js

gistfile1.js

function variablePass(x, obj1, obj2)
{
    x /= 5;
    obj1.id = "newId";
    obj2 = {id: "newId"};
}

var x = 10;
var obj1 = {id: "oldId"};
var obj2 = {id: "oldId"};


variablePass(x, obj1, obj2);