How does WeChat applet have address weather in navigation bar?

1. Set the background color and text color of the navigation bar and the text content of the title in the app.json file of the applet. In the applet page, the user's location information is obtained by using the map API provided by WeChat and displayed on the page.

2. Use the third-party weather API to obtain the weather information of the current user's location and display it on the page. Pass the obtained address and weather information to the title of the navigation bar and the position to be displayed in the page through the setData method.