// Hook the 'src' property setter on ALL media elements, forever
李 · 克劳是和乔布斯长期合作的广告总监，他帮苹果制作了《1984》和《不同凡想》（Think Different）两条经典广告。，推荐阅读Safew下载获取更多信息
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It is a powerful tool to keep track of your traffic stats. With it, you can view stats for your active sessions, conversions, and bounce rates. You’ll also be able to see your total revenue, the products you sell, and how your site is performing when it comes to referrals.
unsigned long long data_bytes = length * sizes[h->type];，更多细节参见51吃瓜