QQ空间算法 【求解】

getToken: (function () { var tmpSkey = null, tmpToken = null; return function(){ var skey = cookie('p_skey') || cookie('skey') || '', hash = 5381, token = tmpToken; if (skey) { //鍙湁缂撳瓨涓殑skey澶辨晥鏃舵墠閲嶆柊鐢熸垚gtoken if(skey !== tmpSkey){ tmpSkey = skey; var i = 0, l = skey.length; for (; i < l; ++i) { hash += (hash << 5) + skey.charAt(i).charCodeAt(); } tmpToken = token = hash & 0x7fffffff; }