Question

I have issue to unbind one listeners that listen one of shared emitter:

// this is emitter. Fire always in a.b.c namespace but with different parameters 
$(document).trigger("a.b.c", {
    p: 1,
    p2: ...

});

// listener 1
$(document).bind("a.b.c", function(e, object) {
    if (object.myParam) {
        ....
    }
});

// listener 2
$(document).bind("a.b.c", function(e, object) {
    if (object.anotherParam) {
        ....
    }
});

How to unbind listener 2, so listeners 1 still continue work?

Answer 1

I found better solution Namespaced Events

// this is emitter. Fire always in a.b.c namespace but with different parameters 
$(document).trigger("a.b.c", {
    p: 1,
    p2: ...

});

// listener 1
$(document).bind("a.b.c.listener1", function(e, object) {
    if (object.myParam) {
        ....
    }
});

// listener 2
$(document).bind("a.b.c.listener2", function(e, object) {
    if (object.anotherParam) {
        ....
    }
});

Now trigging a.b.c will trigger with listener1 and listener2.
And to unbind – just unbind with specific listener, like:

$(document).unbind("a.b.c.listener1");

In that case listener2 will be preserved, and will be able to invoked via namespace a.b.c