Ho costruito una pagina html per l'upload di file mooolto pesanti.
Ora vorrei che durante la fase di upload se l'utente cerca di uscire dalla pagina venga visualizzato un messaggio di allerta con i due pulsanti rimani nella pagina o esci.
Questa è la mia pagina:
codice:<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>FileUploader2</title> <script type="text/javascript" src="./swfobject.js"></script> </head> <body> <div style="width:500px;margin:150px auto;"> <div id="uploader"> <script type="text/javascript"> /** CONFIG SETTINGS FOR THE FILE UPLOADER **/ var flashvars = { /** * the url of the upload target file which processes the file uploads */ uploadUrl : 'upload.php', /** * the maximum file size that can be upload in Bytes */ maxFileSize : (20 * 1024 * 1024), // 20mb /** * the maximum size of a single post request in Bytes that can be uploaded * As the BigFileUpload transfers big files with several requests, * this setting specifies the maximum size of one of these requests. */ maxPostSize : (2 * 1024 * 1024) // 2mb /** * a comma seperated list of file endings that are allowed to be uploaded */ //fileFilter : 'jpg,jpeg,png,gif' /** * The maximum number of files that can be added to the upload list */ //maxFiles : 20 }; swfobject.embedSWF("FileUploaderStandalone.swf", "uploader", "500", "350", "10.0.0", "", flashvars); </script> <noscript><div class="swfNoScript" style="width:400px;height:400px"></div></noscript> </div> </div> </body> </html>
Come si fa?
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