Created
December 13, 2012 01:26
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HTML5のFile API サンプル
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| <!DOCTYPE html> | |
| <html lang="ja"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>File API Sample</title> | |
| <style type="text/css"> | |
| #file-input div.input { | |
| padding: 60px; | |
| border: solid 1px #333; | |
| width: 300px; | |
| height: 200px; | |
| } | |
| </style> | |
| <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script> | |
| <script type="text/javascript"> | |
| $(function() { | |
| var inEle = $('#file-input div.input'), | |
| outEle = $('#file-input div.out'); | |
| // ドラッグで画面遷移させない | |
| inEle | |
| .on('dragenter', function(e) { | |
| e.preventDefault(); | |
| }) | |
| .on('dragover', function(e){ | |
| e.preventDefault(); | |
| }) | |
| .on('drop', function(e){ | |
| e.preventDefault(); | |
| var files = e.originalEvent.dataTransfer.files; | |
| // 画像表示 | |
| for (var i=0; i<files.length; i++) { | |
| if (files[i].type.match('image.*')) { | |
| var reader = new FileReader(); | |
| //エラー処理 | |
| reader.onerror = function(e) { | |
| console.log('error', e.target.error.code); | |
| } | |
| //読み込み後の処理 | |
| reader.onload = function(e){ | |
| outEle.append('<img src="'+e.target.result+'" />'); | |
| }; | |
| reader.readAsDataURL(files[i]); | |
| } | |
| } | |
| // テキスト表示 | |
| /* | |
| for (var i=0; i<files.length; i++) { | |
| if (files[i].type === 'text/plain') { | |
| var reader = new FileReader(); | |
| //エラー処理 | |
| reader.onerror = function(e) { | |
| console.log('error', e.target.error.code); | |
| } | |
| //読み込み後の処理 | |
| reader.onload = function(e){ | |
| $('<div></div>').text(e.target.result).appendTo(outEle) | |
| }; | |
| reader.readAsText(files[i], 'shift-jis'); | |
| } | |
| } | |
| */ | |
| }); | |
| }); | |
| </script> | |
| </head> | |
| <body> | |
| <p>ファイルをドロップしてください。</p> | |
| <div id="file-input"> | |
| <div class="input"></div> | |
| <div class="out"></div> | |
| </div> | |
| </body> | |
| </html> |
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