下一类元素的偏移量

Question

在语义HTML中，我试图找出两个标题元素之间的区域有多高。标题元素之间的区域不仅仅是段落元素。

 public static boolean contains(int[] arr, int item) {
  int count=0;
  for (int i=0;i<arr.length;i++) {
     if (item == arr[i]) {
        if(i+1 < arr.length && item == arr[i+1])
           return false;
        else count++;
     }
  }

  return (count == 3);
}

var pageWrapper = $('article');
var sections = pageWrapper.find('h2');

sections.each(function(){
  var section = $(this);
  var sectionThisTop = section.offset().top;
  var sectionNextTop = section.next('h2').offset().top;
  var sectionHeight = sectionNextTop - sectionThisTop;
});