Javascript Question of the Day #20 [Talk::Overflow]

This post explains a quiz originally shared as a LinkedIn poll . 🔹 The Question function User ( name ) { this . name = name ; } User . prototype . settings = { theme : ' light ' , notifications : true }; const alice = new User ( ' Alice ' ); const bob = new User ( ' Bob ' ); alice . settings . theme = ' dark ' ; console . log ( bob . settings . theme ); console . log ( alice . hasOwnProperty ( ' settings ' )); console . log ( alice . settings === bob . settings ); Hint: When you write alice.settings.theme = 'dark' , ask yourself: are you creating a new property on alice , or reaching through the prototype chain to mutate something shared? Follow me for JavaScript puzzles and weekly curations of developer talks & insights at Talk::Overflow: https://talkoverflow.substack.com/ 🔹 Solution Correct answer: A) dark, false, true The output is: dark false true 🧠 How this works JavaScript's prototype chain has an asymmetry that trips up even experienced developers: reading a property walks up th