We're looking for a user researcher to understand the needs of developers and designers. Is this you or someone you know? Check out the post: https://mzl.la/2IGzdXS

AudioContext.resume()

AudioContext 的 resume() 方法,恢复之前暂停播放的音频。

如果在OfflineAudioContext上调用,会导致INVALID_STATE_ERR错误。

语法

var audioCtx = new AudioContext();
audioCtx.resume().then(function() { ... });

结果

Promise成功的话返回空值,返回失败是因为context已经关闭了。

示例

下面的代码是 AudioContext states demo (see it running live)的一部分。当点击暂停/恢复按钮的时候,需要AudioContext.state做判断:如果是运行状态,调用suspend(),如果是暂停状态,调用resume()。每次点击事件成功后,按钮的文字也会随着变成对应的状态

susresBtn.onclick = function() {
  if(audioCtx.state === 'running') {
    audioCtx.suspend().then(function() {
      susresBtn.textContent = 'Resume context';
    });
  } else if(audioCtx.state === 'suspended') {
    audioCtx.resume().then(function() {
      susresBtn.textContent = 'Suspend context';
    });  
  }
}

规范

Specification Status Comment
Web Audio API
close()
Working Draft  

兼容性

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 41.0 40.0 (40.0) 未实现 ? ?
Feature Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support ? ? ? ? ? ? 41.0

参见

文档标签和贡献者

此页面的贡献者: maicss
最后编辑者: maicss,