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const fruits = ["Banana", "Orange", "Apple", "Mango"];
// 建立條目
const list = fruits.entries();
// 列出條目
let text = "";
for (let x of list) {
console.log(x)
}
//(2) [0, 'Banana']
//(2) [1, 'Orange']
//(2) [2, 'Apple']
//(2) [3, 'Mango']
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