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<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Promise 对象</h1>
<h2>Promise.all() 方法</h2>
<p id="demo"></p>
<script>
// 创建一个 Promise
const myPromise1 = new Promise((resolve, reject) => {
  setTimeout(resolve, 200, "国王");
});
// 创建另一个 Promise
const myPromise2 = new Promise((resolve, reject) => {
  setTimeout(resolve, 100, "王后");
});
// 两个 Promise 都完成。谁更快?
Promise.all([myPromise1, myPromise2]).then((x) => {
  myDisplay(x);
});
// 当 Promise 完成时运行的函数:
function myDisplay(some) {
  document.getElementById("demo").innerHTML = some;
}
</script>
</body>
</html>