The nsIDOMFile interface retrieves data from a file submitted to a form using the input type "file". This allows the file reference to be saved when the form is submitted while the user is using a web application offline, so that the data can be retrieved and uploaded once the Internet connection is restored.
Source: Firefox 3 and input type=file , upload file
1 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 3 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 4 5 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> 6 <head> 7 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 8 <title>input type=file & Firefox 3</title> 9 </head> 10 11 <body> 12 13 <h1>input type=file & Firefox 3</h1> 14 15 <script type="text/javascript"> 16 // <![CDATA[ 17 18 function inputFileOnChange() { 19 var v_console = ''; 20 v_console += 'value: ' + document.getElementById('my-file').value; 21 v_console += '<br \/>'; 22 23 if(document.getElementById('my-file').files) { 24 // Support: nsIDOMFile, nsIDOMFileList 25 v_console += 'files.length: ' + document.getElementById('my-file').files.length; 26 v_console += '<br \/>'; 27 28 v_console += 'fileName: ' + document.getElementById('my-file').files.item(0).fileName; 29 v_console += '<br \/>'; 30 31 v_console += 'fileSize: ' + document.getElementById('my-file').files.item(0).fileSize; 32 v_console += '<br \/>'; 33 34 v_console += 'data: ' + document.getElementById('my-file').files.item(0).getAsDataURL(); 35 // v_console += 'data: ' + document.getElementById('my-file').files.item(0).getAsBinary(); 36 // v_console += 'data: ' + document.getElementById('my-file').files.item(0).getAsText(); 37 v_console += '<br \/>'; 38 }; 39 40 document.getElementById('console').innerHTML = v_console; 41 }; 42 43 // ]]> 44 </script> 45 46 <div> 47 <input type="file" name="my-file" id="my-file" onchange="inputFileOnChange();" /> 48 <br /><br /> 49 <code id="console">...console...< /code> 50 </div> 51 52 </body> 53 </html>
Source: Firefox 3 and input type=file , upload file
