window.navigator && window.navigator.msSaveOrOpenBlob这是什么意思

The window.navigator object provides information about the user's browser and operating system.

Some of the properties available in the window.navigator object include:

- userAgent: returns a string representing the user agent header sent by the browser to the server
- appCodeName: returns the code name of the browser
- appName: returns the name of the browser
- appVersion: returns the version information of the browser
- platform: returns the operating system platform used by the browser
- language: returns the language of the browser
- product: returns the product name of the browser

Developers can use this object to detect the user's browser and operating system, and to adjust the website's behavior accordingly.