如何触发其他网站的按钮

Question

I have a I frame and inside the iframe is another website. I want to trigger the button of login to my external button

Answer 1

If it's from another site/domain, you can't do it, it has to be on the same domain. To access elements within the iframe on the same domain you could use the frames property of the window object

let iframeBtn = window.frames['yourIFrame'].document.getElementById('buttonId');

//code to trigger the button inside the iframe