}
});

Turn off the camera.

Take a picture with the camera.

var el = document.getElementById('cam');
FileAPI.Camera.publish(el, function (err, cam/**FileAPI.Camera*/){
	if( !err ){
		var shot = cam.shot(); // take a picture

		// create thumbnail 100x100
		shot.preview(100).get(function (err, img){
			previews.appendChild(img);
		});

		// and/or
		FileAPI.upload({
			url: '...',
			files: { cam: shot
		});
	}
});

1024 bytes

1048576 bytes

1073741824 bytes

1.0995116e+12 bytes

Iterate over a object or array, executing a function for each matched element.

• obj — array or object
• callback — a function to execute for each element.
• thisObject — object to use as this when executing callback.

--

Merge the contents of two objects together into the first object.

• dst — an object that will receive the new properties
• src — an object containing additional properties to merge in.

--

Creates a new array with all elements that pass the test implemented by the provided function.

• array — original Array
• callback — Function to test each element of the array.
• thisObject — object to use as this when executing callback.

• Multiupload: all browsers that support HTML5 or Flash
• Drag'n'Drop upload: files (HTML5) & directories (Chrome 21+)
• Chunked file upload (HTML5)
• Upload one file: all browsers
• Working with Images: IE6+, FF 3.6+, Chrome 10+, Opera 11.1+, Safari 5.4+
  • crop, resize, preview & rotate (HTML5 or Flash)
  • auto orientation by exif (HTML5, if include FileAPI.exif.js or Flash)

HTML5 borwser support

This cross-origin resource sharing is used to enable cross-site HTTP requests.

Drag'n'drop events support.

Availability Flash plugin.

Canvas support.

Support dataURI as src for image.

Support chuncked upload.

Support navigator.msSaveBlob.

Support for attribute download in a[href].

Support for attribute accept in input[type="file"].

Support for attribute multiple in input[type="file"].

Flash is very "buggy" thing :] The server response can not be empty. Therefore, in the event of a successful uploading http status should be only 200 OK.

Flash settings. It is advisable to place flash on the same server where the files will be uploaded.

<script>
	var FileAPI = {
	 	// @default: "./dist/"
		staticPath: '/js/',

		 // @default: FileAPI.staticPath + "FileAPI.flash.swf"
		flashUrl: '/statics/FileAPI.flash.swf',

		// @default: FileAPI.staticPath + "FileAPI.flash.image.swf"
		flashImageUrl: '/statics/FileAPI.flash.image.swf'
	};
</script>
<script src="/js/FileAPI.min.js"></script>

Necessarily make this file on the server. Do not forget to replace youdomain.com on the name of your domain.

<?xml version="1.0"?>
<!DOCTYPE cross-domain-policy SYSTEM "http://www.adobe.com/xml/dtds/cross-domain-policy.dtd">
<cross-domain-policy>
	<site-control permitted-cross-domain-policies="all"/>
	<allow-access-from domain="youdomain.com" secure="false"/>
	<allow-access-from domain="*.youdomain.com" secure="false"/>
	<allow-http-request-headers-from domain="*" headers="*" secure="false"/>
</cross-domain-policy>

The following sample HTTP POST request is sent from Flash Player to a server-side script if no parameters are specified:

POST /server/ctrl.php HTTP/1.1
Accept: text/*
Content-Type: multipart/form-data;
boundary=----------Ij5ae0ae0KM7GI3KM7
User-Agent: Shockwave Flash
Host: www.youdomain.com
Content-Length: 421
Connection: Keep-Alive
Cache-Control: no-cache

------------Ij5GI3GI3ei4GI3ei4KM7GI3KM7KM7
Content-Disposition: form-data; name="Filename"

MyFile.jpg
------------Ij5GI3GI3ei4GI3ei4KM7GI3KM7KM7
Content-Disposition: form-data; name="Filedata"; filename="MyFile.jpg"
Content-Type: application/octet-stream

[[..FILE_DATA_HERE..]]
------------Ij5GI3GI3ei4GI3ei4KM7GI3KM7KM7
Content-Disposition: form-data; name="Upload"

Submit Query
------------Ij5GI3GI3ei4GI3ei4KM7GI3KM7KM7--

<script>
(function (ctx, jsonp){
	'use strict';
	var status = {{httpStatus}}, statusText = "{{httpStatusText}}", response = "{{responseBody}}";
	try {
		ctx[jsonp](status, statusText, response);
	} catch (e){
		var data = "{\"id\":\""+jsonp+"\",\"status\":"+status+",\"statusText\":\""+statusText+"\",\"response\":\""+response.replace(/\"/g, '\\\\\"')+"\"}";
		try {
			ctx.postMessage(data, document.referrer);
		} catch (e){}
	}
})(window.parent, '{{request_param_callback}}');
</script>

<!-- or -->

<?php
	include './FileAPI.class.php';

	if( strtoupper($_SERVER['REQUEST_METHOD']) == 'POST' ){
		// Retrieve File List
		$files	= FileAPI::getFiles();

		// ... your logic

		// JSONP callback name
		$jsonp	= isset($_REQUEST['callback']) ? trim($_REQUEST['callback']) : null;

		// Server response: "HTTP/1.1 200 OK"
		FileAPI::makeResponse(array(
			  'status' => FileAPI::OK
			, 'statusText' => 'OK'
			, 'body' => array('count' => sizeof($files)
		), $jsonp);
		exit;
	}
?>

Enable CORS.

<?php
	// Permitted types of request
    header('Access-Control-Allow-Methods: POST, OPTIONS');

    // Describe custom headers
    header('Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Range, Content-Disposition, Content-Type');

    // A comma-separated list of domains
    header('Access-Control-Allow-Origin: ' . $_SERVER['HTTP_ORIGIN']);

	// Allow cookie
	header('Access-Control-Allow-Credentials: true');

    if( $_SERVER['REQUEST_METHOD'] == 'OPTIONS' ){
        exit;
    }

    if( $_SERVER['REQUEST_METHOD'] == 'POST' ){
        // ...
    }
?>

Client and server communicate to each other using the following HTTP headers and status codes.
Client explicitly sets the following headers:

• Content-Range: bytes <start-offset>-<end-offset>/<total>
• Content-Disposition: attachment; filename=<file-name>

• 200 - last chunk is uploaded
• 201 - chunk is successfully saved
• 416 - range is not acceptable error, recoverable
• 500 - server error, recoverable

Simple input[type="file"]

<span class="js-fileapi-wrapper" style="position: relative; display: inline-block;">
    <input name="files" type="file" multiple/>
</span>

Stylized button.

<style>
.upload-btn {
    width: 130px;
    height: 25px;
    overflow: hidden;
    position: relative;
    border: 3px solid #06c;
    border-radius: 5px;
    background: #0cf;

}
    .upload-btn:hover {
        background: #09f;
    }
    .upload-btn__txt {
        z-index: 1;
        position: relative;
        color: #fff;
        font-size: 18px;
        font-family: "Helvetica Neue";
        line-height: 24px;
        text-align: center;
        text-shadow: 0 1px 1px #000;
    }
    .upload-btn input {
        top: -10px;
        right: -40px;
        z-index: 2;
        position: absolute;
        cursor: pointer;
        opacity: 0;
        filter: alpha(opacity=0);
        font-size: 50px;
    }
</style>
<div class="js-fileapi-wrapper upload-btn">
    <div class="upload-btn__txt">Upload files</div>
    <input name="files" type="file" multiple />
</div>

Button like link.

<style>
.upload-link {
    color: #36c;
    display: inline-block;
    *zoom: 1;
    *display: inline;
    overflow: hidden;
    position: relative;
    padding-bottom: 2px;
    text-decoration: none;
}
    .upload-link__txt {
        z-index: 1;
        position: relative;
        border-bottom: 1px dotted #36c;
    }
        .upload-link:hover .upload-link__txt {
            color: #f00;
            border-bottom-color: #f00;
        }

    .upload-link input {
        top: -10px;
        right: -40px;
        z-index: 2;
        position: absolute;
        cursor: pointer;
        opacity: 0;
        filter: alpha(opacity=0);
        font-size: 50px;
    }
</style>
<a class="js-fileapi-wrapper upload-link">
    <span class="upload-link__txt">Upload photo</span>
    <input name="photo" type="file" accept="image/*" />
</a>

npm install fileapi
cd fileapi
npm install
grunt

• + Flash-fallback for `readAsDataURL`, `readAsBinaryString` and `readAsText`
• + `FileAPI.upload(url, files[, opts])`
• #134: + `FileAPI.getMimeType(file)`
• + `serial: true` upload option
• + `parallel: Number` upload option
• + `postName: 'files'` uplaod option
• + `FileAPI.saveAs(file, name)` uplaod option

• + #176: Add params to the beginning of form
• + #190: Add 204 as a successful response
• + #192: many bugfixes; + `retry` & `multipass` options; + QUnit-tests for BigSizeImage

• + QUnit-tests for iframe-transport
• + `postMessage` for iframe-transport
• + `jsonp: "callback"` option
• * resize: `imageTransform.type` rename to `imageTransform.strategy` (!!!)
• + #165 (#140: fix)

• + test: upload headers
• + test: upload + camanjs
• + test: upload + autoOrientation
• FileAPI.class.php: + HTTP header Content-Type: application/json
• #143: + `FileAPI.flashWebcamUrl` option
• * merge v1.2.7
• + `FileAPI.formData: true` option

• + support 'filter' prop in imageTransform

• + FileAPI.Camera (HTML5 and Flash fallback)
• + jquery.fileapi.js, see demo
• + npm support
• + grunt support
• + requirejs support
• + [#80](https://https://github.com/mailru/FileAPI/issues/80): FileAPI.Image.fn.overlay
• `imageTransform` — now supports: `crop`, `type`, `quality` and `overlay` properties.
• Improved the documentation
• +iOS fix (https://github.com/blueimp/JavaScript-Load-Image)
• [#121](https://github.com/mailru/FileAPI/issues/121): + FileAPI.`postNameConcat:Function(name, idx)`
• [#116](https://github.com/mailru/FileAPI/issues/116): + `cache:false` option for FileAPI.upload
• fix `isArray` for Safari 5

• [#91](https://github.com/mailru/FileAPI/issues/91): replace `new Image` to `FileAPI.newImage`
• + FileAPI.withCredentials: true
• [#90](https://github.com/mailru/FileAPI/issues/90): Fixed `progress` event
• [#105](https://github.com/mailru/FileAPI/issues/105): Fixed `image/jpg` -> `image/jpeg`
• [#108](https://github.com/mailru/FileAPI/issues/108): Check width/height before resize by type(min/max)

• [#86](#86): Smarter upload recovery
• [#87](https://github.com/mailru/FileAPI/issues/87): Fixed upload files into browsers that do not support FormData
• Fixed support "accept" attribute for Flash.
• Fixed detection of HTML5 support for FireFox 3.6
• + FileAPI.html5 option, default "true"

• Fixed auto orientation image by EXIF (Flash)
• Fixed image dimensions after rotate (Flash)
• [#82](https://github.com/mailru/FileAPI/issues/82): "undefined" data-fields cause exceptions
• [#83](https://github.com/mailru/FileAPI/issues/83): Allow requests without files
• [#84](#84): Fixed connection abort when waiting for connection recovery

• [#77](#77): Fixed flash.abort(), [#75](https://github.com/mailru/FileAPI/issues/75)
• - `FileAPI.addMime`
• + `FileAPI.accept` — fallback for flash.

• [#67](#67): Added correct httpStatus for upload fail, [#62](#68)
• [#68](#68) Added "Content-Type" for chunked upload, [#65](https://github.com/mailru/FileAPI/pull/65)
• [#69](#69): Fixed network down recovery
• Fixed progress event, [#66](https://github.com/mailru/FileAPI/issues/66)
• Increase flash stage size, [#73](#73)
• - array index from POST-param "name", [#72](https://github.com/mailru/FileAPI/issues/72)
• - dependency on FileAPI.Image for FileAPI.Flash

• [#64](#64): Bufixed for [#63](https://github.com/mailru/FileAPI/issues/63)

• [#57](#57): Chunked file upload

• [#54](https://github.com/mailru/FileAPI/issues/54): added `FileAPI.flashUrl` and `FileAPI.flashImageUrl`

• [#51](https://github.com/mailru/FileAPI/issues/51): remove circular references from `file-objects` (Flash transport)
• added `changelog`

• first release