let myMap = new Map().set('a', 1).set('b', 2); ... ... <看更多>

javascript javascript array functional programming. 使用 Array.map 、 Object.values 和 Object.keys 處理「物件中有物件」和「陣列中有物件」的 ... ... <看更多>

Prior to ES6, when you need to map keys to values, you often use an object, ... that contains an array of [key, value] for each element in the map object. ... <看更多>

let obj = Array.from(map).reduce((obj, [key, value]) => { obj[key] = value; ... https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/ ... ... <看更多>

... <看更多>