如何获取焦点文本框的 id？

Question

I am creating a Chrome extension and I need to get the id of the selected textbox on the page. I am using Javascript and jQuery

Answer 1

You can use the :focus pseudo-class selector. for instance: $("input:focus") will get the focused input.

Answer 2

Here is how you can get the id using pure javascript :-

document.activeElement.getAttribute('id')