Does this code create a memory leak?

Question

If I have a function like this:

function doSomething(param){
  var tempV = param;//should I even assign it to another variable?
  tempV.css('color','red');
  tempV = null;//Is this necessary?
  //Should I do param = null too?
}

And I run this(the code below) somewhere, possibly in another function:

var elementBeingPassed = $('#someElement');
doSomething(elementBeingPassed);
anotherFunctionSimilarToDoSomething(elementBeingPassed);
elementBeingPassed = null;

Would this create a memory leak? Are all the x = null statements needed?

What I want to do is to not have to query the same element all over again in all the functions, instead just query it once and pass it on.

Answer 1

Those variables are about to go out of scope anyway.

Therefore, setting them to null makes no difference.