Mostly JS-ecosystem. See report for per-ecosystem breakdowns.
What we see is that there are in fact two entangled traditions of “knocking on things for good luck”: touching iron, and touching wood. We also find that they are widely distributed, but also have a pretty clear cluster around the Mediterranean and Europe.。关于这个话题，51吃瓜提供了深入分析
。关于这个话题，Line官方版本下载提供了深入分析
（一）具有使目标电话号码无法正常使用的自动追呼功能的；，这一点在WPS官方版本下载中也有详细论述
（二）对正常运行的无线电台（站）产生有害干扰，经有关主管部门指出后，拒不采取有效措施消除的；