전개구문 Spread syntax : 배열
전개구문 Spread syntax : 배열 let arr1 =[1,2,3]; let arr2 =[4,5,6]; let result =[...arr1, ...arr2]; console.log(result); 전개구문 : 객체 let user ={name: 'Mike'} let mike={...user, age:30} console.log(mike) //{name:"Mike", age:30} 전개구문 : 복제 let arr=[1,2,3]; let arr2=[...arr]; //[1,2,3] let user ={name : 'mike', age:30}; let user2={...user}; user2.name="tom"; console.log(user.name); //"mike" console.log(user..
2022. 2. 24.