由网友(北辰)分享简介：我有一个标准输入：我想有这种渲染一个充满活力的 HTML5占位符。是这样的：'Code BehindtxtSearchTerm.**placeholder** = "Search " + Si...

我有一个标准输入：

<asp:TextBox type="text" runat="server" id="txtSearchTerm" />

我想有这种渲染一个充满活力的 HTML5占位符。是这样的：

'Code Behind
txtSearchTerm.**placeholder** = "Search " + Site.Name

因此​​，它输出以下HTML：

So that it outputs the following HTML:

<input type="text" runat="server" id="txtSearchTerm" 
placeholder="Search Site #1" />

在这里Site.Name =网站＃1。

where Site.Name = "Site #1".

txtSearchTerm。占位符是不是一个属性。我有它设置为文本，然后运行JavaScript来显示对焦点/隐藏，而是我宁愿只使用HTML5占位符值。我怎样才能使这个？

txtSearchTerm.placeholder is not a property. I have it set to text and then run javascript to show/hide on focus BUT I would much rather just use the HTML5 placeholder value. How can I render this?

请没有JS /客户端的解决方案。

Please no JS/client side solutions.

推荐答案

您可以使用属性集合。所以，你会碰到这样的

You could use the Attributes collection. So you would have something like

txtSearchTerm.Attributes.Add("placeholder", "Search" + Site.Name);

或

txtSearchTerm.Attributes["placeholder"] = "Search" + Site.Name; // or Attributes("placeholder") if you're using vb.net