how to pass values in javascript function code example

Example 1: javascript function variable arguments

function foo() {
  for (var i = 0; i < arguments.length; i++) {
    console.log(arguments[i]);
  }
}

foo(1,2,3);
//1
//2
//3

Example 2: if you run a script.js with the code, how do you access the value passed to "var" inside script.js ...

if you run a script.js with the code, how do you access the value passed to "var" inside script.js VAR=value node script.js