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Q3.) function makeUser() { return { name: "John", ref: this }; }

let user = makeUser();

alert( user.ref.name )

output will not be an error. It will return an empty string. As window object has a name property and its value is an empty string

let user={ name:'john', ref:this } console.log(user.name)->john console.log(user.ref)->window object console.log(user.ref.name)->empty string