function addNumber(...numbers) {
return numbers.reduce((sum, item) => {
return sum + item;
}, 0)
}
console.log(addNumber(1, 2, 3, 4, 5));
對象解析
let expense = {
type: "es6",
amount: "45"
};
let a = expense.type;
let b = expense.amount;
console.log(a, b);
const { type, amount } = expense;
console.log(type);
console.log(amount);
標(biāo)準(zhǔn)配置
let expense = {
type: "es6",
amount: "45"
};
let a = expense.type;
let b = expense.amount;
function fileSammary(obj) {
return `${obj.type}+${obj.amount}`;
}
console.log(fileSammary(expense)); //結(jié)果就是es6+45
數(shù)組解構(gòu)
let arr = [1, 2, 3, 4, 5, 6];
const a = [...arr];
console.log(a);
