f12打开控制台，输入以下内容：

function setCookie(cookieName, value, expiresTime, path) {
    expiresTime = expiresTime || "Thu, 01-Jan-2030 00:00:01 GMT";
    path = path || "/";
    document.cookie = "CURRENT_QUALITY" + "=" + encodeURIComponent(80) + "; expires=" + expiresTime + "; path=" + path;
}
setCookie("CURRENT_QUALITY", 80);