获取长水平div的宽度，并使用javascript找到中间

Question

I have a 9000px horizontal div container and I want to find it's middle part.

I have this code but its getting the whole width of the window not the container div.

    $(document).ready(function(){
     scrollTo(($(document).width() - $(window).width()) / 2, 0);
});

Here's a jsFiddle of the whole code

Answer 1

It should not be $(document) instead if the id of the 9000px div is #long_div, see the code below.

$(document).ready(function(){
  scrollTo($("#long_div").width()/2, 0);
});