Return | Simple function

Question

I was thinking if someone know an advantage/problem to convert a basic function from:

function( param1, param2 ){

var result = param1 % param2;
return result;

}

To something like:

function( param1, param2 ){

return param1 % param2;

}

When we do not need to check params or do something else? Cause I'm curious to know if declare X times the same var is good for performances.

Answer 1

I think declaring less local variable is good for performance because it consumes less registry in the processor, in c# we are suggested to only have 64 locals including compiler generated variable in a method because the processor registry only can hold maximum 64 locals.

Answer 2

Ok, thanks for your answer, I guessed something like that. Must be hard to find the correct balance between to many local var to keep an easy to read code and no local var.