HTML 属性：capture

capture 属性指定应选择性地捕获新文件，以及应使用哪个设备来捕获由 accept 属性定义的类型的新媒体。

¥The capture attribute specifies that, optionally, a new file should be captured, and which device should be used to capture that new media of a type defined by the accept attribute.

值包括 user 和 environment。file 输入类型支持 capture 属性。

¥Values include user and environment. The capture attribute is supported on the file input type.

如果 accept 属性指示输入应属于这些类型之一，则 capture 属性将其值用作指定使用哪个相机来捕获图片或视频数据的字符串。

¥The capture attribute takes as its value a string that specifies which camera to use for capture of image or video data, if the accept attribute indicates that the input should be of one of those types.

值	描述
user	应使用面向用户的摄像头和/或麦克风。
environment	应使用朝外的摄像头和/或麦克风

注意：捕获以前是一个布尔属性，如果存在，则请求使用设备的媒体捕获设备（例如相机或麦克风）而不是请求文件输入。

¥Note: Capture was previously a Boolean attribute which, if present, requested that the device's media capture device(s) such as camera or microphone be used instead of requesting a file input.

<p>
  <label for="soundFile">What does your voice sound like?:</label>
  <input type="file" id="soundFile" capture="user" accept="audio/*" />
</p>
<p>
  <label for="videoFile">Upload a video:</label>
  <input type="file" id="videoFile" capture="environment" accept="video/*" />
</p>
<p>
  <label for="imageFile">Upload a photo of yourself:</label>
  <input type="file" id="imageFile" capture="user" accept="image/*" />
</p>

¥Specifications

¥Browser compatibility