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author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
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committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
commit | 33058f2b292b3a581333bdfb21b8f671898c5060 (patch) | |
tree | 51c3e392513ec574331b2d3f85c394445ea803c6 /files/zh-cn/web/api/audiocontext/state/index.html | |
parent | 8b66d724f7caf0157093fb09cfec8fbd0c6ad50a (diff) | |
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diff --git a/files/zh-cn/web/api/audiocontext/state/index.html b/files/zh-cn/web/api/audiocontext/state/index.html new file mode 100644 index 0000000000..97876f5d3d --- /dev/null +++ b/files/zh-cn/web/api/audiocontext/state/index.html @@ -0,0 +1,111 @@ +--- +title: AudioContext.state +slug: Web/API/AudioContext/state +translation_of: Web/API/BaseAudioContext/state +--- +<p>{{ APIRef("Web Audio API") }}</p> + +<div> +<p>{{ domxref("AudioContext") }}的<code>state属性是只读的,</code>返回<code>AudioContext</code>的当前状态。</p> +</div> + +<h2 id="语法">语法</h2> + +<pre class="brush: js">var audioCtx = new AudioContext(); +var myState = audioCtx.state;</pre> + +<h3 id="返回值">返回值</h3> + +<p>{{domxref("DOMString")}},可能的值如下:</p> + +<ul> + <li><code>suspended</code>: audio context被阻塞了(用{{domxref("AudioContext.suspend()")}} 方法)</li> + <li><code>running</code>: audio context正常运行</li> + <li><code>closed</code>: audio context被关闭了(用{{domxref("AudioContext.close()")}}方法)</li> +</ul> + +<h2 id="例子">例子</h2> + +<p>下面这段代码是<a href="https://github.com/mdn/audiocontext-states/settings">AudioContext states demo</a> (直接运行)中的,其中{{domxref("AudioContext.onstatechange")}}处理器会在每次当前状态发生变化时把它输出到控制台。</p> + +<pre class="brush: js">audioCtx.onstatechange = function() { + console.log(audioCtx.state); +} +</pre> + +<h2 id="规范">规范</h2> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="col">Specification</th> + <th scope="col">Status</th> + <th scope="col">Comment</th> + </tr> + <tr> + <td>{{SpecName('Web Audio API', '#widl-AudioContext-state', 'state')}}</td> + <td>{{Spec2('Web Audio API')}}</td> + <td> </td> + </tr> + </tbody> +</table> + +<h2 id="浏览器兼容性">浏览器兼容性</h2> + +<div>{{CompatibilityTable}}</div> + +<div id="compat-desktop"> +<table class="compat-table"> + <tbody> + <tr> + <th>Feature</th> + <th>Chrome</th> + <th>Firefox (Gecko)</th> + <th>Internet Explorer</th> + <th>Opera</th> + <th>Safari (WebKit)</th> + </tr> + <tr> + <td>Basic support</td> + <td>{{CompatChrome(43.0)}}</td> + <td>{{CompatGeckoDesktop(40.0)}} </td> + <td>{{CompatNo}}</td> + <td>{{CompatUnknown}}</td> + <td>{{CompatUnknown}}</td> + </tr> + </tbody> +</table> +</div> + +<div id="compat-mobile"> +<table class="compat-table"> + <tbody> + <tr> + <th>Feature</th> + <th>Android</th> + <th>Firefox Mobile (Gecko)</th> + <th>Firefox OS</th> + <th>IE Mobile</th> + <th>Opera Mobile</th> + <th>Safari Mobile</th> + <th>Chrome for Android</th> + </tr> + <tr> + <td>Basic support</td> + <td>{{CompatUnknown}}</td> + <td>{{CompatUnknown}}</td> + <td>{{CompatUnknown}}</td> + <td>{{CompatUnknown}}</td> + <td>{{CompatUnknown}}</td> + <td>{{CompatUnknown}}</td> + <td>{{CompatUnknown}}</td> + </tr> + </tbody> +</table> +</div> + +<h2 id="另见">另见</h2> + +<ul> + <li><a href="/en-US/docs/Web_Audio_API/Using_Web_Audio_API">Using the Web Audio API</a></li> +</ul> |