how to insert js to iframe page in order to disabled open new page/window
js 禁用 iframe 中的页面打开新页面
https://stackoverflow.com/questions/29188009/how-to-prevent-links-in-iframe-from-opening-in-new-tab#
demo
https://codepen.io/webgeeker/pen/bzdbmK
https://codepen.io/webgeeker/pen/mvJbzM