Question

好的我有这段HTML，它在页面上出现几次，它总是在结构上相同，但链接和链接文本每次都会与列表文本不同。

<ul>
<li class="n1">Understand key issues relating to creating animations for interactive media products</li>
<li class="n2">Understand key contextual information relating to creating 2D animations for interactive media products</li>
<li class="n3">Be able to create 2D animations for use as part of an interactive media product</li>
<li class="n4">Be able to liaise with relevant parties</li>
<li class="n5">Be able to store 2D animations for use as part of an interactive media product</li>
</ul>
<hr />
<a href="alcohol_calculator.php" class="swfselector">
&raquo; Alcohol unit calculator prototype <img class="tab" src="/images/1.png" width="30" height="28" alt="1" /> <img class="tab" src="/images/2.png" width="30" height="28" alt="2" /><img class="tab" src="/images/3.png" width="30" height="28" alt="3" /> <img class="tab" src="/images/5.png" width="30" height="28" alt="5" />
</a>
<a href="bouncing_ball.php" class="swfselector">
&raquo; Bouncing ball animation <img class="tab" src="/images/3.png" width="30" height="28" alt="3" />
</a>
<a href="FOCC_mnemonic.php" class="swfselector">
&raquo; FOCC mnemonic <img class="tab" src="/images/1.png" width="30" height="28" alt="1" /> <img class="tab" src="/images/2.png" width="30" height="28" alt="2" /> <img class="tab" src="/images/3.png" width="30" height="28" alt="3" /> <img class="tab" src="/images/5.png" width="30" height="28" alt="5" />
</a>
<a href="information_literacy_quiz.php" class="swfselector">
&raquo; Information literacy quiz <img class="tab" src="/images/1.png" width="30" height="28" alt="1" /> <img class="tab" src="/images/2.png" width="30" height="28" alt="2" /> <img class="tab" src="/images/3.png" width="30" height="28" alt="3" /> <img class="tab" src="/images/5.png" width="30" height="28" alt="5" />
</a>
<a href="traffic_lights.php" class="swfselector">
&raquo; Traffic lights <img class="tab" src="/images/1.png" width="30" height="28" alt="1" /> <img class="tab" src="/images/2.png" width="30" height="28" alt="2" /> <img class="tab" src="/images/3.png" width="30" height="28" alt="3" /> <img class="tab" src="/images/5.png" width="30" height="28" alt="5" />
</a>

我正在使用这段Jquery在mousedover时更改每个swfselector链接中的图像：

    $(document).ready(function() {
 $('.swfselector').find('.tab').each(function() {
                $(this).attr("src", 
                $(this).attr("src").replace(".png", "o.png"));  
             })  
});
$('.swfselector').live('mouseover mouseout', function(event) {
  if (event.type == 'mouseover') {
            $(this).find('.tab').each(function() {
                $(this).attr("src", 
                $(this).attr("src").replace("o.png", ".png"));  

             })
   } else {
             $(this).find('.tab').each(function() {
                $(this).attr("src", 
                $(this).attr("src").replace(".png", "o.png"));  
             })
         }
    });

到目前为止这一切都有效...但是现在我有了一块Jquery，它试图改变上面相应的

元素的类。因此，如果有人将鼠标悬停在包含图像的swf选择器上：1.png，3.png和5.png。具有类：n1，n2和n3的列表元素将更改为：n1o n3o和n5o。

$(document).ready(function() {
 $('.swfselector').find('.tab').each(function() {
                $(this).attr("src", 
                $(this).attr("src").replace(".png", "o.png"));  
             })  
});
$('.swfselector').live('mouseover mouseout', function(event) {
  if (event.type == 'mouseover') {
            $(this).find('.tab').each(function() {
                $(this).attr("src", 
            $(this).attr("src").replace("o.png", ".png"));  
            var srcString =  $(this).attr("src").substr(0, $(this).attr("src").length - 4);
            nameString =  srcString.substr(8, srcString.length - 1);
            $(this).closest('ul').find('li').each(function() {
            var className = $(this).attr('class');
              if (nameString.indexOf(className)) {
                  $(this).removeClass(className).addClass(className + 'o');
                  }
                })
             })
   } else {
             $(this).find('.tab').each(function() {
                $(this).attr("src", 
                $(this).attr("src").replace(".png", "o.png"));  
             })
         }
    });

上面的代码没有返回任何错误，但是没有做我想要的。

Answer 1

 $(this).closest('ul').find('li').each(function() {

$（this）似乎是指'.swfselector'，通过使用最近的，你正在搜索祖先。但UL不是'.swfselector'的祖先

编辑：

而不是$（this）.closest（'ul'）你应该这样做：

$('ul').find('li').each(function() {....

甚至更好，给你'ul'一个id

$('#myUL').find('li').each(function() {

Jquery：在鼠标悬停另一个元素时更改某个类

1 个答案: