如何检测文本框是否具有焦点? [英] how to detect if the text box has focus ?

问题描述

你好，
我的网络表单中有很多文本框，并且我想通过单击或使用Tab键来检测具有焦点的文本框的ID.

Hello,
I have many textboxes in my webform and i want to detect the id of the textbox which has the focus, whether by clicking or by using tab key.

推荐答案

将onFocus 归入TextBox内部，并在onFocus 触发时运行Js.

即

put the onFocus attribute inside the TextBox and run Js when onFocus triggeres.

i.e.

TempTextBox.Attributes.Add("onFocus", "DoFocus(this);");

现在把Js 换为DoFocus

Now the put the Js for DoFocus

function DoFocus(this)
{

}

现在对象this是您的TextBox 对象，现在可以根据需要使用它.

如果有帮助，请 投票 和 接受答案 .

Now object this is your TextBox object now play with it as you want.

Please vote and Accept Answer if it Helped.

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