在此页

• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

Screen.colorDepth read-only property returns the color depth of the screen. Per the CSSOM, some implementations return 24 for compatibility reasons. See the browser compatibility section for those that don't.

句法

bitDepth = window.screen.colorDepth;
					

范例

// Check the color depth of the screen
if ( window.screen.colorDepth < 8) {
  // Use low-color version of page
} else {
  // Use regular, colorful page
}
					

规范

规范	状态	注释
CSSOM (CSS 对象模型) 视图模块 The definition of 'Screen.colorDepth' in that specification.	工作草案

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
colorDepth	Chrome 40 40 Starting with version 59 this property is no longer required to always return 24.	Edge 12	Firefox Yes	IE ?	Opera Yes	Safari 6	WebView Android 40 40 Starting with version 59 this property is no longer required to always return 24.	Chrome Android 40 40 Starting with version 59 this property is no longer required to always return 24.	Firefox Android Yes	Opera Android Yes	Safari iOS Yes	Samsung Internet Android 4.0 4.0 Starting with Samsung Internet 7.0 this property is no longer required to always return 24.

图例

完整支持

完整支持

兼容性未知 ?

兼容性未知

见实现注意事项。

另请参阅

• Screen.pixelDepth

元数据

• 最后修改： May 18, 2019

相关话题

1. CSS Object Model
2. Screen
3. 特性

   1. availHeight
   2. availLeft
   3. availTop
   4. availWidth
   5. colorDepth
   6. height
   7. left
   8. mozBrightness
   9. mozEnabled
   10. onorientationchange
   11. orientation
   12. pixelDepth
   13. top
   14. width
4. 方法

   1. lockOrientation()
   2. unlockOrientation()
5. 继承：

   1. EventTarget
6. Related pages for CSSOM

   1. AnimationEvent
   2. CSS
   3. CSSConditionRule
   4. CSSGroupingRule
   5. CSSKeyframeRule
   6. CSSKeyframesRule
   7. CSSMediaRule
   8. CSSNamespaceRule
   9. CSSPageRule
   10. CSSRule
   11. CSSRuleList
   12. CSSStyleDeclaration
   13. CSSStyleRule
   14. CSSStyleSheet
   15. CSSSupportsRule
   16. CaretPosition
   17. LinkStyle
   18. MediaQueryList
   19. MediaQueryListListener
   20. StyleSheet
   21. StyleSheetList
   22. TransitionEvent