Created
November 30, 2013 07:55
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| <!DOCTYPE HTML> | |
| <html> | |
| <head> | |
| <meta http-equiv="Content-type" content="text/html;charset=UTF-8"> | |
| <title>Show File Data</title> | |
| <style type='text/css'> | |
| body { | |
| font-family: sans-serif; | |
| } | |
| </style> | |
| <script type='text/javascript'> | |
| function loadFile() { | |
| var input, file, fr; | |
| if (typeof window.FileReader !== 'function') { | |
| bodyAppend("p", "The file API isn't supported on this browser yet."); | |
| return; | |
| } | |
| input = document.getElementById('fileinput'); | |
| if (!input) { | |
| bodyAppend("p", "Um, couldn't find the fileinput element."); | |
| } | |
| else if (!input.files) { | |
| bodyAppend("p", "This browser doesn't seem to support the `files` property of file inputs."); | |
| } | |
| else if (!input.files[0]) { | |
| bodyAppend("p", "Please select a file before clicking 'Load'"); | |
| } | |
| else { | |
| file = input.files[0]; | |
| fr = new FileReader(); | |
| fr.onload = receivedText; | |
| fr.readAsText(file); | |
| } | |
| function receivedText() { | |
| showResult(fr, "Text"); | |
| fr = new FileReader(); | |
| fr.onload = receivedBinary; | |
| fr.readAsBinaryString(file); | |
| } | |
| function receivedBinary() { | |
| showResult(fr, "Binary"); | |
| } | |
| } | |
| function showResult(fr, label) { | |
| var markup, result, n, aByte, byteStr; | |
| markup = []; | |
| result = fr.result; | |
| for (n = 0; n < result.length; ++n) { | |
| aByte = result.charCodeAt(n); | |
| byteStr = aByte.toString(16); | |
| if (byteStr.length < 2) { | |
| byteStr = "0" + byteStr; | |
| } | |
| markup.push(byteStr); | |
| } | |
| bodyAppend("p", label + " (" + result.length + "):"); | |
| bodyAppend("pre", markup.join(" ")); | |
| } | |
| function bodyAppend(tagName, innerHTML) { | |
| var elm; | |
| elm = document.createElement(tagName); | |
| elm.innerHTML = innerHTML; | |
| document.body.appendChild(elm); | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| <form action='#' onsubmit="return false;"> | |
| <input type='file' id='fileinput'> | |
| <input type='button' id='btnLoad' value='Load' onclick='loadFile();'> | |
| </form> | |
| </body> | |
| </html> |
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