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June 26, 2021 23:15
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const employee = { | |
name: 'Siddharth', | |
age: 30, | |
salary: { | |
annual: '100K', | |
hourly: '$50' | |
} | |
}; | |
const copyOfEmployee = {...employee, salary: { ...employee.salary }}; // => DEEP COPY | |
console.log('employee => ', employee); | |
console.log('copyOfEmployee => ', copyOfEmployee); | |
/* | |
employee => { | |
name: 'Siddharth', | |
age: 35, | |
salary: { annual: '100K', hourly: '$50' } | |
} | |
copyOfEmployee => { | |
name: 'Siddharth', | |
age: 35, | |
salary: { annual: '100K', hourly: '$50' } | |
} | |
*/ | |
console.log('------------After Modification-----------'); | |
copyOfEmployee.name = 'Elon Musk'; | |
copyOfEmployee.salary.annual = '120K'; | |
console.log('employee => ', employee); | |
console.log('copyOfEmployee => ', copyOfEmployee); | |
/* | |
------------After Modification----------- | |
employee => { | |
name: 'Siddharth', | |
age: 30, | |
salary: { annual: '100K', hourly: '$50' } | |
} | |
copyOfEmployee => { | |
name: 'Elon Musk', | |
age: 30, | |
salary: { annual: '120K', hourly: '$50' } | |
} | |
*/ |
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