返回值:jQuerynextAll([selector])
   Get all following siblings of each element in the set of matched elements, optionally filtered by a selector.
- 
            1.2 新增nextAll([selector])selector (String) 可选参数,用于匹配元素的选择器字符串
Given a jQuery object that represents a set of DOM elements, the .nextAll() method allows us to search through the successors of these elements in the DOM tree and construct a new jQuery object from
            the matching elements.
         
The method optionally accepts a selector expression of the same type that we can pass to the $() function. If the selector is supplied, the elements will be filtered by testing whether they match it.
         
Consider a page with a simple list on it:
<ul> <li>list item 1</li> <li>list item 2</li> <li class="third-item">list item 3</li> <li>list item 4</li> <li>list item 5</li> </ul>
If we begin at the third item, we can find the elements which come after it:
$('li.third-item').nextAll().css('background-color', 'red');
         The result of this call is a red background behind items 4 and 5. Since we do not supply a selector expression, these following elements are unequivocally included as part of the object. If we had supplied one, the elements would be tested for a match before they were included.
示例:
Locate all the divs after the first and give them a class.
<!DOCTYPE html>
<html>
<head>
<style>
  div { width: 80px; height: 80px; background: #abc; 
        border: 2px solid black; margin: 10px; float: left; }
  div.after { border-color: red; }
  </style>
<script src="jquery.min.js"></script>
</head>
<body>
<div>first</div>
  <div>sibling<div>child</div></div>
  <div>sibling</div>
  <div>sibling</div>
<script>
$("div:first").nextAll().addClass("after");
</script>
</body>
</html>演示:
示例:
Locate all the paragraphs after the second child in the body and give them a class.
<!DOCTYPE html>
<html>
<head>
<style>
  div, p { width: 60px; height: 60px; background: #abc;
           border: 2px solid black; margin: 10px; float: left; }
  .after { border-color: red; }
  </style>
<script src="jquery.min.js"></script>
</head>
<body>
<p>p</p>
  <div>div</div>
  <p>p</p>
  <p>p</p>
  <div>div</div>
  <p>p</p>
  <div>div</div>
<script>
    $(":nth-child(1)").nextAll("p").addClass("after");
</script>
</body>
</html>