If an unauthorized visitor attempts entry with an incorrect password, you can choose to display a blank page, redirect to a different URL, or go back to the previous page.

如果未授权的访问者试图输入错误的密码，您可以选择显示一个空白页面、重定向到一个不同的URL，或者返回到先前的页面。

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They can be blank and positioned in unobtrusive areas of the application, or they can be used to display a logo or other branding.

组件可以保持空白并置于应用程序中不引人注意的区域，或者用来显示徽标或其他标志。

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The business card is blank because the code doesn't set the "person" it should display. That's the next step.

由于代码没有设置名片应该显示的“人员”信息，因此名片此时是空白的。

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Over at Philips' demo of their wireless HDMI transmitter, a bunch of techies were fiddling around trying to get the blank display to accept a signal.

ENGADGET: Philips' CES booth tour