What is the method for connecting Echarts to a database?

ECharts is a visualization library based on JavaScript that does not provide a direct method for connecting to databases. Instead, you can use other backend technologies such as Node.js, Java, Python, etc. to connect to the database and pass the query results to the ECharts library on the frontend for visualization.

The specific steps can be as follows:

1. mysql program
2. Python MySQL Interface
3. Write database query statements, perform query operations, and convert the results into JSON format.
4. Transfer the query results to the frontend by sending the data to the frontend page via network requests such as AJAX or Fetch.
5. Integrate the ECharts library into the front-end page, pass data to the ECharts instance using JavaScript, and visualize it for display.

It is important to note that ECharts itself does not restrict the use of specific backend languages or databases, so you can choose the appropriate backend technology according to your project needs to connect to the database and pass data to ECharts for visualization display.