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I had this problem while working on Leaflet but I think it can be generalized to the issue of passing parameters to an event handler in Javascript. With the « bind » method of jQuery, you can pass parameters by using the data property of event (the object sent when an event is triggered) :

$(marker).bind("click", { parameter : its_value, parameter2: its_value }, function(event) {
console.log("Your parameter is :" + event.data.parameter);
console.log("Your parameter2 is :" + event.data.parameter2);
// your code goes here
});
JavaScript

As « marker » was a L.Marker object, I had to convert it into a jQuery object before applying the bind method. Thank you Anurag on StackOverflow !!