Scope in javascript acting weird

Question

Object are passed with their reference in javascript. Meaning change in that object from any where should be reflected. In this case, the expected output was {} for console.log(

Answer 1

This should help to solve your problem:

var obj = {}, anotherObj = {};
// in case if they are not global, make them global or define parent scope to be able to modify inside the function
window.obj = obj;
window.anotherObj = anotherObj;
function swap(a, b) {
  window[a].newProp = 'XYZ';
  window[a] = window[b]; // now obj is gone, because replaced with anotherObj
}
swap('obj','anotherObj');
console.log(obj); // now it would give Object {}