Leaflet: Cannot read property '_leaflet_id' of undefined

[JonnyBGod]

Some time when refreshing the page I am getting this error in chrome:

Uncaught TypeError: Cannot read property '_leaflet_id' of undefined leaflet.js:6
(anonymous function) leaflet.js:6
n.Map.n.Class.extend.hasLayer leaflet.js:6
domController.map.manageZoom domController.leaflet.js:647
n.Mixin.Events.fireEvent leaflet.js:6
n.Map.n.Class.extend._resetView leaflet.js:6
n.Map.include.n.DomUtil.TRANSITION._onZoomTransitionEnd leaflet.js:6
n.Map.include.n.DomUtil.TRANSITION._catchTransitionEnd leaflet.js:6
e.(anonymous function).u

this happen when:

if (!map.hasLayer(tilelayer)) {}

Any idea why this is happening and how to solve it?
When this happens the map gets unusable until refresh.

[mourner]

This happens when tilelayer variable is undefined at the moment when this line executes. Put a debugger statement there and figure it out, shouldn't be hard.

[KeshavGeek]

Thank you.

[asotoopensky]

Hi,

I'm having the same problem with Leaflet 1.0 Beta. I got this error:

Uncaught TypeError: Cannot read property '_leaflet_id' of undefined

on this line:
obj._leaflet_id = obj._leaflet_id || ++L.Util.lastId;

on stamp function

Can you help me with this please?. I created a new ticket (https://github.com/Leaflet/Leaflet/issues/3877)

[hlj184]

这个问题一般是由于你用addLayer（tileLayer）时，这个tileLayer值为null引起的，检查一下tileLayer的初始化是否正确