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@conanak99

conanak99/addRemoveField.js Secret

Created Jan 13, 2016
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var person = {
firstName: 'Hoang',
lastName: 'Pham',
showName: function() {
console.log(this.firstName + ' ' + this.lastName);
}
};
delete person.lastName; // Xóa trường lastName
person.lName = 'Just adding'; // Thêm trường lName
console.log(person.lastName); // undefined
console.log(person.lName); // Just adding
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