Opera Safari Chrome Android Firefox for Android Opera Android Safari on iOS Samsung Internet WebView Android WebView on iOS Deno Node.js switch Legend Tip: you can click/tap on a cell for more information. Full support Full support 参见
function testMyNumber(number) { switch (number) { case 6: return number+" is 6"; break; case 3: case 4: return number+" is 3 or 4"; break; case 9: case 10 : return number+" is 9 or 10"; break; default: return number+" is not in 3,4,6,9,10"; break; } }; ...
现代JavaScript 教程:开源的现代 JavaScript 从入门到进阶的优质教程。React 官方文档推荐,与 MDN 并列的 JavaScript 学习教程[1]。 在线免费阅读:https://zh.javascript.info 参考资料 [1] React 官方文档推荐,与 MDN 并列的 JavaScript 学习教程:https://zh-hans.reactjs.org/docs/getting-started.html#javascript...
for-in 循环 for-in MDN文档for...in语句以任意顺序遍历一个对象的除 Symbol 以外的可枚举属性,包括继承的可枚举属性。 for-in 循环主要用于遍历对象 for()中的格式:for(keys in zhangsan){} keys表示obj对象的每一个键值对的键!!所有循环中,需要使用obj[keys]来取到每一个值!!! for-in 循环,遍历时不...
Implementation bugsare filed: N/A (editorial change) CorrespondingHTML AAM&ARIA in HTMLissues & PRs: N/A (editorial change) MDN issueis filed: N/A (editorial change) The top of this comment includes aclear commit messageto use. (SeeWHATWG Working Mode: Changesfor more details.)...
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JsSIP多媒体设备调用 如果翻看JsSIP源码可以发现类似navigator.mediaDevices.getUserMedia(mediaConstraints).then().catch()这样的代码,所以不用怀疑JsSIP需要在支持WebRTC协议的浏览器上才能运行,所以Apple Mobile要IOS11以上才OK,但是支持也不是很好,需要适配。具体可以查看MDN web docs WebRTC调用摄像头DEMO <!DOCT...
-MDN文档 Check the text color in both your browser's light and dark modes to understand how it works. ,但是,如果您指的是用户控制的主题切换器,则可以如下实现。 主开关 使用更多独立的prefers-color-scheme 您可以创建多个不同的CSS文件,并决定将哪个文件导入项目。这是一个CDN示例,但是在一个...
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