javascript 使用解构分配从数组中分配变量

Posted 2021-05-03

// array declaration
let arr = [1, 2, 3, 4, 5, 6];

// destructuring an array
const [a, b] = arr;
console.log(a, b);  // 1, 2

// access value at any index by using commas
const [, , c] = arr;
console.log(c);   // 3