How to kick-ass pass scope through "setInterval"

Question

Dear Masterminds,

I'm currently wondering if there is a better solution than passing this scope to the lambda-function via the parameter 'e' and then passing it to 'funkyFunction' using call()-method

setInterval(function(e){e.funkyFunction.call(e)}, speed, this)

(Minor question aside: I'd been reading something about memory-leaks in javascript. How does the lambda-function affect my memory? Is it better to define it first like var i = function(e)... and then passing it as a parameter to setInterval?)

Answer 1

What's wrong with simply relying on the outer-scope defined variable?

(function() { 

    var x = {};
    setInterval(function() {
       funkyFunction.call(x)
    }, speed);

})();