how to jump to a div section in the same page by using jquery?
You actually don’t need jQuery for this. You can use an
<a href="#id_of_element"></a> link. That will instantly jump to element when clicked. Just make sure the element has a matching ID.
If you want to animate, there are forthcoming CSS properties that allow for animation of scroll position, but they aren’t broadly supported yet. Until they are, I use a small jQuery plugin called .scrollTo().