function f(aParam) { var x=43; var z=""; var y={some: "object"}; // => 4 properties: aParam, x, z, y } function g(aParam) { var x=43; var z=""; var y={some: "object"}; var a=x+z, q=[22], p; // => 5 properties: z, y, a, q, p } f("foo"); g("bar");