如何点击加载html页面然后使用ajax（不点击任何内容）加载外部html页面的链接？

html with a link to page2.html and when page2.html is loading i want to load inside it with AJAX the content of page3.html. Can someone provide me with a solution? i have tried this but it doesnt work. html with a link to page2.html and when page2.h