问题描述
为什么 navigator.appName 为Safari，Firefox和Chrome返回Netscape？
Why does navigator.appName return "Netscape" for Safari, Firefox and Chrome?
与旧浏览器Netscape有关系？可能是因为DOM0吗？
What do they have to do with the old browser Netscape? Could it be because of DOM0?
推荐答案
是的，这是兼容性问题，不要依赖。
MDN 表示：这原本是DOM Level 0的一部分，但已经包含在HTML5规范中。
Yes and that's for compatibility issues and not to be relied on.
MDN says: "This was originally part of DOM Level 0, but has been since included in the HTML5 spec."
请参阅。
See Mozilla documentation here.
BTW;这就是为什么这不能用于浏览器检测。 浏览器检测是一种BAD实践，您应该尽可能避免。 。但是，如果有人坚持这个;他们应该使用 userAgent 属性。
BTW; that's why this cannot be used for browser detection. Browser detection is a BAD practice and you should always avoid it where possible. Do feature detection instead. But if anybody insists on this; they should use the userAgent property instead.
更新1 ：根据; IE11 现在还返回Netscape为 navigator.appName 属性，以反映HTML5标准和匹配其他浏览器的行为。另请参阅 userAgent string ...更多功能检测 ...
UPDATE 1: According to Compatibility Changes; IE11 now also returns "Netscape" for navigator.appName property, to reflect the HTML5 standard and to match behavior of other browsers. Also see changes in userAgent string here... More on feature detection here...
更新2 ： Microsoft Edge 返回Netscape为 navigator.appName 。
UPDATE 2: Microsoft Edge also returns "Netscape" for navigator.appName.
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