nodejs 模拟异步执行，模拟线程暂停

 1 /* 模拟线程暂停 */
 2 const sleep = function (time) {
 3     var promise = new Promise((resolve, reject) => {
 4         setTimeout(() => {
 5             resolve();
 6         }, time);
 7     });
 8     return promise;
 9 }
10 
11 async function asyncTest() {
12     let i = 0;
13     while (i < 10) {
14         var date = new Date().toString(‘yyyy-MM-dd HH:mm:ss‘);
15         console.log(`time: ${date} i=${i}`);
16         i++;
17         await sleep(1000);   //暂停1秒
18     }
19 }
20 console.log(‘==开始执行异步函数==‘);
21 asyncTest();
22 console.log(‘==我是异步函数后面的内容==‘);