您不能编辑浏览器内置的上下文菜单，但您可以禁用它，并使用 oncontextmenu 用自己的替换code>事件窗口对象。我要提醒，这往往是一个坏主意。用户希望找到内置上下文菜单，并经常感到沮丧时，它不存在。

You cannot edit the browser's built-in context menu, but you can disable it and replace it with your own using the oncontextmenu event on the window object. I would caution that this is often a bad idea. Users expect to find the built-in context menu and are often frustrated when it isn't there.