检查浏览器通知是否可用 [英] Check if browser notification is available

问题描述

我正在使用浏览器通知，因为它不适用于我要检入 JS代码的每个浏览器（如果可用）。

I am working with browser notifications and because it is not available for every browser I want to check in my JS-code, if it is available.

我在Mozilla开发人员部分中进行了查看：

https://developer.mozilla.org/zh-CN/docs/Web/API/Notifications_API/Using_the_Notifications_API

I took a look in the Mozilla developer section:
https://developer.mozilla.org/en-US/docs/Web/API/Notifications_API/Using_the_Notifications_API

他们告诉我，我应该使用此代码检查浏览器是否具有通知支持：

They tell me that I should use this code to check whether a browser has notification support or not:

  if (!("Notification" in window)) {
    alert("This browser does not support system notifications");
  }

我将该代码复制到了我的网站中；通知仍然可以在以前使用过的浏览器中运行，但是会阻止其他代码的执行（就像在检查代码之前一样）。

I copied that code into my website; the notification still works in the browsers where it worked before but it blocks the execution of other code (as it did before the 'check'-code).

例如：在边缘浏览器中，我收到控制台错误：

For example: in the edge browser, I get the console error:

 'Notification is undefined'

那么检查您的浏览器是否具有通知功能的首选方法是什么？

So what is the preferred method from you to check whether a browser has notification capability?

推荐答案

以下代码将检查浏览器是否与Web通知API兼容

The following code would check whether the browser is compatible with the web notification API

if ('Notification' in window) {
  // API supported
} else {
  // API not supported
}

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