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August 29, 2021 14:40
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Local file-chooser dialog in HTML and JavaScript. This app opens a text file on the local computer and displays the file text in the JavaScript console.
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| function readFile (file) { | |
| var url = window.URL.createObjectURL (file); | |
| var reader = new FileReader (); | |
| reader.onload = function (e) { | |
| var filetext = reader.result; | |
| console.log (filetext); | |
| } | |
| reader.readAsText (file); | |
| } | |
| function openDialogCommand (fileTypes) { | |
| var theDialog = $("<input type=\"file\" accept=\"" + fileTypes + "\" style=\"display: none;\">"); | |
| $(theDialog).change (function (event) { | |
| if (this.files.length > 0) { | |
| readFile (this.files [0]); | |
| } | |
| }); | |
| $("body").append (theDialog); | |
| $(theDialog).trigger ("click"); | |
| } | |
| function openTextFile () { | |
| openDialogCommand (".html,.txt,.xml,.json,.opml") | |
| } |
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| <html> | |
| <head> | |
| <title>Open File Dialog</title> | |
| <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <script src="//s3.amazonaws.com/scripting.com/code/includes/jquery-1.9.1.min.js"></script> | |
| <link href="//s3.amazonaws.com/scripting.com/code/includes/bootstrap.css" rel="stylesheet"> | |
| <script src="//s3.amazonaws.com/scripting.com/code/includes/bootstrap.min.js"></script> | |
| <script src="code.js"></script> | |
| <style> | |
| body { | |
| font-family: Ubuntu; | |
| font-size: 18px; | |
| background-color: whitesmoke; | |
| } | |
| .divPageBody { | |
| width: 60%; | |
| margin-top: 50px; | |
| margin-left: auto; | |
| margin-right: auto; | |
| margin-bottom: 400px; | |
| } | |
| p { | |
| margin-top: 25px; | |
| line-height: 140%; | |
| } | |
| a { | |
| cursor: pointer; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div class="divPageBody"> | |
| <h1>Open File Dialog</h1> | |
| <p><a onclick="openTextFile ()">Click here to choose a file</a>.</p> | |
| </div> | |
| </body> | |
| </html> |
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