Javascript Input type

In javascript we use input type = file .. to open up a file browser pop-up .. is there a way to limit access to folders .. I want to select a fold开发者_如何学Cer then ftp all the files in the folder .. so i need access upto only the folder level and not file level .. i guess it would be tedious to go an manually select every file from the folder and then ftp .. is there a way to do that.. Also, how can i set the file-browser pop-up window path to a default one ?

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You need to take advantage of Flash or similar to enabled extended file upload options.

e.g. SWFUpload will allow you to filter out:

• file types: *.gif, *.doc, *.zip etc.
• file size: max etc.
• multiple files

etc.

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You can not do that in standard JavaScript - it's a functionality that is browser dependent.

It may be exposed via Flash or some other custom browser plugin.