主页
JavaScript
JavaScript ECMAScript 2017
tryjs_async4
运行 ❯
×
更改方向
保存代码
更改主题
<!DOCTYPE html> <html> <body> <h1>JavaScript async / await</h1> <h2 id="demo"></h2> <p>Wait 3 seconds (3000 milliseconds) for this page to change.</p> <script> async function myDisplay() { let myPromise = new Promise(function(resolve) { setTimeout(function() {resolve("I love You !!");}, 3000); }); document.getElementById("demo").innerHTML = await myPromise; } myDisplay(); </script> </body> </html>