javascript 调用异步静态函数时出现 SyntaxError
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SyntaxError when calling an async static function
提问by NorTicUs
I'm playing a bit with async/await of Node 8.3.0 and I have some issue with static function.
我正在使用 Node 8.3.0 的 async/await，但我在使用静态函数时遇到了一些问题。
MyClass.js
MyClass.js
class MyClass {
static async getSmthg() {
return true;
}
}
module.exports = MyClass
index.js
索引.js
try {
const result = await MyClass.getSmthg();
} catch(e) {}
With this code I've got an SyntaxError: Unexpected tokenon MyClass.
Why is that? Can't use a static function with awaitor have I made a mistake?
有了这个代码，我有一个SyntaxError: Unexpected token上MyClass。这是为什么？不能使用静态函数await还是我犯了错误？
Thank you
谢谢
采纳答案by Endless
The await operator can only be used inside an async function.
await 运算符只能在异步函数中使用。
(async () => {
try {
const result = await MyClass.getSmthg();
} catch(e) {}
})()
回答by Salketer
You cannot use await in the main script... Try this
您不能在主脚本中使用等待...试试这个
async function test(){
try {
const result = await MyClass.getSmthg();
return result;
} catch(e) {}
}
test().then(function(res){console.log(res)})
awaitcan only be used in an asyncfunction, and asyncfunction will return a promiseif not called with await.
await只能在async函数中使用，如果没有用 调用，async函数将返回一个。promiseawait
