<!DOCTYPE html>
<html>
<body>
<h2>JavaScript 非同期 / 待機</h2>
<h1 id="demo"></h1>
<script>
async function myDisplay() {
let myPromise = new Promise(function(resolve) {
resolve("I love You !!");
});
document.getElementById("demo").innerHTML = await myPromise;
}
myDisplay();
</script>
</body>
</html>
