reverence vs value

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"use strict"; const student = { name : 'Asep', age : 23, }; const employee = { title: 'QA', student}; employee.name = 'Lana'; const arr = ['Asep','Lana', 'Dadang']; const names = [...arr]; names[2] = 'goday'; // eval("var z = 5"); // console.log(z); // let x =3; // delete x; // console.log(x); // delete student.age const naruto = { username : 'Na', age : 24 }; const sasuke = { ...naruto }; sasuke.username = 'sa'; const boys = { name: 'Asep', age: 23, }; const girls = { nama: 'Supi', umur: 18, } const childs = { boys, girls }; console.log(childs);
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