RTCSessionDescriptionCallback

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弃用
This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the 兼容性表格 at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

RTCSessionDescriptionCallback type is used to represent the callback function passed into the deprecated callback-based version of createOffer() or createAnswer() when using them to create offers or answers.

Because this function type is part of the legacy WebRTC API, you should avoid using it (and the callback-based forms of createOffer() and createAnswer() that make use of it).

句法

RTCSessionDescriptionCallback(description);

参数

description: RTCSessionDescriptionInit (或 RTCSessionDescription ) object describing the session being offered or being accepted. This object contains the type and sdp properties which are part of RTCSessionDescription .

返回值

The callback doesn't need to return anything, so the return value is undefined .

范例

var pc = new RTCPeerConnection();
var descriptionCallback = function(offer) {
  pc.setLocalDescription(offer);
}
pc.createOffer(descriptionCallback);

规范

规范	状态	注释
WebRTC 1.0: Real-time Communication Between Browsers The definition of 'RTCSessionDescriptionCallback' in that specification.	候选推荐	初始定义。

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
`RTCSessionDescriptionCallback` 弃用	Chrome Yes	Edge ≤18	Firefox 22	IE 不支持 No	Opera ?	Safari ?	WebView Android Yes	Chrome Android Yes	Firefox Android 24	Opera Android ?	Safari iOS ?	Samsung Internet Android Yes

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