jquery - 无法读取未定义的属性“左侧”

Question

试图弄清楚为什么 chrome 会抛出错误

“未捕获的类型错误：无法读取未定义的属性‘左’”

虽然#explorenav效果很好，但#experiencenav似乎不起作用。我错过了什么吗？

JS代码：

$('.nav li#explorenav a').click(function(){
    $('body').animate({scrollLeft: $("#explore").offset().left-15}, 1000, function(){
        $(this).parent().addClass('active');
    });

    return false;
});

$('.nav li#experiencenav a').click(function(){
    $('body').animate({scrollLeft: $("#experience").offset().left-15}, 1200, function(){
        $(this).parent().addClass('active');
    });

    return false;
});

HTML 代码：

<div id="explore">
    <div class="Features">
        <div class="Feature1" title="The Active Park Assist feature can find parking spaces for you and help manoeuvre your car into them, as if by magic.">
            &nbsp;
        </div>
        <div class="Feature2" title="The luxurious and athletic Interior has sports front seats with red stitching and belts, making you wish the journey never ended">
            &nbsp;
        </div>
        <div class="Feature3" title="With Collision Prevention Assist and Attention Assist you can rest assured that you’ll get to wherever you’re going, safely.">
            &nbsp;
        </div>
    </div>
</div>

<div id="experience">
    <div class="Video">
        <iframe id="Youtube" width="650" height="366" src="http://www.youtube.com/embed/XS6S8qSMvBE?wmode=opaque" frameborder="0" wmode="transparent" allowfullscreen  ALLOWTRANSPARENCY="true"></iframe>

        <button class="prev">&nbsp;</button>
        <button class="next">&nbsp;</button>
        <div class="VideoControls">
            <ul class="Vid">
                <li id="01" class="Video1" onClick="_gaq.push(['_trackEvent', 'Pulse', 'onClick', 'ENGLISH']);">
                    &nbsp;
                </li>
                <li id="02" class="Video2" onClick="_gaq.push(['_trackEvent', 'Performance', 'onClick', 'ENGLISH']);">
                    &nbsp;
                </li>
                <li id="03" class="Video3" onClick="_gaq.push(['_trackEvent', 'Parking Assist', 'onClick', 'ENGLISH']);">
                    &nbsp;
                </li>
                <li id="04" class="Video4" onClick="_gaq.push(['_trackEvent', 'Flow', 'onClick', 'ENGLISH']);">
                    &nbsp;
                </li>
                <li id="05" class="Video5" onClick="_gaq.push(['_trackEvent', 'Spike', 'onClick', 'ENGLISH']);">
                    &nbsp;
                </li>
                <li id="06" class="Video6" onClick="_gaq.push(['_trackEvent', 'Product film', 'onClick', 'ENGLISH']);">
                    &nbsp;
                </li>
            </ul>
        </div>
    </div>
</div>

Answer 1

在您的现场脚本中，您有以下代码：

$('.nav li#experiencenav a').click(function(){
     $('body').animate({scrollLeft: $("#experience .EmptyPage").offset().left-20}, 1200, function(){
      $(this).parent().addClass('active');
      $('li#homenav, li#discovernav, li#explorenav, li#downloadnav').removeClass('active');
     });
      return false;
    });

它找不到元素$("#experience .EmptyPage")。但是你的 div 里面有 div#explore有这个 div：

<div class="EmptyPage">
 &nbsp;
</div>

这就是为什么您的代码适用于explore link，但不适用于其他链接。