How to convert blob url into blob source code in jquery.

 Convert blob url into blob source code in jQuery

jQuery('.save_video_rec').click(function(){
        

        // blob url

        var videoblob = $('.j-video_result').attr('src');
        var blobUrl = videoblob;
        alert(blobUrl);
        var xhr = new XMLHttpRequest;
        xhr.responseType = 'blob';

        xhr.onl oad = function() {
        var recoveredBlob = xhr.response;

        var reader = new FileReader;

        reader.onl oad = function() {
         var blobAsDataUrl = reader.result;
        //  window.location = blobAsDataUrl;
        //    $('.audiovalue').val(blobAsDataUrl);
            alert(blobAsDataUrl);
        };

        reader.readAsDataURL(recoveredBlob);
        };

        xhr.open('GET', blobUrl);
        xhr.send();
        
    });