將數組轉換為對象

有時候，出於某種目的，需要將數組轉化成對象，一個簡單快速的方法是就使用展開運算符號(...):

var fruits = [“banana”, “apple”, “orange”, “watermelon”];
var fruitsObj = { …fruits };
console.log(fruitsObj); // returns {0: “banana”, 1: “apple”, 2: “orange”, 3: “watermelon”, 4: “apple”, 5: “orange”, 6: “grape”, 7: “apple”}