Cross-origin solution for loading WebWorker

web-worker-cors.js

var xhr = new XMLHttpRequest();
xhr.open('GET', url);
xhr.onload = function() {
    if (xhr.status === 200) {
        var workerSrcBlob, workerBlobURL;
        
            workerSrcBlob = new Blob([xhr.responseText], { type: 'text/javascript' });
            workerBlobURL = window.URL.createObjectURL(workerSrcBlob);
            
            var worker = new Worker(workerBlobURL);

    }
};
xhr.send();

i think your webworker only process data response from ajax, not execute call ajax in background.