js对象之增删改查

//创建属性
const person={
	name:'cyg',
	age:66,
	hobbies:['cyg1','cyg2'],
	greeting()
	{
		console.log(this.name);
	}
};

//查询属性
console.log(person['name']);
console.log(person.name);
//添加属性
person.sex='male';

//删除属性
delete person.age;
person.greeting();
console.log(person);