As we know, we can use the function `file_get_contents(url)` in PHP to get content of a url.
However, can it be avaible in JavaScript?
The `document.ElementById()` is only valid in current page.
Can I use JS to get a div or class in an URL?
Moreover, if these content can be displayed through PopupBubble, I will be more grateful to you.
You can make an HTTP request using XMLHttpRequest subject to the Same Origin Policy which can be bypassed using CORS