XMLHttpRequest Origin null is not allowed Access-Control-Allow-Origin for file:/// to file:/// (Serverless)

Question

I\'m trying to create a website that can be downloaded and run locally by launching its index file.

All the files are local, no resources are used online.

Wh

Answer 1

The way I just worked around this is not to use XMLHTTPRequest at all, but include the data needed in a separate javascript file instead. (In my case I needed a binary SQLite blob to use with https://github.com/kripken/sql.js/)

I created a file called base64_data.js (and used btoa() to convert the data that I needed and insert it into a

so I could copy it).

var base64_data = "U1FMaXRlIGZvcm1hdCAzAAQA ... AhEHwA==";

and then included the data in the html like normal javascript:

I imagine it would be trivial to modify this to read JSON, maybe even XML; I'll leave that as an exercise for the reader ;)

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