導入拖曳上傳檔案的好選擇，跨瀏覽器、原生JavaScript又加上百分百免費開源，只要載入一隻JavaScript就可以開始運作，不依賴其他程式

GitHub Star: 7,400
Javascripting Overall: 88%
瀏覽器: Chrome、Firefox和IE10+
RWD: 不支援(可運作)
License: MIT

《安裝》

• CDN

    <!-- jQuery v1.9.1 -->
    <script src="https://code.jquery.com/jquery-1.9.1.min.js"></script>
    <!-- Fine Uploader v5.15.5 -->
    <link href="https://cdnjs.cloudflare.com/ajax/libs/file-uploader/5.15.5/jquery.fine-uploader/fine-uploader.min.css" rel="stylesheet" />
    <link href="https://cdnjs.cloudflare.com/ajax/libs/file-uploader/5.15.5/all.fine-uploader/fine-uploader-gallery.min.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/file-uploader/5.15.5/fine-uploader.min.js"></script>
    <script type="text/template" id="qq-template-gallery">
    	<div class="qq-uploader-selector qq-uploader qq-gallery" qq-drop-area-text="Drop files here">
    		<div class="qq-total-progress-bar-container-selector qq-total-progress-bar-container">
    			<div role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" class="qq-total-progress-bar-selector qq-progress-bar qq-total-progress-bar"></div>
    		</div>
    		<div class="qq-upload-drop-area-selector qq-upload-drop-area" qq-hide-dropzone>
    			<span class="qq-upload-drop-area-text-selector"></span>
    		</div>
    		<div class="qq-upload-button-selector qq-upload-button">
    			<div>Upload a file</div>
    		</div>
    		<span class="qq-drop-processing-selector qq-drop-processing">
    			<span>Processing dropped files...</span>
    			<span class="qq-drop-processing-spinner-selector qq-drop-processing-spinner"></span>
    		</span>
    		<ul class="qq-upload-list-selector qq-upload-list" role="region" aria-live="polite" aria-relevant="additions removals">
    			<li>
    				<span role="status" class="qq-upload-status-text-selector qq-upload-status-text"></span>
    				<div class="qq-progress-bar-container-selector qq-progress-bar-container">
    					<div role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" class="qq-progress-bar-selector qq-progress-bar"></div>
    				</div>
    				<span class="qq-upload-spinner-selector qq-upload-spinner"></span>
    				<div class="qq-thumbnail-wrapper">
    					<img class="qq-thumbnail-selector" qq-max-size="120" qq-server-scale>
    				</div>
    				<button type="button" class="qq-upload-cancel-selector qq-upload-cancel">X</button>
    				<button type="button" class="qq-upload-retry-selector qq-upload-retry">
    					<span class="qq-btn qq-retry-icon" aria-label="Retry"></span>
    					Retry
    				</button>
    				<div class="qq-file-info">
    					<div class="qq-file-name">
    						<span class="qq-upload-file-selector qq-upload-file"></span>
    						<span class="qq-edit-filename-icon-selector qq-edit-filename-icon" aria-label="Edit filename"></span>
    					</div>
    					<input class="qq-edit-filename-selector qq-edit-filename" tabindex="0" type="text">
    					<span class="qq-upload-size-selector qq-upload-size"></span>
    					<button type="button" class="qq-btn qq-upload-delete-selector qq-upload-delete">
    						<span class="qq-btn qq-delete-icon" aria-label="Delete"></span>
    					</button>
    					<button type="button" class="qq-btn qq-upload-pause-selector qq-upload-pause">
    						<span class="qq-btn qq-pause-icon" aria-label="Pause"></span>
    					</button>
    					<button type="button" class="qq-btn qq-upload-continue-selector qq-upload-continue">
    						<span class="qq-btn qq-continue-icon" aria-label="Continue"></span>
    					</button>
    				</div>
    			</li>
    			</ul>
    		<dialog class="qq-alert-dialog-selector">
    			<div class="qq-dialog-message-selector"></div>
    			<div class="qq-dialog-buttons">
    				<button type="button" class="qq-cancel-button-selector">Close</button>
    			</div>
    		</dialog>
    		<dialog class="qq-confirm-dialog-selector">
    			<div class="qq-dialog-message-selector"></div>
    			<div class="qq-dialog-buttons">
    				<button type="button" class="qq-cancel-button-selector">No</button>
    				<button type="button" class="qq-ok-button-selector">Yes</button>
    			</div>
    		</dialog>
    		<dialog class="qq-prompt-dialog-selector">
    			<div class="qq-dialog-message-selector"></div>
    			<input type="text">
    			<div class="qq-dialog-buttons">
    				<button type="button" class="qq-cancel-button-selector">Cancel</button>
    				<button type="button" class="qq-ok-button-selector">Ok</button>
    			</div>
    		</dialog>
    	</div>
    </script>	
  

• npm

    $ npm install fine-uploader 
  

《範例》

• 包含拖曳和限制圖檔的上傳功能

    <div id="example"></div>
    <script>
    	var galleryUploader = new qq.FineUploader({
    		element: document.getElementById( "example" ), // 目標物件
    		template: "qq-template-gallery", // 模板物件
    		request: {
    			endpoint: "/server/uploads" // 上傳位置
    		},
    		thumbnails: {
    			placeholders: {
    				waitingPath: "https://cdnjs.cloudflare.com/ajax/libs/file-uploader/5.15.5/all.fine-uploader/placeholders/waiting-generic.png", // 讀取中
    				notAvailablePath: "https://cdnjs.cloudflare.com/ajax/libs/file-uploader/5.15.5/all.fine-uploader/placeholders/not_available-generic.png" // 路徑無效
    			}
    		},
    		validation: {
    			allowedExtensions: [ "jpeg", "jpg", "gif", "png" ] // 支援檔案類型
    		}
    	});
    </script>
  

《延伸》

1. Fine Uploader Javascript Upload Library
2. FineUploader/fine-uploader: Multiple file upload plugin with image previews, drag and drop, progress bars. S3 and Azure support, image scaling, form support, chunking, resume, pause, and tons of other features.