<?phpheader("content-type:text/html;charset=utf-8");$redis = new redis();$result = $redis->connect('127.0.0.1', 7379);$redis->watch("mywatchlist");$len = $redis->hlen("mywatchlist");$rob_total = 100; //抢购数量if ($len < $rob_total) {

纯后端渲染，不用ajax

直接删属性？removeAttr("src");