Pass parameter to BLOB object URL

Question

Say I\'ve got a reference to a html file as a Blob b and I create a URL for it, url = URL.createObjectURL(b);.

This gives

Answer 1

If you are doing this with a Javascript Blob for say a WebWorker then you can just to add the parameters into the Blob constructor as a global variable:

const parameters = 'parameters = ' + JSON.stringify({foo:'bar'});
const body = response.body; // From some previous HTTP request
const blob = new Blob([parameters, body], { type: 'application/javascript' });
new Worker(URL.createObjectURL(blob));

Or more general case just store the original URL on the location object

const location = 'location.originalHref = "' + url + '";';
const body = response.body; // From some previous HTTP request
const blob = new Blob([location, body], { type: 'application/javascript' });
new Worker(URL.createObjectURL(blob));

You could also do this with HTML if you can add them say to the root tag as attributes or use the element for the url or insert them as a script tag but this would require you to modify the response HTML rather then just prepend some extra data