code: def load_javascript_contents(self):
      for lib in self.lib:
          parsed_url = urlparse(lib)
  
          host: str = str(parsed_url.hostname)
          port: int = parsed_url.port
          path: str = parsed_url.path
  
          resp: Optional[http.client.HTTPResponse] = None
          try:
              conn = http.client.HTTPSConnection(host, port)
              conn.request("GET", path)
              resp = conn.getresponse()
              if resp.status != 200:
                  raise RuntimeError(
                      "Cannot load JavaScript lib: %s" % lib
                  )
              self.javascript_contents[lib] = resp.read().decode(
                  "utf-8"
              )
          finally:
              if resp is not None:
                  resp.close()
      return self
  
file_path: pyecharts/pyecharts/render/display.py
imports: from ..types import Optional, Sequence, Union
  from urllib.parse import urlparse
  import http.client
label_desc: Use image node_id 3 for calling the Javascript obj's underlying member method code with example usage: obj.load_javascript_contents() and returns: self