{"id":1485,"date":"2016-04-09T13:39:25","date_gmt":"2016-04-09T05:39:25","guid":{"rendered":"http:\/\/www.daliane.com\/?p=1485"},"modified":"2016-04-09T13:40:30","modified_gmt":"2016-04-09T05:40:30","slug":"js_filereader_lei_shi_yong_fen_xi","status":"publish","type":"post","link":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/js_filereader_lei_shi_yong_fen_xi\/","title":{"rendered":"js FileReader\u7c7b\u4f7f\u7528\u5206\u6790"},"content":{"rendered":"<p>\u8bdd\u8bf4\u4eca\u5929\u53ea\u662f\u7c97\u7565\u6d4f\u89c8\u4e86\u4e00\u4e0b<a href=\"https:\/\/code.google.com\/p\/switchysharp\/\">Proxy SwitchySharp\u7684\u6e90\u7801<\/a>\uff0c\u5c31\u6536\u83b7\u4e86\u4e0d\u5c11\u4e1c\u897f\uff0c\u5176\u4e2d\u5c31\u5305\u62ec\u672c\u6587\u8981\u4ecb\u7ecd\u7684\u8bfb\u53d6\u548c\u4fdd\u5b58\u6587\u4ef6\u3002<br \/>\n\u56e0\u4e3aGoogle\u8fd8\u4e0d\u63d0\u4f9b\u540c\u6b65\u63d2\u4ef6\u6570\u636e\u7684\u529f\u80fd\uff0c\u6240\u4ee5\u5bfc\u5165\u548c\u5bfc\u51fa\u63d2\u4ef6\u914d\u7f6e\u5c31\u5fc5\u987b\u548c\u6587\u4ef6\u6253\u4ea4\u9053\u4e86\u3002\u800c\u51fa\u4e8e\u5b89\u5168\u539f\u56e0\uff0c\u53ea\u6709IE\u624d\u63d0\u4f9b\u8bbf\u95ee\u6587\u4ef6\u7684API\uff1b\u4f46\u968f\u7740HTML 5\u7684\u5230\u6765\uff0c\u5176\u4ed6\u6d4f\u89c8\u5668\u4e5f\u7eb7\u7eb7\u652f\u6301\u4e86\u3002<\/p>\n<p>\u9996\u5148\u8bf4\u8bfb\u53d6\u6587\u4ef6\u3002W3C\u63d0\u4f9b\u4e86\u4e00\u4e9b<a href=\"http:\/\/www.w3.org\/TR\/FileAPI\/\">File API<\/a>\uff0c\u5176\u4e2d\u6700\u91cd\u8981\u7684\u662f<a href=\"https:\/\/developer.mozilla.org\/en\/DOM\/FileReader\">FileReader<\/a>\u8fd9\u4e2a\u7c7b\u3002<\/p>\n<p>\u5148\u5217\u51fa\u9700\u8981\u7528\u5230\u7684HTML\u6807\u7b7e\uff1a<\/p>\n<pre class=\"brush:xhtml;first-line:1;pad-line-numbers:true;highlight:null;collapse:false;\">&lt;input type=\"file\" id=\"file\" onchange=\"handleFiles(this.files)\"\/&gt;\r\n<\/pre>\n<p>&nbsp;<\/p>\n<p>\u5f53\u9009\u62e9\u4e86\u4e00\u4e2a\u6587\u4ef6\u65f6\uff0c\u5c31\u4f1a\u628a\u5305\u542b\u8fd9\u4e2a\u6587\u4ef6\u7684\u5217\u8868\uff08\u4e00\u4e2aFileList\u5bf9\u8c61\uff09\u4f5c\u4e3a\u53c2\u6570\u4f20\u7ed9handleFiles()\u51fd\u6570\u4e86\u3002<br \/>\n\u8fd9\u4e2aFileList\u5bf9\u8c61\u7c7b\u4f3c\u4e00\u4e2a\u6570\u7ec4\uff0c\u53ef\u4ee5\u77e5\u9053\u6587\u4ef6\u7684\u6570\u76ee\uff0c\u800c\u5b83\u7684\u5143\u7d20\u5c31\u662fFile\u5bf9\u8c61\u4e86\u3002<br \/>\n\u4ece\u8fd9\u4e2aFile\u5bf9\u8c61\u53ef\u4ee5\u83b7\u53d6name\u3001size\u3001lastModifiedDate\u548ctype\u7b49\u5c5e\u6027\u3002<br \/>\n\u628a\u8fd9\u4e2aFile\u5bf9\u8c61\u4f20\u7ed9FileReader\u5bf9\u8c61\u7684\u8bfb\u53d6\u65b9\u6cd5\uff0c\u5c31\u80fd\u8bfb\u53d6\u6587\u4ef6\u4e86\u3002<\/p>\n<p>FileReader\u5171\u67094\u79cd\u8bfb\u53d6\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>readAsArrayBuffer(file)\uff1a\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a<a href=\"https:\/\/developer.mozilla.org\/en\/JavaScript_typed_arrays\/ArrayBuffer\">ArrayBuffer<\/a>\u3002<\/li>\n<li>readAsBinaryString(file)\uff1a\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u4e8c\u8fdb\u5236\u5b57\u7b26\u4e32<\/li>\n<li>readAsDataURL(file)\uff1a\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a<a href=\"http:\/\/www.keakon.net\/2010\/02\/02\/%E5%8E%9F%E6%9D%A5%E6%B5%8F%E8%A7%88%E5%99%A8%E8%BF%98%E6%94%AF%E6%8C%81dataURI%E5%8D%8F%E8%AE%AE\">Data URL<\/a><\/li>\n<li>readAsText(file, [encoding])\uff1a\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u6587\u672c\uff0cencoding\u7f3a\u7701\u503c\u4e3a&#8217;UTF-8&#8242;<\/li>\n<\/ul>\n<p>\u6b64\u5916\uff0cabort()\u65b9\u6cd5\u53ef\u4ee5\u505c\u6b62\u8bfb\u53d6\u6587\u4ef6\u3002<\/p>\n<p>FileReader\u5bf9\u8c61\u5728\u8bfb\u53d6\u6587\u4ef6\u540e\uff0c\u8fd8\u9700\u8981\u8fdb\u884c\u5904\u7406\u3002\u4e3a\u4e86\u4e0d\u963b\u585e\u5f53\u524d\u7ebf\u7a0b\uff0cAPI\u91c7\u7528\u4e86\u4e8b\u4ef6\u6a21\u578b\uff0c\u53ef\u4ee5\u6ce8\u518c\u8fd9\u4e9b\u4e8b\u4ef6\uff1a<\/p>\n<ul>\n<li>onabort\uff1a\u4e2d\u65ad\u65f6\u89e6\u53d1<\/li>\n<li>onerror\uff1a\u51fa\u9519\u65f6\u89e6\u53d1<\/li>\n<li>onload\uff1a\u6587\u4ef6\u6210\u529f\u8bfb\u53d6\u5b8c\u6bd5\u65f6\u89e6\u53d1<\/li>\n<li>onloadend\uff1a\u6587\u4ef6\u8bfb\u53d6\u5b8c\u6bd5\u65f6\u89e6\u53d1\uff0c\u65e0\u8bba\u662f\u5426\u5931\u8d25<\/li>\n<li>onloadstart\uff1a\u6587\u4ef6\u5f00\u59cb\u8bfb\u53d6\u65f6\u89e6\u53d1<\/li>\n<li>onprogress\uff1a\u5f53\u6587\u4ef6\u8bfb\u53d6\u65f6\uff0c\u5468\u671f\u6027\u5730\u89e6\u53d1<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>\u6709\u4e86\u8fd9\u4e9b\u65b9\u6cd5\u4ee5\u540e\uff0c\u5c31\u53ef\u4ee5\u5904\u7406\u6587\u4ef6\u4e86\u3002<br \/>\n\u5148\u6765\u8bd5\u8bd5\u8bfb\u53d6\u6587\u672c\u6587\u4ef6\uff1a<\/p>\n<pre class=\"brush:js;first-line:1;pad-line-numbers:true;highlight:null;collapse:false;\">function handleFiles(files) {\r\n    if (files.length) {\r\n        var file = files[0];\r\n        var reader = new FileReader();\r\n        if (\/text\/w+\/.test(file.type)) {\r\n            reader.onload = function() {\r\n                $('&lt;pre&gt;' + this.result + '&lt;\/pre&gt;').appendTo('body');\r\n            }\r\n            reader.readAsText(file);\r\n        }\r\n    }\r\n}\r\n<\/pre>\n<p>\u8fd9\u91cc\u7684this.result\u5b9e\u9645\u4e0a\u5c31\u662freader.result\uff0c\u4e5f\u5c31\u662f\u8bfb\u53d6\u51fa\u6765\u7684\u6587\u4ef6\u5185\u5bb9\u3002<br \/>\n\u6d4b\u8bd5\u4e00\u4e0b\u4f60\u4f1a\u53d1\u73b0\u8fd9\u4e2a\u6587\u4ef6\u7684\u5185\u5bb9\u88ab\u6dfb\u52a0\u5230\u7f51\u9875\u4e2d\u4e86\u3002\u5982\u679c\u662f\u7528Chrome\u7684\u8bdd\uff0c\u5fc5\u987b\u628a\u7f51\u9875\u653e\u5728\u670d\u52a1\u5668\u4e0a\u6216\u63d2\u4ef6\u91cc\uff0cfile\u534f\u8bae\u4e0b\u4f1a\u5931\u8d25\u3002<\/p>\n<p>\u518d\u6765\u8bd5\u8bd5\u56fe\u7247\uff0c\u56e0\u4e3a\u6d4f\u89c8\u5668\u53ef\u4ee5\u76f4\u63a5\u663e\u793aData URI\u534f\u8bae\u7684\u56fe\u7247\uff0c\u6240\u4ee5\u8fd9\u6b21\u5c31\u6dfb\u52a0\u56fe\u7247\uff1a<\/p>\n<pre class=\"brush:js;first-line:1;pad-line-numbers:true;highlight:null;collapse:false;\">function handleFiles(files) {\r\n    if (files.length) {\r\n        var file = files[0];\r\n        var reader = new FileReader();\r\n        if (\/text\/w+\/.test(file.type)) {\r\n            reader.onload = function() {\r\n                $('&lt;pre&gt;' + this.result + '&lt;\/pre&gt;').appendTo('body');\r\n            }\r\n            reader.readAsText(file);\r\n        } else if(\/image\/w+\/.test(file.type)) {\r\n            reader.onload = function() {\r\n                $('&lt;img src=\"' + this.result + '\"\/&gt;').appendTo('body');\r\n            }\r\n            reader.readAsDataURL(file);\r\n        }\r\n    }\r\n}\r\n<\/pre>\n<p>\u5176\u5b9einput:file\u63a7\u4ef6\u8fd8\u652f\u6301\u9009\u62e9\u591a\u4e2a\u6587\u4ef6\uff1a<\/p>\n<pre class=\"brush:xhtml;first-line:1;pad-line-numbers:true;highlight:null;collapse:false;\">&lt;input type=\"file\" id=\"files\" multiple=\"\" onchange=\"handleFiles(this.files)\"\/&gt;\r\n<\/pre>\n<p>\u8fd9\u6837handleFiles()\u91cc\u5c31\u9700\u8981\u904d\u5386\u5904\u7406files\u4e86\u3002<\/p>\n<p>\u5982\u679c\u53ea\u60f3\u8bfb\u53d6\u90e8\u5206\u6570\u636e\u7684\u8bdd\uff0cFile\u5bf9\u8c61\u8fd8\u6709webkitSlice()\u6216mozSlice()\u65b9\u6cd5\uff0c\u7528\u4e8e\u751f\u6210Blob\u5bf9\u8c61\u3002\u8fd9\u4e2a\u5bf9\u8c61\u53ef\u4ee5\u548cFile\u5bf9\u8c61\u4e00\u6837\u88abFileReader\u8bfb\u53d6\u3002\u8fd92\u4e2a\u65b9\u6cd5\u63a5\u65363\u4e2a\u53c2\u6570\uff1a\u7b2c1\u4e2a\u53c2\u6570\u662f\u8d77\u59cb\u4f4d\u7f6e\uff1b\u7b2c2\u4e2a\u662f\u7ed3\u675f\u4f4d\u7f6e\uff0c\u7701\u7565\u65f6\u5219\u8bfb\u5230\u6587\u4ef6\u7ed3\u5c3e\uff1b\u7b2c3\u4e2a\u662fcontent type\u3002<br \/>\n\u4f8b\u5b50\u53ef\u4ee5\u53c2\u8003<a href=\"http:\/\/www.html5rocks.com\/en\/tutorials\/file\/dndfiles\/\">\u300aReading local files in JavaScript\u300b<\/a>\u3002<\/p>\n<p>\u5f53\u7136\uff0c\u9664\u4e86\u5bfc\u5165\u6570\u636e\u548c\u663e\u793a\u6587\u4ef6\u4ee5\u5916\uff0c\u5b83\u8fd8\u53ef\u4ee5\u7528\u6765\u505aAJAX\u4e0a\u4f20\uff0c\u4ee3\u7801\u53ef\u4ee5\u53c2\u8003<a href=\"https:\/\/developer.mozilla.org\/en\/Using_files_from_web_applications\">\u300aUsing files from web applications\u300b<\/a>\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\u8bf4\u4fdd\u5b58\u6587\u4ef6\u3002<br \/>\n\u5b9e\u9645\u4e0a<a href=\"http:\/\/www.w3.org\/TR\/file-writer-api\/\">File API: Writer<\/a>\u63d0\u4f9b\u4e864\u4e2a\u63a5\u53e3\uff0c\u4f46\u76ee\u524d\u53ea\u6709\u90e8\u5206\u6d4f\u89c8\u5668\uff08Chrome 8+\u548cFirefox 4+\uff09\u5b9e\u73b0\u4e86BlobBuilder\uff0c\u5176\u4f59\u63a5\u53e3\u90fd\u4e0d\u53ef\u7528\u3002<br \/>\n\u5bf9\u4e8e\u4e0d\u652f\u6301\u7684\u6d4f\u89c8\u5668\uff0c\u53ef\u4ee5\u4f7f\u7528<a href=\"https:\/\/github.com\/eligrey\/BlobBuilder.js\">BlobBuilder.js<\/a>\u548c<a href=\"https:\/\/github.com\/eligrey\/FileSaver.js\">FileSaver.js<\/a>\u6765\u83b7\u5f97\u652f\u6301\u3002<br \/>\n\u6211\u7814\u7a76\u4e86\u4e00\u4e0b\uff0c\u53d1\u73b0\u4e86\u5176\u4e2d\u7684\u5965\u79d8\u3002<\/p>\n<p>BlobBuilder\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2aBlob\u5bf9\u8c61\u3002\u628a\u8fd9\u4e2aBlob\u5bf9\u8c61\u4f20\u9012\u7ed9<a href=\"https:\/\/developer.mozilla.org\/en\/DOM\/window.URL.createObjectURL\">URL.createObjectURL()<\/a>\u65b9\u6cd5\uff0c\u5c31\u53ef\u4ee5\u62ff\u5230\u4e00\u4e2aobject URL\u3002\u800c\u8fd9\u4e2aobject URL\u5c31\u662f\u8fd9\u4e2aBlob\u5bf9\u8c61\u7684\u4e0b\u8f7d\u5730\u5740\u3002<br \/>\n\u62ff\u5230\u4e0b\u8f7d\u5730\u5740\u540e\uff0c\u521b\u5efa\u4e00\u4e2aa\u5143\u7d20\uff0c\u5c06\u4e0b\u8f7d\u5730\u5740\u8d4b\u503c\u7ed9href\u5c5e\u6027\uff0c\u6587\u4ef6\u540d\u8d4b\u503c\u7ed9download\u5c5e\u6027\uff08Chrome 14+\u652f\u6301\uff09\u3002<br \/>\n\u7136\u540e\u518d\u521b\u5efa\u4e00\u4e2aclick\u4e8b\u4ef6\uff0c\u4ea4\u7ed9\u8fd9\u4e2aa\u5143\u7d20\u5904\u7406\uff0c\u5c31\u4f1a\u5bfc\u81f4\u6d4f\u89c8\u5668\u5f00\u59cb\u4e0b\u8f7d\u8fd9\u4e2aBlob\u5bf9\u8c61\u4e86\u3002<br \/>\n\u6700\u540e\uff0c\u7528<a href=\"https:\/\/developer.mozilla.org\/en\/DOM\/window.URL.revokeObjectURL\">URL.revokeObjectURL()<\/a>\u6765\u91ca\u653e\u8fd9\u4e2aobject URL\uff0c\u901a\u77e5\u6d4f\u89c8\u5668\u53ef\u4ee5\u4e0d\u5fc5\u7ee7\u7eed\u5f15\u7528\u8fd9\u4e2a\u6587\u4ef6\u4e86\u3002<\/p>\n<p>\u4e0b\u9762\u5c31\u662f\u4e00\u6bb5\u5316\u7b80\u7684\u4ee3\u7801\uff1a<\/p>\n<pre class=\"brush:js;first-line:1;pad-line-numbers:true;highlight:null;collapse:false;\">var BlobBuilder = BlobBuilder || WebKitBlobBuilder || MozBlobBuilder;\r\nvar URL = URL || webkitURL || window;\r\n\r\nfunction saveAs(blob, filename) {\r\n    var type = blob.type;\r\n    var force_saveable_type = 'application\/octet-stream';\r\n    if (type &amp;&amp; type != force_saveable_type) { \/\/ \u5f3a\u5236\u4e0b\u8f7d\uff0c\u800c\u975e\u5728\u6d4f\u89c8\u5668\u4e2d\u6253\u5f00\r\n        var slice = blob.slice || blob.webkitSlice || blob.mozSlice;\r\n        blob = slice.call(blob, 0, blob.size, force_saveable_type);\r\n    }\r\n\r\n    var url = URL.createObjectURL(blob);\r\n    var save_link = document.createElementNS('http:\/\/www.w3.org\/1999\/xhtml', 'a');\r\n    save_link.href = url;\r\n    save_link.download = filename;\r\n\r\n    var event = document.createEvent('MouseEvents');\r\n    event.initMouseEvent('click', true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);\r\n    save_link.dispatchEvent(event);\r\n    URL.revokeObjectURL(url);\r\n}\r\n\r\nvar bb = new BlobBuilder;\r\nbb.append('Hello, world!');\r\nsaveAs(bb.getBlob('text\/plain;charset=utf-8'), 'hello world.txt');\r\n<\/pre>\n<p>\u6d4b\u8bd5\u65f6\u4f1a\u63d0\u793a\u4fdd\u5b58\u4e00\u4e2a\u6587\u672c\u6587\u4ef6\u3002Chrome\u9700\u8981\u628a\u7f51\u9875\u653e\u5728\u670d\u52a1\u5668\u4e0a\u6216\u63d2\u4ef6\u91cc\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>&#8212;&#8212;&#8212;&#8212;-\u534e\u4e3d\u7684\u5206\u5272\u7ebf&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;<\/p>\n<p>&nbsp;<\/p>\n<p>HTML5\u5b9a\u4e49\u4e86FileReader\u4f5c\u4e3a\u6587\u4ef6API\u7684\u91cd\u8981\u6210\u5458\u7528\u4e8e\u8bfb\u53d6\u6587\u4ef6\uff0c\u6839\u636eW3C\u7684\u5b9a\u4e49\uff0cFileReader\u63a5\u53e3\u63d0\u4f9b\u4e86\u8bfb\u53d6\u6587\u4ef6\u7684\u65b9\u6cd5\u548c\u5305\u542b\u8bfb\u53d6\u7ed3\u679c\u7684\u4e8b\u4ef6\u6a21\u578b\u3002<\/p>\n<p>FileReader\u7684\u4f7f\u7528\u65b9\u5f0f\u975e\u5e38\u7b80\u5355\uff0c\u53ef\u4ee5\u6309\u7167\u5982\u4e0b\u6b65\u9aa4\u521b\u5efaFileReader\u5bf9\u8c61\u5e76\u8c03\u7528\u5176\u65b9\u6cd5\uff1a<\/p>\n<p>1.\u68c0\u6d4b\u6d4f\u89c8\u5668\u5bf9FileReader\u7684\u652f\u6301<\/p>\n<div class=\"dp-highlighter bg_javascript\">\n<div class=\"bar\">\n<div class=\"tools\"><b>[javascript]<\/b> <a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/jackfrued\/article\/details\/8967667#\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\"><span class=\"tracking-ad\" data-mod=\"popu_168\"> <a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/jackfrued\/article\/details\/8967667#\" target=\"_blank\">copy<\/a><\/span><\/span><\/p>\n<div><embed id=\"ZeroClipboardMovie_1\" src=\"http:\/\/static.blog.csdn.net\/scripts\/ZeroClipboard\/ZeroClipboard.swf\" type=\"application\/x-shockwave-flash\" width=\"18\" height=\"18\" align=\"middle\" name=\"ZeroClipboardMovie_1\"\/><\/div>\n<\/div>\n<\/div>\n<ol class=\"dp-c\" start=\"1\">\n<li class=\"alt\"><span class=\"keyword\">if<\/span>(window.FileReader)\u00a0{<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">var<\/span>\u00a0fr\u00a0=\u00a0<span class=\"keyword\">new<\/span>\u00a0FileReader();<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/\u00a0add\u00a0your\u00a0code\u00a0here<\/span><\/li>\n<li class=\"\">}<\/li>\n<li class=\"alt\"><span class=\"keyword\">else<\/span>\u00a0{<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0alert(<span class=\"string\">&#8220;Not\u00a0supported\u00a0by\u00a0your\u00a0browser!&#8221;<\/span>);<\/li>\n<li class=\"alt\">}<\/li>\n<\/ol>\n<\/div>\n<p>&nbsp;<\/p>\n<p>2. \u8c03\u7528FileReader\u5bf9\u8c61\u7684\u65b9\u6cd5<\/p>\n<p>FileReader \u7684\u5b9e\u4f8b\u62e5\u6709 4 \u4e2a\u65b9\u6cd5\uff0c\u5176\u4e2d 3 \u4e2a\u7528\u4ee5\u8bfb\u53d6\u6587\u4ef6\uff0c\u53e6\u4e00\u4e2a\u7528\u6765\u4e2d\u65ad\u8bfb\u53d6\u3002\u4e0b\u9762\u7684\u8868\u683c\u5217\u51fa\u4e86\u8fd9\u4e9b\u65b9\u6cd5\u4ee5\u53ca\u4ed6\u4eec\u7684\u53c2\u6570\u548c\u529f\u80fd\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f \uff0c\u65e0\u8bba\u8bfb\u53d6\u6210\u529f\u6216\u5931\u8d25\uff0c\u65b9\u6cd5\u5e76\u4e0d\u4f1a\u8fd4\u56de\u8bfb\u53d6\u7ed3\u679c\uff0c\u8fd9\u4e00\u7ed3\u679c\u5b58\u50a8\u5728\u00a0<strong>result<\/strong>\u5c5e\u6027\u4e2d\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u65b9\u6cd5\u540d<\/th>\n<th>\u53c2\u6570<\/th>\n<th>\u63cf\u8ff0<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>abort<\/td>\n<td>none<\/td>\n<td>\u4e2d\u65ad\u8bfb\u53d6<\/td>\n<\/tr>\n<tr>\n<td>readAsBinaryString<\/td>\n<td>file<\/td>\n<td>\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u4e8c\u8fdb\u5236\u7801<\/td>\n<\/tr>\n<tr>\n<td>readAsDataURL<\/td>\n<td>file<\/td>\n<td>\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a DataURL<\/td>\n<\/tr>\n<tr>\n<td>readAsText<\/td>\n<td>file, [encoding]<\/td>\n<td>\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u6587\u672c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>readAsText\uff1a<\/strong>\u8be5\u65b9\u6cd5\u6709\u4e24\u4e2a\u53c2\u6570\uff0c\u5176\u4e2d\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u6587\u672c\u7684\u7f16\u7801\u65b9\u5f0f\uff0c\u9ed8\u8ba4\u503c\u4e3a UTF-8\u3002\u8fd9\u4e2a\u65b9\u6cd5\u975e\u5e38\u5bb9\u6613\u7406\u89e3\uff0c\u5c06\u6587\u4ef6\u4ee5\u6587\u672c\u65b9\u5f0f\u8bfb\u53d6\uff0c\u8bfb\u53d6\u7684\u7ed3\u679c\u5373\u662f\u8fd9\u4e2a\u6587\u672c\u6587\u4ef6\u4e2d\u7684\u5185\u5bb9\u3002<br \/>\n<strong>readAsBinaryString\uff1a<\/strong>\u8be5\u65b9\u6cd5\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u4e8c\u8fdb\u5236\u5b57\u7b26\u4e32\uff0c\u901a\u5e38\u6211\u4eec\u5c06\u5b83\u4f20\u9001\u5230\u540e\u7aef\uff0c\u540e\u7aef\u53ef\u4ee5\u901a\u8fc7\u8fd9\u6bb5\u5b57\u7b26\u4e32\u5b58\u50a8\u6587\u4ef6\u3002<br \/>\n<strong>readAsDataURL\uff1a<\/strong>\u8fd9\u662f\u4f8b\u5b50\u7a0b\u5e8f\u4e2d\u7528\u5230\u7684\u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u4e00\u6bb5\u4ee5 data: \u5f00\u5934\u7684\u5b57\u7b26\u4e32\uff0c\u8fd9\u6bb5\u5b57\u7b26\u4e32\u7684\u5b9e\u8d28\u5c31\u662f Data URL\uff0cData URL\u662f\u4e00\u79cd\u5c06\u5c0f\u6587\u4ef6\u76f4\u63a5\u5d4c\u5165\u6587\u6863\u7684\u65b9\u6848\u3002\u8fd9\u91cc\u7684\u5c0f\u6587\u4ef6\u901a\u5e38\u662f\u6307\u56fe\u50cf\u4e0e html \u7b49\u683c\u5f0f\u7684\u6587\u4ef6\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>3. \u5904\u7406\u4e8b\u4ef6<\/p>\n<p>FileReader \u5305\u542b\u4e86\u4e00\u5957\u5b8c\u6574\u7684\u4e8b\u4ef6\u6a21\u578b\uff0c\u7528\u4e8e\u6355\u83b7\u8bfb\u53d6\u6587\u4ef6\u65f6\u7684\u72b6\u6001\uff0c\u4e0b\u9762\u8fd9\u4e2a\u8868\u683c\u5f52\u7eb3\u4e86\u8fd9\u4e9b\u4e8b\u4ef6\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th class=\"w120\">\u4e8b\u4ef6<\/th>\n<th>\u63cf\u8ff0<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>onabort<\/td>\n<td>\u4e2d\u65ad\u65f6\u89e6\u53d1<\/td>\n<\/tr>\n<tr>\n<td>onerror<\/td>\n<td>\u51fa\u9519\u65f6\u89e6\u53d1<\/td>\n<\/tr>\n<tr>\n<td>onload<\/td>\n<td>\u6587\u4ef6\u8bfb\u53d6\u6210\u529f\u5b8c\u6210\u65f6\u89e6\u53d1<\/td>\n<\/tr>\n<tr>\n<td>onloadend<\/td>\n<td>\u8bfb\u53d6\u5b8c\u6210\u89e6\u53d1\uff0c\u65e0\u8bba\u6210\u529f\u6216\u5931\u8d25<\/td>\n<\/tr>\n<tr>\n<td>onloadstart<\/td>\n<td>\u8bfb\u53d6\u5f00\u59cb\u65f6\u89e6\u53d1<\/td>\n<\/tr>\n<tr>\n<td>onprogress<\/td>\n<td>\u8bfb\u53d6\u4e2d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6587\u4ef6\u4e00\u65e6\u5f00\u59cb\u8bfb\u53d6\uff0c\u65e0\u8bba\u6210\u529f\u6216\u5931\u8d25\uff0c\u5b9e\u4f8b\u7684 result \u5c5e\u6027\u90fd\u4f1a\u88ab\u586b\u5145\u3002\u5982\u679c\u8bfb\u53d6\u5931\u8d25\uff0c\u5219 result \u7684\u503c\u4e3a null \uff0c\u5426\u5219\u5373\u662f\u8bfb\u53d6\u7684\u7ed3\u679c\uff0c\u7edd\u5927\u591a\u6570\u7684\u7a0b\u5e8f\u90fd\u4f1a\u5728\u6210\u529f\u8bfb\u53d6\u6587\u4ef6\u7684\u65f6\u5019\uff0c\u6293\u53d6\u8fd9\u4e2a\u503c\u3002<\/p>\n<div class=\"dp-highlighter bg_javascript\">\n<div class=\"bar\">\n<div class=\"tools\"><b>[javascript]<\/b> <a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/jackfrued\/article\/details\/8967667#\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\"><span class=\"tracking-ad\" data-mod=\"popu_168\"> <a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/jackfrued\/article\/details\/8967667#\" target=\"_blank\">copy<\/a><\/span><\/span><\/p>\n<div><embed id=\"ZeroClipboardMovie_2\" src=\"http:\/\/static.blog.csdn.net\/scripts\/ZeroClipboard\/ZeroClipboard.swf\" type=\"application\/x-shockwave-flash\" width=\"18\" height=\"18\" align=\"middle\" name=\"ZeroClipboardMovie_2\"\/><\/div>\n<\/div>\n<\/div>\n<ol class=\"dp-c\" start=\"1\">\n<li class=\"alt\">fr.onload\u00a0=\u00a0<span class=\"keyword\">function<\/span>()\u00a0{<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">this<\/span>.result;<\/li>\n<li class=\"alt\">};<\/li>\n<\/ol>\n<\/div>\n<p>\u4e0b\u9762\u901a\u8fc7\u4e00\u4e2a\u4e0a\u4f20\u56fe\u7247\u9884\u89c8\u548c\u5e26\u8fdb\u5ea6\u6761\u4e0a\u4f20\u6765\u5c55\u793aFileReader\u7684\u4f7f\u7528\u3002<\/p>\n<div class=\"dp-highlighter bg_html\">\n<div class=\"bar\">\n<div class=\"tools\"><b>[html]<\/b> <a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/jackfrued\/article\/details\/8967667#\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\"><span class=\"tracking-ad\" data-mod=\"popu_168\"> <a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/jackfrued\/article\/details\/8967667#\" target=\"_blank\">copy<\/a><\/span><\/span><\/p>\n<div><embed id=\"ZeroClipboardMovie_3\" src=\"http:\/\/static.blog.csdn.net\/scripts\/ZeroClipboard\/ZeroClipboard.swf\" type=\"application\/x-shockwave-flash\" width=\"18\" height=\"18\" align=\"middle\" name=\"ZeroClipboardMovie_3\"\/><\/div>\n<\/div>\n<\/div>\n<ol class=\"dp-xml\" start=\"1\">\n<li class=\"alt\"><span class=\"tag\">&lt;<\/span><span class=\"tag-name\">script<\/span>\u00a0<span class=\"attribute\">type<\/span>=<span class=\"attribute-value\">&#8220;text\/javascript&#8221;<\/span><span class=\"tag\">&gt;<\/span><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0function\u00a0showPreview(source)\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0var\u00a0<span class=\"attribute\">file<\/span>\u00a0=\u00a0<span class=\"attribute-value\">source<\/span>.files[0];<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(window.FileReader)\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0var\u00a0<span class=\"attribute\">fr<\/span>\u00a0=\u00a0<span class=\"attribute-value\">new<\/span>\u00a0FileReader();<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"attribute\">fr.onloadend<\/span>\u00a0=\u00a0<span class=\"attribute-value\">function<\/span>(e)\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0document.getElementById(&#8220;portrait&#8221;)<span class=\"attribute\">.src<\/span>\u00a0=\u00a0<span class=\"attribute-value\">e<\/span>.target.result;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0};<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0fr.readAsDataURL(file);<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0<span class=\"tag\">&lt;\/<\/span><span class=\"tag-name\">script<\/span><span class=\"tag\">&gt;<\/span><\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\"><span class=\"tag\">&lt;<\/span><span class=\"tag-name\">input<\/span>\u00a0<span class=\"attribute\">type<\/span>=<span class=\"attribute-value\">&#8220;file&#8221;<\/span>\u00a0<span class=\"attribute\">name<\/span>=<span class=\"attribute-value\">&#8220;file&#8221;<\/span>\u00a0<span class=\"attribute\">onchange<\/span>=<span class=\"attribute-value\">&#8220;showPreview(this)&#8221;<\/span>\u00a0<span class=\"tag\">\/&gt;<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"tag\">&lt;<\/span><span class=\"tag-name\">img<\/span>\u00a0<span class=\"attribute\">id<\/span>=<span class=\"attribute-value\">&#8220;portrait&#8221;<\/span>\u00a0<span class=\"attribute\">src<\/span>=<span class=\"attribute-value\">&#8220;&#8221;<\/span>\u00a0<span class=\"attribute\">width<\/span>=<span class=\"attribute-value\">&#8220;70&#8221;<\/span>\u00a0<span class=\"attribute\">height<\/span>=<span class=\"attribute-value\">&#8220;75&#8221;<\/span><span class=\"tag\">&gt;<\/span><\/li>\n<\/ol>\n<\/div>\n<p>&nbsp;<\/p>\n<p>\u5982\u679c\u8981\u9650\u5b9a\u4e0a\u4f20\u6587\u4ef6\u7684\u7c7b\u578b\uff0c\u53ef\u4ee5\u901a\u8fc7\u6587\u4ef6\u9009\u62e9\u5668\u83b7\u53d6\u6587\u4ef6\u5bf9\u8c61\u5e76\u901a\u8fc7type\u5c5e\u6027\u6765\u68c0\u67e5\u6587\u4ef6\u7c7b\u578b<\/p>\n<div class=\"dp-highlighter bg_javascript\">\n<div class=\"bar\">\n<div class=\"tools\"><b>[javascript]<\/b> <a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/jackfrued\/article\/details\/8967667#\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\"><span class=\"tracking-ad\" data-mod=\"popu_168\"> <a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/jackfrued\/article\/details\/8967667#\" target=\"_blank\">copy<\/a><\/span><\/span><\/p>\n<div><embed id=\"ZeroClipboardMovie_4\" src=\"http:\/\/static.blog.csdn.net\/scripts\/ZeroClipboard\/ZeroClipboard.swf\" type=\"application\/x-shockwave-flash\" width=\"18\" height=\"18\" align=\"middle\" name=\"ZeroClipboardMovie_4\"\/><\/div>\n<\/div>\n<\/div>\n<ol class=\"dp-c\" start=\"1\">\n<li class=\"alt\"><span class=\"keyword\">if<\/span>(!\/image\\\/\\w+\/.test(file.type)){<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0alert(<span class=\"string\">&#8220;\u8bf7\u786e\u4fdd\u6587\u4ef6\u4e3a\u56fe\u50cf\u7c7b\u578b&#8221;<\/span>);<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">return<\/span>\u00a0<span class=\"keyword\">false<\/span>;<\/li>\n<li class=\"\">}<\/li>\n<\/ol>\n<\/div>\n<p>\u4e0d\u96be\u53d1\u73b0\u8fd9\u4e2a\u68c0\u6d4b\u662f\u57fa\u4e8e\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\uff0c\u56e0\u6b64\u53ef\u4ee5\u8fdb\u884c\u5404\u79cd\u590d\u6742\u7684\u5339\u914d\uff0c\u975e\u5e38\u6709\u7528\u3002<\/p>\n<p>\u5982\u679c\u8981\u589e\u52a0\u4e00\u4e2a\u8fdb\u5ea6\u6761\uff0c\u53ef\u4ee5\u4f7f\u7528HTML 5\u7684progress\u6807\u7b7e\uff0c\u901a\u8fc7\u4e0b\u9762\u7684\u4ee3\u7801\u5b9e\u73b0\u3002<\/p>\n<div class=\"dp-highlighter bg_html\">\n<div class=\"bar\">\n<div class=\"tools\"><b>[html]<\/b> <a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/jackfrued\/article\/details\/8967667#\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\"><span class=\"tracking-ad\" data-mod=\"popu_168\"> <a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/jackfrued\/article\/details\/8967667#\" target=\"_blank\">copy<\/a><\/span><\/span><\/p>\n<div><embed id=\"ZeroClipboardMovie_5\" src=\"http:\/\/static.blog.csdn.net\/scripts\/ZeroClipboard\/ZeroClipboard.swf\" type=\"application\/x-shockwave-flash\" width=\"18\" height=\"18\" align=\"middle\" name=\"ZeroClipboardMovie_5\"\/><\/div>\n<\/div>\n<\/div>\n<ol class=\"dp-xml\" start=\"1\">\n<li class=\"alt\"><span class=\"tag\">&lt;<\/span><span class=\"tag-name\">form<\/span><span class=\"tag\">&gt;<\/span><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0<span class=\"tag\">&lt;<\/span><span class=\"tag-name\">fieldset<\/span><span class=\"tag\">&gt;<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"tag\">&lt;<\/span><span class=\"tag-name\">legend<\/span><span class=\"tag\">&gt;<\/span>\u5206\u5ea6\u8bfb\u53d6\u6587\u4ef6\uff1a<span class=\"tag\">&lt;\/<\/span><span class=\"tag-name\">legend<\/span><span class=\"tag\">&gt;<\/span><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"tag\">&lt;<\/span><span class=\"tag-name\">input<\/span>\u00a0<span class=\"attribute\">type<\/span>=<span class=\"attribute-value\">&#8220;file&#8221;<\/span>\u00a0<span class=\"attribute\">id<\/span>=<span class=\"attribute-value\">&#8220;File&#8221;<\/span>\u00a0<span class=\"tag\">\/&gt;<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"tag\">&lt;<\/span><span class=\"tag-name\">input<\/span>\u00a0<span class=\"attribute\">type<\/span>=<span class=\"attribute-value\">&#8220;button&#8221;<\/span>\u00a0<span class=\"attribute\">value<\/span>=<span class=\"attribute-value\">&#8220;\u4e2d\u65ad&#8221;<\/span>\u00a0<span class=\"attribute\">id<\/span>=<span class=\"attribute-value\">&#8220;Abort&#8221;<\/span>\u00a0<span class=\"tag\">\/&gt;<\/span><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"tag\">&lt;<\/span><span class=\"tag-name\">p<\/span><span class=\"tag\">&gt;<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"tag\">&lt;<\/span><span class=\"tag-name\">label<\/span><span class=\"tag\">&gt;<\/span>\u8bfb\u53d6\u8fdb\u5ea6\uff1a<span class=\"tag\">&lt;\/<\/span><span class=\"tag-name\">label<\/span><span class=\"tag\">&gt;<\/span><span class=\"tag\">&lt;<\/span><span class=\"tag-name\">progress<\/span>\u00a0<span class=\"attribute\">id<\/span>=<span class=\"attribute-value\">&#8220;Progress&#8221;<\/span>\u00a0<span class=\"attribute\">value<\/span>=<span class=\"attribute-value\">&#8220;0&#8221;<\/span>\u00a0<span class=\"attribute\">max<\/span>=<span class=\"attribute-value\">&#8220;100&#8221;<\/span><span class=\"tag\">&gt;<\/span><span class=\"tag\">&lt;\/<\/span><span class=\"tag-name\">progress<\/span><span class=\"tag\">&gt;<\/span><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"tag\">&lt;\/<\/span><span class=\"tag-name\">p<\/span><span class=\"tag\">&gt;<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"tag\">&lt;<\/span><span class=\"tag-name\">p<\/span>\u00a0<span class=\"attribute\">id<\/span>=<span class=\"attribute-value\">&#8220;Status&#8221;<\/span><span class=\"tag\">&gt;<\/span><span class=\"tag\">&lt;\/<\/span><span class=\"tag-name\">p<\/span><span class=\"tag\">&gt;<\/span><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0<span class=\"tag\">&lt;\/<\/span><span class=\"tag-name\">fieldset<\/span><span class=\"tag\">&gt;<\/span><\/li>\n<li class=\"alt\"><span class=\"tag\">&lt;\/<\/span><span class=\"tag-name\">form<\/span><span class=\"tag\">&gt;<\/span><\/li>\n<\/ol>\n<\/div>\n<p>&nbsp;<\/p>\n<div class=\"dp-highlighter bg_javascript\">\n<div class=\"bar\">\n<div class=\"tools\"><b>[javascript]<\/b> <a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/jackfrued\/article\/details\/8967667#\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\"><span class=\"tracking-ad\" data-mod=\"popu_168\"> <a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/jackfrued\/article\/details\/8967667#\" target=\"_blank\">copy<\/a><\/span><\/span><\/p>\n<div><embed id=\"ZeroClipboardMovie_6\" src=\"http:\/\/static.blog.csdn.net\/scripts\/ZeroClipboard\/ZeroClipboard.swf\" type=\"application\/x-shockwave-flash\" width=\"18\" height=\"18\" align=\"middle\" name=\"ZeroClipboardMovie_6\"\/><\/div>\n<\/div>\n<\/div>\n<ol class=\"dp-c\" start=\"1\">\n<li class=\"alt\"><span class=\"keyword\">var<\/span>\u00a0h\u00a0=\u00a0{<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0init:\u00a0<span class=\"keyword\">function<\/span>()\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">var<\/span>\u00a0me\u00a0=\u00a0<span class=\"keyword\">this<\/span>;<\/li>\n<li class=\"\"><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0document.getElementById(<span class=\"string\">&#8216;File&#8217;<\/span>).onchange\u00a0=\u00a0me.fileHandler;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0document.getElementById(<span class=\"string\">&#8216;Abort&#8217;<\/span>).onclick\u00a0=\u00a0me.abortHandler;<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0me.status\u00a0=\u00a0document.getElementById(<span class=\"string\">&#8216;Status&#8217;<\/span>);<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0me.progress\u00a0=\u00a0document.getElementById(<span class=\"string\">&#8216;Progress&#8217;<\/span>);<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0me.percent\u00a0=\u00a0document.getElementById(<span class=\"string\">&#8216;Percent&#8217;<\/span>);<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0me.loaded\u00a0=\u00a00;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/\u6bcf\u6b21\u8bfb\u53d61M<\/span><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0me.step\u00a0=\u00a01024\u00a0*\u00a01024;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0me.times\u00a0=\u00a00;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0},<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0fileHandler:\u00a0<span class=\"keyword\">function<\/span>(e)\u00a0{<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">var<\/span>\u00a0me\u00a0=\u00a0h;<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">var<\/span>\u00a0file\u00a0=\u00a0me.file\u00a0=\u00a0<span class=\"keyword\">this<\/span>.files[0];<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">var<\/span>\u00a0reader\u00a0=\u00a0me.reader\u00a0=\u00a0<span class=\"keyword\">new<\/span>\u00a0FileReader();<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0me.total\u00a0=\u00a0file.size;<\/li>\n<li class=\"\"><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0reader.onloadstart\u00a0=\u00a0me.onLoadStart;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0reader.onprogress\u00a0=\u00a0me.onProgress;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0reader.onabort\u00a0=\u00a0me.onAbort;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0reader.onerror\u00a0=\u00a0me.onerror;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0reader.onload\u00a0=\u00a0me.onLoad;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0reader.onloadend\u00a0=\u00a0me.onLoadEnd;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/\u8bfb\u53d6\u7b2c\u4e00\u5757<\/span><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0me.readBlob(file,\u00a00);<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0},<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0onLoadStart:\u00a0<span class=\"keyword\">function<\/span>()\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">var<\/span>\u00a0me\u00a0=\u00a0h;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0},<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0onProgress:\u00a0<span class=\"keyword\">function<\/span>(e)\u00a0{<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">var<\/span>\u00a0me\u00a0=\u00a0h;<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0me.loaded\u00a0+=\u00a0e.loaded;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/\u66f4\u65b0\u8fdb\u5ea6\u6761<\/span><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0me.progress.value\u00a0=\u00a0(me.loaded\u00a0\/\u00a0me.total)\u00a0*\u00a0100;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0},<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0onAbort:\u00a0<span class=\"keyword\">function<\/span>()\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">var<\/span>\u00a0me\u00a0=\u00a0h;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0},<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0onError:\u00a0<span class=\"keyword\">function<\/span>()\u00a0{<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">var<\/span>\u00a0me\u00a0=\u00a0h;<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0},<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0onLoad:\u00a0<span class=\"keyword\">function<\/span>()\u00a0{<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">var<\/span>\u00a0me\u00a0=\u00a0h;<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if<\/span>(me.loaded\u00a0&lt;\u00a0me.total)\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0me.readBlob(me.loaded);<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0<span class=\"keyword\">else<\/span>\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0me.loaded\u00a0=\u00a0me.total;<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0},<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0onLoadEnd:\u00a0<span class=\"keyword\">function<\/span>()\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">var<\/span>\u00a0me\u00a0=\u00a0h;<\/li>\n<li class=\"\"><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0},<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0readBlob:\u00a0<span class=\"keyword\">function<\/span>(start)\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">var<\/span>\u00a0me\u00a0=\u00a0h;<\/li>\n<li class=\"\"><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">var<\/span>\u00a0blob,<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0file\u00a0=\u00a0me.file;<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0me.times\u00a0+=\u00a01;<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if<\/span>(file.webkitSlice)\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0blob\u00a0=\u00a0file.webkitSlice(start,\u00a0start\u00a0+\u00a0me.step\u00a0+\u00a01);<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0<span class=\"keyword\">else<\/span>\u00a0<span class=\"keyword\">if<\/span>(file.mozSlice)\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0blob\u00a0=\u00a0file.mozSlice(start,\u00a0start\u00a0+\u00a0me.step\u00a0+\u00a01);<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n<li class=\"alt\"><\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0me.reader.readAsText(blob);<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0},<\/li>\n<li class=\"\">\u00a0\u00a0\u00a0\u00a0abortHandler:\u00a0<span class=\"keyword\">function<\/span>()\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">var<\/span>\u00a0me\u00a0=\u00a0h;<\/li>\n<li class=\"\"><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if<\/span>(me.reader)\u00a0{<\/li>\n<li 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