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Philip M · 10-12-2012, 07:43 AM

Are you sure that you are posting in the correct forum, Javascript (not Java)?

JavaScript running in a browser is a client-side language. JavaScript does not have any commands for reading or writing files. Modern browsers can read files on the server using an Ajax call, but otherwise JavaScript has no capability to read from, write to, modify or delete a file (except a cookie), communicate with the server, access a database, the client's operating system or the Windows registry, or alter the default behaviour of the browser. And for security reasons JavaScript cannot access anything beyond the domain of the current page. This is known as the "same origin policy" and prevents a document or script loaded from one origin from getting or setting properties of a document from a different origin.

Internet Explorer's JScript (only) lets you write to the Windows local file system by means of the harmless execCommand() function. It is possible in IE in certain circumstances to use ActiveX objects to access the directory and read files. This is not recommended for a variety of reasons.

All advice is supplied packaged by intellectual weight, and not by volume. Contents may settle slightly in transit.

10-12-2012, 07:43 AM	PM User \| #2
Philip M Supreme Master coder! Join Date: Jun 2002 Location: London, England Posts: 17,036 Thanks: 197 Thanked 2,411 Times in 2,389 Posts	Are you sure that you are posting in the correct forum, Javascript (not Java)? JavaScript running in a browser is a client-side language. JavaScript does not have any commands for reading or writing files. Modern browsers can read files on the server using an Ajax call, but otherwise JavaScript has no capability to read from, write to, modify or delete a file (except a cookie), communicate with the server, access a database, the client's operating system or the Windows registry, or alter the default behaviour of the browser. And for security reasons JavaScript cannot access anything beyond the domain of the current page. This is known as the "same origin policy" and prevents a document or script loaded from one origin from getting or setting properties of a document from a different origin. Internet Explorer's JScript (only) lets you write to the Windows local file system by means of the harmless execCommand() function. It is possible in IE in certain circumstances to use ActiveX objects to access the directory and read files. This is not recommended for a variety of reasons. All advice is supplied packaged by intellectual weight, and not by volume. Contents may settle slightly in transit. __________________ All the code given in this post has been tested and is intended to address the question asked. Unless stated otherwise it is not just a demonstration.