Prototype - next() 方法

此方法检查元素是否与给定的 CSS 选择器匹配。

语法

element.next( [cssRule][, index = 0]);

返回值

如果找到一个元素，则返回 HTML 元素，否则返回 undefined。

示例

<html>
   <head>
      <title>Prototype examples</title>
      <script type = "text/javascript" src = "/javascript/prototype.js"></script>
      
      <script>
         function showResult() {
            var str = $('list-of-apples').next();
            alert( "$('list-of-apples').next() " + str.innerHTML );
   
            var str = $('list-of-apples').next(0);
            alert( "$('list-of-apples').next(0) " + str.innerHTML  );
   
            var str = $('title').next('p');
            alert( "$('$('title').next('p') " + str.innerHTML  );

            var str = $('golden-delicious').next('.yummy', 1);
            alert( "$('golden-delicious').next('.yummy', 1) " + str.innerHTML);

            var str = $('ida-red').next();
            alert( "$('ida-red').next() " + str );
         }
      </script>
   </head>

   <body>
      <p>单击按钮查看结果。</p>
      
      <ul id = "fruits">
         <li id = "apples">
            <h3 id = "title">Apples</h3>
            <ul id = "list-of-apples">
               <li id = "golden-delicious">Golden Delicious</li>
               <li id = "mutsu">Mutsu</li>
               <li id = "mcintosh" class = "yummy">McIntosh</li>
               <li id = "ida-red" class = "yummy">Ida Red</li>
            </ul>
            <p id = "saying">An apple a day keeps the doctor away.</p>  
         </li>
      </ul>
      <br />
      
      <input type = "button" value = "Show Result" onclick = "showResult();"/>
   </body>
</html>

输出

prototype_element_object.html