输出什么?
javascript
const myPromise = Promise.resolve("Woah some cool data");
(async () => {
try {
console.log(await myPromise);
} catch {
throw new Error(`Oops didn't work`);
} finally {
console.log("Oh finally!");
}
})();A. Woah some cool data B. Oh finally! C. Woah some cool data Oh finally! D. Oops didn't work Oh finally!
答案: C
解析:
在 try 块区,我们打印 myPromise 变量的 awaited 值: "Woah some cool data"。因为try 块区没有错误抛出,catch 块区的代码并不执行。finally 块区的代码 总是 执行,"Oh finally!" 被输出。