L.Util.isArray() fails in IE9 on "object array"

[Zverik]

I have an array in class options. The whole options object is passed to another class constructor, where it is applied bia L.setOptions(). And it turns out all arrays there turn into objects, which behave as arrays, but are undetectable by L.Util.isArray(). Thus a call to L.latLng(array) fails, because it passes the whole array as a latitude value, leaving longitude undefined.

In opera and firefox (and possible chrome) it works, but fails in IE9 (not 8!). I can't make jsfiddle at the moment (this one works, because I guess it's related to inter-window communication). So please enjoy this screenshot:

[Zverik]

I cannot provide a jsfiddle example, sorry. Just know that the problem exists. I resolved to "duck-typing": checking for 'splice' in coords && 'push' in coords. And after that I do coords = coords.splice() and pass the resulting array to L.latLon(). I guess L.Util.isArray() function should be rewritten.

[mourner]

Please try patching Util.js like this and see if it works:

isArray: Array.isArray || function (obj) {
    return (Object.prototype.toString.call(obj) === '[object Array]');
},

[Zverik]

Yes, it does. Not sure about IE8 though.

[Zverik]

Yep, this solution predictably doesn't work in IE8. I've coded my own checks to prevent the error.