javascript - ScrollTop on overflow:hidden list items -


I have a simple list, I want to reset the top position every time I click the click button. Although I do not seem to be able to get my scrolls to work and I do not understand why.

This is a

HTML: 

  & lt; Div class = "list-controller" & gt; & Lt; Div class = "arrow-up" & gt; & Lt; / Div & gt; & Lt; ul id = "list" & gt; & Lt; Li id = "first" & gt; Item 1 & lt; / li & gt; & Lt; Li & gt; Item 2 & lt; / li & gt; & Lt; Li & gt; Item 3 & lt; / li & gt; & Lt; Li & gt; Item 4 & lt; / li & gt; & Lt; Li & gt; Item 5 & lt; / li & gt; & Lt; Li & gt; Item 6 & lt; / li & gt; & Lt; Li & gt; Item 7 & lt; / li & gt; & Lt; / Ul & gt; & Lt; / Div & gt; & Lt; Button class = "click" & gt; Click & lt; / Button & gt;   
 CSS:  
  .listContainer {height: 100px; Width: 100px; Background: Gray; Overflow-y: scroll; } Ul # list {background: gray; Overflow-y: scroll; } Li {background: white; Art color; }   
 jQuery:  
  $ ('listcontainer'). ScrollTop () + $ ('li # first'). Event (). Top;    
 
 
 Are you sure you use  $ ('listContainer') Do not like  and  $ ('.listcontainer') do not like ? Besides, why bother up?  .scrollTop (0)  Do not you have to go to the top?

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