how to select automatically left side link, when I scroll the html page up and down of right side content?

Question

I am trying to make a page, that body contain two part left and right. left contain some anchor tag whose content are contain right. as like enter link description here

Now, I want to scroll page and select automatically left anchor according to right side content.

Please help me any one.....

Answer 1

请参阅此链接https://davist11.github.io/jQuery-One-Page-Nav/filter.html通过查看源代码检查html，css和jquery。