我可以在JavaScript中更改事件队列优先级吗？

I need a distinct sound to play when a error occurs. The error is the result of a problem with one of perhaps two hundred barcodes that are being inputted in rapid fire. The event queue seems to handle keyboard input (which the barcode scanner emulates) first, and playing of my sound second. So if the barcodes are scanned quickly, the error sound stays in the queue, being bumped by the next scan.I need a distinct sound to play when a error oc