JavaScript Object support

[vladko312]

This can be used to add JS code to node/edge properties.

from pyvis.JScode import JS, JSONEncoder
import json

obj = {'num': 1, 'str': 'some string', 'js': JS('alert("test")')}
js_obj = json.dumps(obj, cls=JSONEncoder)
# js_obj == '{"num": 1, "str": "some string", "js": alert("test")}'

For example, it can set ctxRenderer or apply this fix after adding the functions into the template.

Example:

from pyvis.JScode import JS

node_title = JS("""htmlTitle(
      "Go wild <'span style='display: inline-block; animation: be-tacky 5s ease-in-out alternate infinite; margin: 5px;'>!<'/span>"
    )""")
# to be used in Network.add_node()

I would also recommend adding this code somewhere in template scripts:

function preTitle(text) {
  const container = document.createElement("pre");
  container.innerText = text;
  return container;
}
function htmlTitle(html) {
  const container = document.createElement("div");
  container.innerHTML = html;
  return container;
}