Screen
Screen
介面表示了一個用戶端螢幕,通常是指呈現目前頁面的視窗。
一般來說為顯示目前網頁的視窗,可以透過 window.screen
取得物件實體。
屬性
Screen.availTop
(en-US)-
Specifies the y-coordinate of the first pixel that is not allocated to permanent or semipermanent user interface features.
Screen.availLeft
(en-US)-
Returns the first available pixel available from the left side of the screen.
Screen.availHeight
(en-US)-
Specifies the height of the screen, in pixels, minus permanent or semipermanent user interface features displayed by the operating system, such as the Taskbar on Windows.
Screen.availWidth
(en-US)-
Returns the amount of horizontal space in pixels available to the window.
Screen.colorDepth
(en-US)-
Returns the color depth of the screen.
Screen.height
(en-US)-
Returns the height of the screen in pixels.
Screen.left
(en-US)-
Returns the distance in pixels from the left side of the main screen to the left side of the current screen.
Screen.orientation
-
Returns the current orientation of the screen.
Screen.pixelDepth
(en-US)-
Gets the bit depth of the screen.
Screen.top
(en-US)-
Returns the distance in pixels from the top side of the current screen.
Screen.width
(en-US)-
Returns the width of the screen.
Screen.mozEnabled
(en-US)-
Boolean. Setting to false will turn off the device's screen.
Screen.mozBrightness
(en-US)-
Controls the brightness of a device's screen. A double between 0 and 1.0 is expected.
事件處理器
Screen.onorientationchange
(en-US)-
A handler for the
orientationchange
events.
方法
Also inherits methods from its parent EventTarget
.
Screen.lockOrientation
(en-US) 已棄用-
Lock the screen orientation (only works in fullscreen or for installed apps)
Screen.unlockOrientation
(en-US) 已棄用-
Unlock the screen orientation (only works in fullscreen or for installed apps)
範例
if (screen.pixelDepth < 8) {
// use low-color version of page
} else {
// use regular, colorful page
}
規範
Specification |
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CSSOM View Module # the-screen-interface |