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Showing content from https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/entries below:

TypedArray.prototype.entries() - JavaScript | MDN

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entries() 返回新的 Array Iterator 对象，包含数组每个下标处的键值对。

新的 Array Iterator 对象。

var arr = new Uint8Array([10, 20, 30, 40, 50]);
var eArray = arr.entries();
// 你的浏览器必须支持 for..of 循环
// 以及 for 循环中的 let 区域变量
for (let n of eArray) {
  console.log(n);
}

var arr = new Uint8Array([10, 20, 30, 40, 50]);
var eArr = arr.entries();
console.log(eArr.next().value); // [0, 10]
console.log(eArr.next().value); // [1, 20]
console.log(eArr.next().value); // [2, 30]
console.log(eArr.next().value); // [3, 40]
console.log(eArr.next().value); // [4, 50]

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