Performance problems when loading local JSON via <script> elements in IE8

Posted by Jens Bannmann on Stack Overflow See other posts from Stack Overflow or by Jens Bannmann
Published on 2010-06-15T08:11:49Z Indexed on 2010/06/15 8:32 UTC
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Filed under:

JavaScript

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JSON

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file

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local

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ie8

I have a web page with some JS scripts that needs to work locally, e.g. from hard disk or a CD-ROM. The scripts load JSON data from files by inserting <script> tags. This worked fine in IE6, but now in IE8 it takes an enormous amount of time: it went from "instantly" to 3-10 seconds. The main data file is 45KB large.

How can I solve this? I would switch from <script> tags to another method of loading JSON (ideally involving the new native JSON parser), but it seems locally loaded content cannot access the XMLHttpRequest object. Any ideas?

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