小编Nie*_*nel的帖子

我只想问为什么引导程序中的下拉子菜单不起作用,我只是按照此链接中的说明:(http://getbootstrap.com/2.3.2/components.html)但仍然是下拉菜单上的子菜单没有出现.顺便说一下,我没有更改或覆盖CSS中的类.

这是我的代码!:)

<li class='dropdown'><a class='dropdown-toggle active' data-toggle='dropdown' href='#'><img src = 'images/forbank.png' height = 35 width = 35>Banking<span class='caret'></span></a>
                <ul class='dropdown-menu'>
                    <li class = 'dropdown-submenu'><a tabindex='-1' href='#'><span class = 'glyphicon glyphicon-cog'> </span>  Transaction</a>
                        <ul class='dropdown-menu' role = 'menu'>
                            <li><a tabindex='-1' href='#'> Withdrawal / Deposit </a></li>
                            <li><a tabindex='-1' href='#'> Fixed Deposit </a></li>
                        </ul>
                    </li>
                    <li role='separator' class='divider'></li>
                    <li><a href='#'><span class='glyphicon glyphicon-list-alt'> </span> Summaries </a></li>
                    <li><a href='#'><span class='glyphicon glyphicon-wrench'> </span>  Settings </a></li>
                </ul>
            </li>

与我之前的问题相关(引导程序上的下拉子菜单不起作用)我正在为li下拉列表的子菜单构建一个子菜单.所以这意味着它是嵌套的.在银行菜单下有交易下拉菜单,在交易下拉菜单下面有一个不同类型交易的菜单.顺便说一句,我已经成功创建了它,但是在悬停期间,"事务"模块的子菜单出现在事务菜单的前面,阻止了作为事务的父菜单.如何在悬停期间将其避开并将其置于交易菜单的右侧？无论如何,我已经完成了使用"下拉菜单下拉菜单右键",但它并没有改变程序的输出.我认为我的CSS有问题.

HTML代码:

    <li class='dropdown'><a id = 'dLabel' class='dropdown-toggle active' data-toggle='dropdown' href='#'><img src = 'images/forbank.png' height = 35 width = 35>Banking<span class='caret'></span></a>
        <ul class='dropdown-menu' role='menu' aria-labelledby='dropdownMenu'>
            <li class = 'dropdown-submenu'>
            <a  tabindex = '-1' href='#'><span class = 'glyphicon glyphicon-cog'> </span>  Transaction </a>
                <ul class='dropdown-menu dropdown-menu-right' aria-labelledby='dLabel'>
                    <li><a tabindex='-1' href='#'> Withdrawal / Deposit </a></li>
                    <li><a tabindex='-1' href='#'> Fixed Deposit </a></li>
                </ul>
            </li>
            <li role='separator' class='divider'></li>
            <li><a href='#'><span class='glyphicon glyphicon-list-alt'> </span> Summaries </a></li>
            <li><a href='#'><span class='glyphicon glyphicon-wrench'> </span>  Settings </a></li>
        </ul> …

如何获取MySQL中特定日期的最新数据？

我们假设我的数据库中记录了一列日期

dates      |     time     |    value
---------------------------------------------
2015-08-05 |    11:03:02  |    200       
2015-08-05 |    23:04:22  |    2400
2015-08-07 |    8:00:22   |    500
2015-08-08 |    13:00:11  |    400
2015-08-08 |    13:23:11  |    200
2015-08-09 |    17:00:23  |    2200
2015-08-09 |    17:06:00  |    1290
2015-08-09 |    19:22:00  |    900
2015-08-13 |    01:01:22  |    1010

我想获得特定日期的最新数据或交易,我期望的结果将是这样的

 dates      |     time    |     value
---------------------------------------------       
2015-08-05  |   23:04:22  |    2400
2015-08-07  |   8:00:22   |    500
2015-08-08  |   13:23:11  |    200
2015-08-09  |   19:22:00  |    900 …

让我们假设我的网页上我有一个<div>里面,如不同的标签<p>,<label>,<span>和任何,他们都具有独特的id属性.在javascript上,我怎样才能获得里面元素的id <div>？

例如:

<div id = "cont">

<p id = '0001'>
Prod One
</p>

<label id = '0002'>
Prod Two
</label>


<p id = '0003'>
Prod Three
</p>


<span id = '0004'>
Prod Four
</span>


</div>

<button onclick = 'getIDsInsideDiv()'>Get The ID of the elements inside the div </button>

如果我要点击按钮,它将输出:

0001, 0002, 0003, 0004