AI 编程工具xxxxxxxxxx<html><head><meta charset="utf-8"><title>高手教程(study.p2hp.com)</title></head><body><h1>Array keys()</h1><p>从数组中创建一个可迭代的对象，该对象包含数组的键。</p><p id="demo1"></p><p id="demo2"></p><p id="demo3"></p><p><strong>注意:</strong> IE11 及其更早的浏览器版本不支持 keys 方法。</p><script>var fruits = ["Banana", "Orange", "Apple", "Mango"];var x = fruits.keys();document.getElementById("demo1").innerHTML = x.next().value;document.getElementById("demo2").innerHTML = x.next().value;document.getElementById("demo3").innerHTML = x.next().value;</script></body></html>