Elevator Chart not shown

Hello Dima,

1. I have the problem that the elevation profile graphic is not displayed under the map. In addition, the colour setting and the thickness of the line for the track are not taken from the defined settings. 

clemensschnitzler.eu/touren/tagestouren/312-zum-kornsand.html

I would be very grateful if you could help me with the solution.

2. when installing with a different template, the graphic is displayed, but the settings for the colour and thickness of the line are not applied there either.

c-schnitzler.eu/touren/tagestouren/zum-kornsand.html

The same GPX data is available for both installations. The latest versions of Joomla 5 and Zh OpenStreetMap are installed.

Many thanks for your support
 

I can see that on your map without elevation - page contains errors and "unreachable code after return statement".
Probably some plugins breaks code

I have a complete new installation with the newest joomla version and only with the component of zh openstreetmap and the templates Amazed Photography and Cassiopeia.

With the Cassiopeia Template its all fine. There i see the map and the elevation chart:
c-schnitzler.de/index.php/foto/test/test

With the template Amazed Photography i only get the map:
c-schnitzler.de/index.php/foto/fotowalks/kornsand

Please be so kind and have a look.

Maybe you can tell me what needs to be changed in order to see the map and the elevation chart in the Amazed Photography template.

Regards

Clemens

Hi Clemens

I can tell again - your page contains errors and warnings.
 
I can see that elevation div is not filled (initialized).

Hi Dima

I was looking into this issue for Mr. Clemens Schnitzler and came to the following findings:

When Leaflet‑Elevation’s _loadModules calls its internal _registerHandler, it iterates over a handlers array using Underscore’s _.each. Because s5_flex_menu‑min.js globally extends Array.prototype with extra enumerable functions, those prototype methods are treated as array entries — causing Leaflet‑Elevation to invoke _registerHandler on unrelated functions. Only the six intended handler functions (Distance, Time, Altitude, Slope, Speed, Acceleration) should be registered; everything else should be ignored.

Steps to Reproduce

   1. Load a page that includes both Leaflet‑Elevation and s5_flex_menu‑min.js. -> For example: c-schnitzler.eu/touren/tagestouren/312-zum-kornsand.html
   2. Observe console error
   3. Insert a breakpoint or console.trace() in Array.prototype.clean to view the call stack.
   4. You’ll see _loadModules → _.each(handlers, …) invoking _registerHandler on functions defined in s5_flex_menu‑min.js.

Expected Behavior

Only the six elevation‑specific handler functions defined by Leaflet‑Elevation should be passed into _registerHandler. Prototype methods added by unrelated scripts (e.g., s5_flex_menu) must not be iterated or registered.


Actual Behavior

Because s5_flex_menu‑min.js pollutes Array.prototype with additional enumerable functions, _.each includes those functions in the iteration. Leaflet‑Elevation’s _registerHandler is therefore called on unexpected handlers, breaking downstream logic.


Root Cause Analysis

Prototype Pollution: s5_flex_menu‑min.js extends Array.prototype (adding custom methods) in a way that makes them enumerable.
Iteration Method: Underscore’s _.each iterates over all enumerable properties (including inherited ones) when arrays have prototype extensions.
Handler Registration Logic: Leaflet‑Elevation assumes only its own handler functions exist in the handlers array; it does not filter out inherited prototype properties.

I saw that you are using a many years old version of Leaflet‑Elevation (@raruto/leaflet‑elevation). Maybe in more recent versions, Leaflet‑Elevation solved the each with the .each iteration, but I haven't investigated that.

Can you reproduce the issue on your side? How would you suggest to continue? Is updating to the latest version of Leaflet‑Elevation an option for you?

Edit: We noticed that this thread here is currently located in the Zh GoogleMap section, but concerns the Zh OpenStreetmap section.



 

Hi
I can check what current version of "Leaflet‑Elevation" extension is, and, can add link to the last version of it.
Misbehavior of the third party extensions - it is not mine problem, I just use "Leaflet‑Elevation" as is for my extension.
I will post there if I will do release with fresh version of it.