I would like to add a marker in a random place in Python folium.

I found the example, which I would like to implement, which is here:


but when I started to make it in Python folium, where my code look like this:

 mapJsVar = map.get_name()


 <div class="marker-position">Click on the map and play with the marker</div>

 <script type="text/javascript">
 """.replace("{map}", mapJsVar)))

I have an error in my JavaScript console:

   **Uncaught ReferenceError: map_b6651fe88e04a627a682cee4dbed8fa4 is not defined**

I don't know why does it still appear, as I clearly declared the replacement. Any ideas?

1 Answer 1


Folium injects the JS code to a place before the line where map object is created.

enter image description here

In the image, Line 1 is where folium adds the code. Line 2 is where the map object is created. Line 1 always run before Line 2. map object is called before defined, so you get the error.

Therefore, wrap the script to be injected always in $(document).ready(function(){ __SCRIPT_HERE__ });. This function ensures that the injected code is run after the map object is created.


import folium

m = folium.Map()

mapJsVar = m.get_name()

<script type="text/javascript">

$(document).ready(function () {
  {map}.on("click", addMarker);

  function addMarker(e) {
    // ustawiamy aby marker był przesuwalny
    const marker = new L.marker(e.latlng, {
      draggable: true,

""".replace("{map}", mapJsVar)))



enter image description here

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