小编emc*_*e22的帖子

我有以下内容:

function checkPalindrom(palindrom)
{

    for( var i = palindrom.length; i > 0; i-- )
    {
        if( palindrom[i] = palindrom.charAt(palindrom.length)-1 )
        {
            document.write('the word is palindrome.');
        }else{
            document.write('the word is not palindrome!');
        }
    }
}
checkPalindrom('wordthatwillbechecked');

我的代码出了什么问题？我想检查这个词是否是回文.

我有一个文件夹,我保存我的图像,命名img/.我有一张包含所有图像的表格:

<table border="3">
    <tr>
        <td>    
            <?php
            $files = glob("img/*");
            foreach ($files as $file) {
                echo "<div class='divimages'>"; 
                echo '<img src="'.$file.'"/>';
                echo "<input type='submit' value='Delete image'/><br>";
                echo "</div>";  
            }
            ?>
        </td>
    </tr>   
</table>

如何删除与按钮关联的图像,其值为:"Delete image".

我不知道这是否可能在CSS中,我相信它可以在js中完成,但我不知道如何...

我有一个带背景的div和一个带有另一个背景的另一个div的文本.我想要的是文本是透明的,并将第一个背景作为文本背景.我不知道这是否清楚,所以我为此创造了一个小提琴:

<div id="first-background">
    <div id="second-background">
        <h1>This text should be transparent and have the first-background as its background and ignore the second background.</h1>
    </div>
</div>

http://jsfiddle.net/K2Ytv/

大家好我有以下脚本:

$(document).ready(function () {
        $('.shoppers-images ul li').click(function () {
            $('.shoppers-images ul li').removeClass('selected');
            $(this).addClass('selected');
        });
    });

这是我希望的...但我确信css是错误的,因为它覆盖了一些声明的值..并且.selected类永远不会显示

#foot-transport{
    background: url(../img/css/register-runner.png) no-repeat;
    background-position: center center;
    margin-right: 20px;
}
#bicycle-transport{
    background: url(../img/css/register-bycicle.png) no-repeat;
    background-position: center center;
}
#van-transport{
    background: url(../img/css/register-van.png) no-repeat;
    background-position: center center;
    margin-left: 20px;
}
 .selected{
   background: url(../img/css/checked-image.png) no-repeat;
   background-position: center center;
}

这是我的HTML:

<div class="span7 shoppers-images">
                <ul>
                    <a href="#"><li id="foot-transport"><span>Individual</span></li></a>
                    <a href="#"><li id="bicycle-transport"><span>Pro Driver/Courier</span></li></a>
                    <a href="#"><li id="van-transport"><span>A Delivery </span></li></a>
                </ul>
            </div> 

问题是:如何在css中声明我的"选定"类,以便它更强大？

在CodeIgniter中检索最后一行(按id排序desc)的正确方法是什么？我试过select_max但我想要整排.

function getLastPagination(){
    $data = array();
    $this->db->query("SELECT id,sort FROM pagination GROUP BY id DESC LIMIT 1");
    $query = $this->db->get('pagination');
    $data = $query->row_array();
    return $data;
}


$data['allpag'] = $this->Model_cats->getLastPagination();
$data['pagin'] = $data['allpag']['sort'];
$per_page = $data['pagin'];  

这里我得到第一个值,但我想要最后一行.

大家好我有以下..

.selected2:first-child{
   background: url(../img/css/first-selected.png) no-repeat !important;
   background-position: center center !important;
   box-shadow: inset 1px 1px 5px 2px rgba(221,221,221,1) !important;
}
.selected2{
   background: url(../img/css/second-selected.png) no-repeat !important;
   background-position: center center !important;
   box-shadow: inset 1px 1px 5px 2px rgba(221,221,221,1) !important;
}
.selected2:last-child{
   background: url(../img/css/third-selected.png) no-repeat !important;
   background-position: center center !important;
   box-shadow: inset 1px 1px 5px 2px rgba(221,221,221,1) !important;
}

它在ie9,chrome,opera,firefox中工作得很完美......但在ie8中我只得到每个li元素的第二个背景.

问题是什么？ie8不支持第一个孩子？