We know that
let obj1 = {};
obj1.x = "value";
let obj2 = {"key":"value"};
obj2[obj1] = "another value";
console.log(obj2[obj1]);Above will print the "another value" properly on the console. Need to understand how. Does it store the address of obj1 for the key to match with the value?
Object property names can be strings or Symbols. Anything that is not a Symbol will be converted to a string.
A plain object's toString method will convert it to "[object Object]".
You can see that string if you log the entire object.
let obj1 = {};
obj1.x = "value";
let obj2 = {"key":"value"};
obj2[obj1] = "another value";
console.log(obj2);
console.log(obj1.toString());This does, of course, mean that if you try to set ob2[obj3] at some point, with another object, then even if obj3 is a different object it will still be converted to the same string and overwrite the previous value.