javascript:document.οncοntextmenu='return true';document.onselectstart='return true';document.body.onselectstart='return true';document.body.οnselect='return true';document.body.οncοpy='return true';document.body.onbeforecopy='return true';document.body.οncοntextmenu='return true';document.body.οnmοuseup='return true';void 0;

reference：https://blog.csdn.net/Chameleons1/article/details/103091563