VRDisplayCapabilities.hasExternalDisplay

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句法
范例
规范
浏览器兼容性
另请参阅
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这是实验性技术
检查浏览器兼容性表格要小心谨慎在生产中使用这之前。

hasExternalDisplay 只读特性在 VRDisplayCapabilities interface returns a 布尔 stating whether the VR display is separate from the device's primary display.

注意 : If presenting VR content would obscure other content on the device, this will return false , in which case the application should not attempt to mirror VR content or update non-VR UI because that content will not be visible.

句法

var hasAnExternalDisplay = vrDisplayCapabilitiesInstance.hasExternalDisplay;

值

A 布尔 .

范例

function reportDisplays() {
  navigator.getVRDisplays().then(function(displays) {
    for(var i = 0; i < displays.length; i++) {
      var cap = displays[i].capabilities;
      // cap is a VRDisplayCapabilities object
      var listItem = document.createElement('li');
      listItem.innerHTML = '<strong>Display ' + (i+1) + '</strong>'
                   + '<br>VR Display ID: ' + displays[i].displayId
                   + '<br>VR Display Name: ' + displays[i].displayName
                   + '<br>Display can present content: ' + cap.canPresent
                   + '<br>Display is separate from the computer\'s main display: ' + cap.hasExternalDisplay
                   + '<br>Display can return position info: ' + cap.hasPosition
                   + '<br>Display can return orientation info: ' + cap.hasOrientation
                   + '<br>Display max layers: ' + cap.maxLayers;
      list.appendChild(listItem);
    }
  });
}

规范

规范	状态	注释
WebVR 1.1 The definition of 'hasExternalDisplay' in that specification.	草案	初始定义

浏览器兼容性

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
`hasExternalDisplay` 弃用	Chrome No	Edge 15 — 79	Firefox 55 55 Windows support was enabled in Firefox 55. 64 macOS support was enabled in Firefox 64.	IE No	Opera ?	Safari ?	WebView Android No	Chrome Android 56 — 80 Disabled 不支持 56 — 80 Disabled Only works in an experimental version of Chrome . (Other builds won't return any devices when `Navigator.getVRDisplays()` is invoked.) Daydream View supported in Chrome 56. Google Cardboard supported in Chrome 57. Disabled From version 56 until version 80 (exclusive): this feature is behind the `WebVR` preference. To change preferences in Chrome, visit chrome://flags.	Firefox Android 55	Opera Android ?	Safari iOS ?	Samsung Internet Android 6.0 6.0 Google Cardboard supported in Samsung Internet 7.0.

图例

完整支持
不支持
兼容性未知 ?
实验。期望将来行为有所改变。
弃用。不要用于新网站。

用户必须明确启用此特征。

另请参阅

WebVR API homepage
MozVr.com — demos, downloads, and other resources from the Mozilla VR team.

元数据

最后修改： 2019 年 3 月 23 日

WebVR API
VRDisplayCapabilities
特性
1. canPresent
2. hasExternalDisplay
3. hasOrientation
4. hasPosition
5. maxLayers
Related pages for WebVR API

在此页

句法

值

范例

规范

浏览器兼容性

图例

另请参阅

相关话题