Javascript 如何在 BootStrap 中将焦点设置在输入的第一个字段上？
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How to set focus on first field of input in BootStrap?
提问by Dharmik Bhandari
Possible Duplicate:
How to set the focus to the first input element in an HTML form independent from the id?
I'm using BootStrap with ASP.NET MVC4. There is one login form but I'm unable to set focus on first input field.
我在 ASP.NET MVC4 中使用 BootStrap。有一个登录表单，但我无法将焦点设置在第一个输入字段上。
How to set focus on first field of input? Is there any BootStrap class that uses to set focus?
如何将焦点设置在输入的第一个字段上？是否有任何用于设置焦点的 BootStrap 类？
回答by Jeromy French
There isn't a Bootstrap-specific class or function that does this*, but HTML5 provides the autofocusattributefor input fields.
没有特定于 Bootstrap 的类或函数可以执行此操作*，但 HTML5为输入字段提供了该autofocus属性。
This attribute currently enjoys wide browser support.
*-Since you are using Bootsrap, and Bootstrap is powered by jQuery, you could "shim" older browsers that otherwise don't support autofocus:
*-由于您使用的是 Bootsrap，并且 Bootstrap 由 jQuery 提供支持，因此您可以“填充”不支持自动对焦的旧浏览器：
$('[autofocus]:first').focus();
