在不离开页面的情况下将新项目添加到html选择列表。怎么样？

I've always wondered what is the best way to add a new item to html-select in a website. Yes, this may sound silly but it is a great problem from the usability perspective. I don't want the user to be taken to a new page every time they need to add new item to a html-select.I've always wondered what is the best way to ad