JavaScript 箭头函数中右侧的圆括号的作用 => ()

代码

const arr = [
    {id: "123", name: "zhangsan"},
    {id: "456", name: "lisi"},
];

arr.map(element => ({
    myId: element.id,
    myName: element.name
}))

说明

这里的=> ()作用等同于=> { return {} }

arr.map(element => {
    return {
        myId: element.id,
        myName: element.name
    }
})