Question

无法检测浏览器，我想将其显示为警告（这是http://mozilla.github.com/webrtc-landing/中的一节）

    <h3 id="gum" style="color: red; display: none;">
    mozGetUserMedia is missing, do you have the latest
    <a href="http://nightly.mozilla.org/">Nightly</a> and set
    <i>media.navigator.enabled</i> to true?
    </h3>
<script>
 if (!navigator.webkitGetUserMedia || !navigator.mozGetUserMedia) {
    document.getElementById("gum").style.display = "block";}
</script>

这在How can I check webRTC datachannel compatibility using JavaScript in client side?中讨论过但不支持navigator.webkit和moz，我应该怎么做？

Answer 1

if( !( navigator.getUserMedia || navigator.webkitGetUserMedia ||
    navigator.mozGetUserMedia || navigator.msGetUserMedia ) ) {
    // getUserMedia is not supported
}

改编自Capturing Audio & Video in HTML5。

或

navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia ||
        navigator.mozGetUserMedia || navigator.msGetUserMedia;

if ( !navigator.getUserMedia ) {
    // getUserMedia is not supported
}

评论：

var browser = BrowserDetect.browser,
    version = parseInt( BrowserDetect.version, 10 );

if ( !( browser == 'Chrome' && version > 25 ||
     browser == "Firefox" && version > 18 ) ) {
     // do stuff
}

功能检测比浏览器嗅探更可取。

检测浏览器是否支持特定功能？

1 个答案: