Question

How to pass by reference in JavaScript

Answer 1

let obj = {
  a: 4,
  b: 8
};

function f(obj) {
  obj.a = 13;
}

console.log(obj);

f(obj);

console.log(obj);
 
 
 
 
/*
run:
 
{
  a: 4,
  b: 8
}
{
  a: 13,
  b: 8
}
 
*/

 

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