每当关注“输入"时更改"tr"样式? [英] changing `tr` style whenever an `input` was focused?
本文介绍了每当关注“输入"时更改"tr"样式?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有以下html:
<table id="TableNewUser" runat="server" width="50%" cellpadding="3" cellspacing="1"
border="0">
<tr>
<th colspan="2">
New User
</th>
</tr>
<tr>
<td width="50%" align="right">
<asp:TextBox ID="TextBoxUsername" runat="server" Style="direction: rtl;" MaxLength="25"></asp:TextBox>
</td>
<td align="left" width="50%">
UserName
</td>
</tr>
<tr>
<td align="right">
<asp:TextBox ID="TextBoxPass" runat="server" MaxLength="25"></asp:TextBox>
</td>
<td align="left">
Password :
</td>
</tr>
<tr>
<td colspan="2">
<asp:Button ID="ButtonSubmit" runat="server" Text="Submit" OnClick="ButtonSubmitClick" />
</td>
</tr>
</table>
每当文本框被聚焦时，我都想更改tr样式.
我已经在CSS代码下面使用了，但是它不起作用.
I wanna change the tr style whenever the text-boxes are focused.
I've used below CSS code but it doesn't work.
input[type="text"]:focus tr
{
background-color: #e7e7e7;
}
你能指导我吗?
推荐答案
正如Dissappointment先生所述，您必须使用JavaScript(或jquery)来实现所需的功能.
As Mr. Dissappointment stated, you must use JavaScript (or jquery) to achieve what you want.
我编写了一个非常简单的HTML页面进行示例:
I coded a very simple HTML page to exemplify:
<html>
<head>
<script type="text/javascript">
function changeTrStyle()
{
document.getElementById("trId").style.background = "red";
}
</script>
</head>
<body>
<table>
<tr id="trId">
<td>
<input type="text" onfocus="changeTrStyle()"/>
</td>
</tr>
</table>
</body>
</html>
如果将焦点放在文本框中， tr 背景将变为红色.
If you focus the textbox, the tr background will become red.
注意:已在Safari和Chrome上进行了测试.
Note: Tested on Safari and Chrome.
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