Passing parameters to function with variable or modifying during passing

Question

While passing parameter to function, there are two ways to pass and i'm not sure about which one is better?

First one is:

const foo = (bar) => bar;

number = 3.4567;
foo(number.toFixed(2));

Second one is:

const foo = (bar) => bar;

number = 3.4567;
fixedNumber = number.toFixed(2);
foo(fixedNumber);

Answer 1

It is basically the same but in the second one you define a new variable for fixedNumber , thus making your code more readable for other developers.