ER note

1. 把SVG放到另外的資料夾和檔案

2. 但是這會造成JS讀不到SVG內容

3. SVG必須改成動態載入, JS也是

4. 但是這會造成CROS
   Access to XMLHttpRequest at 'file:///D:/ER_note/ext_base.svg' from origin 'null' has been blocked by CORS policy: Cross origin requests are only supported for protocol schemes: chrome, chrome-extension, chrome-untrusted, data, http, https, isolated-app.

5. 所以必須用localhost的方式, 解法:

Using Python's HTTP Server:
If you have Python installed, you can start a simple HTTP server by navigating to your project's directory in the command line and running:

python -m http.server

This command will start a server at http://localhost:8000/, allowing you to access your files through a browser.