screen

JavaScript

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JavaScript手册

screen

包含了描述显示屏幕和颜色的属性。

客户端对象
实现版本	Navigator 4.0

创建源

The JavaScript runtime engine creates the screen object for you. You can access its properties automatically.

描述

该对象包含了允许你获取关于用户显示情况信息的只读属性。

属性概览

availHeight	以像素为单位指定了屏幕的高度，minus permanent or semipermanent user interface features displayed by the operating system, such as the Taskbar on Windows.
availWidth	Specifies the width of the screen, in pixels, minus permanent or semipermanent user interface features displayed by the operating system, such as the Taskbar on Windows.
colorDepth	The bit depth of the color palette, if one is in use; otherwise, the value is derived from screen.pixelDepth.
height	Display screen height.
pixelDepth	Display screen color resolution (bits per pixel).
width	Display screen width.

示例

The following function creates a string containing the current display properties:

function screen_properties() {
   document.examples.results.value = "("+screen.width+" x
      "+screen.height+") pixels, "+
      screen.pixelDepth +" bit depth, "+
      screen.colorDepth +" bit color palette depth.";
} // end function screen_properties

属性

availHeight

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.

属性源	screen
实现版本	Navigator 4.0

availWidth

Specifies the width of the screen, in pixels, minus permanent or semipermanent user interface features displayed by the operating system, such as the Taskbar on Windows.

属性源	screen
实现版本	Navigator 4.0

colorDepth

The bit depth of the color palette in bits per pixel, if a color palette is in use. Otherwise, this property is derived from screen.pixelDepth.

属性源	screen
实现版本	Navigator 4.0

height

Display screen height, in pixels.

属性源	screen
实现版本	Navigator 4.0

pixelDepth

Display screen color resolution, in bits per pixel.

属性源	screen
实现版本	Navigator 4.0

width

Display screen width, in pixels.

属性源	screen
实现版本	Navigator 4.0

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